Built-up Roofing System (BUR) Explained

Don’t invest your resources in an inadequate roofing system for your commercial property. Uncovering the benefits and properties of a built-up roofing system can help you make informed decisions when installing a new roof or replacing your existing roofing system.

atlantacommercialroofingcontractors.com gathered the most helpful information about built-up roofing, its installation process, warranty, associated costs, frequently asked questions, and potential problems with built-up roofing systems.

Built-up Roofing – Production Process & Properties

Built-up roofing systems, referred to as BUR, have been in use in the U.S. for over a century. This roofing system is also known as a “tar and gravel” roof. BUR systems are typically composed of alternating layers of bitumen and reinforcing materials that create a membrane.

This roofing system gains its waterproofing and durability from its layered structure, consisting of a “built-up” or layered combination of components, including:

1. Substrate or Decking
2. Roof Insulation
3. Roofing Asphalt
4. Venting Base Sheet (Cover Board) with Roofing Asphalt
5. Ply Sheet with Roofing Asphalt
6. Slag or Gravel in Asphalt or a Modified Bitumen Cap

Note: When a modified bitumen membrane is used to cap a BUR system, this combination is referred to as a “hybrid” system.

Roofing asphalt (bitumen) commonly used in BUR systems includes:

Asphalt – Asphalt (a petroleum product refined from crude oil) requires heating before application with a mop or spreader

Coal Tar – Coal tar (derived from the distillation of coal) also requires heating before application with a mop or spreader

Cold-Applied Adhesives – These adhesives are solvent-based asphalts that don’t require heating prior to application

Surfacings used on BUR systems may be (or a combination of):

Aggregate – Gravel, slag, crushed stone, and/or mineral granules are common aggregates

Cap Sheets – Commonly made with glass-fiber or mineral surfacing

Asphalt – Hot Asphalt spread or mopped over the entire surface

Alternative Coatings – Aluminum and elastomeric coatings are commonly applied as surfacing for BUR systems

Benefits of Built-up Roofing

In use for over a century in the U.S., properly installed BUR systems provide the following benefits:

• Well-installed, a BUR system can last more than 30 years
• Provides excellent waterproofing protection
• Creates a continuous sealed surface
• Seams are very well sealed (in some cases, many times over)
• Provides exceptional UV protection
• Once installed, the system is extremely low-maintenance
• Excellent impact resistance
• Excellent fire resistance

Along with these benefits is traction. Often overlooked, if your roof has foot traffic, a BUR system may be ideal due to gravel providing an excellent grip. This becomes evident during severe weather.

Built-up Roofing Installation and Warranty

The installation of your built-up roofing system, when properly installed, is a moderately fast and non-intrusive process.

A built-up roofing system can be installed using hot asphalt or cold adhesives. A standard built-up roof system is a multiple layered system applied in such a way that creates a seamless roof. The following can influence the end result of the roofing system’s installation:

• Proper roof slope for efficient draining
• Correct installation and fastening of insulation
• Correct application of cold adhesives when used in place of hot asphalt
• Proper placement and overlapping of material
• Drip edge seamlessly connected around the perimeter of the roof

In addition to high-quality installation, a warranty is valuable when the installation or components of your roof fail. There are two types of warranties to consider when installing or replacing this or any other roofing system:

Contractor’s Warranty – This warranty covers the workmanship and installation of your roofing system by the contractor. The contractor guarantees their work for a set period (3, 5, 10-year period, etc.), or for the lifetime of the roofing system. A contractor’s warranty should include the following:

• A list of all covered items
• Actions or events that may void the warranty
• When/If the warranty expires

The above installation and warranty information underscore the absolute necessity to thoroughly vet contractors before starting a roofing installation or replacement.

Note: There is no established industry standard for the duration of a contractor’s workmanship warranty.

Manufacturer’s Warranty – This warranty covers defects in the roofing material used in your roofing system. Once installed, your contractor should provide you with manufacturer’s warranty certificates.

An example of material failure would be premature alligatoring (small cracks in the roofing surface from shrinkage). Unless it is determined to result from poor or improper installation, a claim can be leveraged against the manufacturer’s warranty.

Built-up Roofing Cost

Collecting estimates for a roofing system can be a tedious experience. There is often a significant disparity from one quote to the next, which reinforces the necessity to collect at least three bids from three reputable roofing contractors.

Prices for installing a built-up roof system may vary with the size/complexity of the roof, time of year, material brand and quality, method of installation, and the amount of labor required taken into consideration. You can expect to see pricing in the following ranges:

Tear-off – Unless your new roof is installed over your current roof, the old one will be removed.

This process can range between $100 and $200 per square (1 square = 100 square feet).

Tip: If this cost gets bundled in material and installation pricing. Request that it be detailed separately in your estimate(s).

BUR Material – will fall between $100 and $175 per square

BUR Installation (Labor) – can range from $300 to $525 per square

Maintenance Contract – Commercial roofing maintenance program prices vary from contractor to contractor

Using the price ranges above, you can expect to see bids, including tear-off, material, and installation for a 1,000 square foot roof between $5,000 and $9,000.

Consumer Tip: In the roofing industry, installations are typically more expensive in late spring and summer months. If possible, schedule your installation for the off-season (early spring and fall).

Disclaimer: The above pricing is in no way intended to represent actual bid values and only serves as an estimated market price range.

Built-up Roofing Problems

With new materials, installation methods, and technology, BUR systems are becoming less popular. That said, a built-up roofing system may still be the best option for your commercial building. Before making any decision, consider the following potential problems sometimes associated with a BUR system:

• High wind may cause rocks or gravel to be blown off the roof (potentially damaging nearby structures or persons)
• While leaks are easily repaired, finding them may be a laborious and costly process
• This roofing system is heavy in comparison to others. Your commercial roof load should be verified before installing a BUR system
• BUR installation is slower than that of other less complex roofing systems. Increased labor costs can make BUR systems more expensive

You must do your research to see if the pros outweigh the cons of this or any other roofing system. You can check out and compare the alternative options to a built-up roof system to find something better suited for your property’s needs.

People Also Ask

Can built-up roofs be repaired?

Yes. BUR roofing systems are easily and reliably repaired.

How long do built-up roofs last?

A well-installed and maintained built-up roofing system can exceed a 30-year lifespan.

Can built-up roofs handle foot traffic?

Yes. Due to the gravel or slag used in the roof’s finishing, BUR systems are slip-resistant, even in severe weather.

Built-up Roofing Information Revealed

In this article, you discovered essential information on the definition, installation, cost, warranty, and potential problems with built-up roofing systems.

Knowing how BUR systems are installed and maintained will help you make informed decisions on a roofing system for your commercial property.

Allowing yourself to be duped into an inadequate roofing system by an unprofessional roofing company can have very costly repercussions when the roof fails.

Sources:
asphaltroofing.org/bur-multi-ply-built-up-roofing/
everybodyneedsaroof.com/built-up-roof-BUR-membranes
homeadvisor.com/cost/roofing/flat-roof/
porch.com/project-cost/cost-to-install-built-up-roofing

The post Built-up Roofing System (BUR) Explained appeared first on atlantacommercialroofingcontractors.com

Modified Bitumen Roofing System Explained

Avoid spending resources on the wrong roofing system for your commercial property, and learn the benefits and properties of a modified bitumen roof. By knowing its advantages and how modified bitumen roofing systems protect your property or commercial building, you can make informed decisions when replacing your existing roofing system.

atlantacommercialroofingcontractors.com gathered the most helpful information about the modified bitumen product, its installation process, the warranty, material cost, frequently asked questions, and the potential problems with modified bitumen roofing systems.

Modified Bitumen – Production Process & Properties

Modified Bitumen (MB) roofing is an asphalt-based roofing system similar to Built-up-Roofing (BUR), designed for structures with low-slope roofs. Modified bitumen roofing membranes appeared first in Europe in the mid-’60s and since have been used in the US and Canada since the mid-’70s.

This roofing system gains its durability from its structure, consisting of a five-layer combination of components, including:

• Insulation – Provides thermal resistance and temperature stability.
• MB Membranes – These membranes are composed of copolymer with polyester or fiberglass reinforcement.
• Modified-Base sheets – These are modified fiberglass base sheets coated with MB asphalt.
• Adhesive – Combined with a bonding agent, this waterproofing material is applied hot or cold.
• Surface – The surface to an MB roofing system increases weather-resistance and shields the roof from ultraviolet rays.

Note: While EPDM roofing material is made from recycled rubber (tires), modified bitumen is made from asphalt and modifying polymer blends.

There are two principal types of MB roofing, including:

APP (Atactic Polypropylene Bitumen) – The use of a thermoplastic polymer gives the asphalt a plastic-like quality. APP modified bitumen increases UV light protection and has greater water resistance.

When APP is torch-applied, the plastic starts melting at 300°F and can be mopped across the roof’s surface, making it easier for roofers to apply.

SBS (Styrene-Butadiene Styrene) – The addition of styrene-butadiene styrene to bitumen gives it a synthetic rubber modification. When heated, SBS becomes sticky and fundamentally different, lacking the liquid flow of heated APP. Since SBS doesn’t melt the way APP does, it requires less heat, which makes it faster to install.

SBS systems can also be installed using cold adhesives, making it suitable for construction or roofing projects where open flames are prohibited.

Benefits of Modified Bitumen Roofing

Some benefits of a modified bitumen roof include:

• Tear-Resistant – The principal advantage that MB roofing has over other commercial roofing systems is its tear resistance. This is due to the combination of fiberglass and/or polyester reinforcement layers under its surface. This trait makes modified bitumen roofing an ideal choice for low-slope roofing with high foot traffic or rooftop equipment.

• Flexible – Flexible low-slope roofing is impact resistant and highly resistant to significant temperature shifts. MB can expand and contract without deforming or losing its structure.

• Energy-Efficient – MB can be installed with a “cool roof” treatment like solar reflectance, resulting in reduced indoor cooling requirements.

• Waterproof – Bitumen is naturally waterproof, and on a well-installed roof, MB is one of the most preferred commercial roofing choices.

• Repair And Maintenance – Repair on an MB roofing system can be done quickly and efficiently using bitumen patches. Low-slope roofing failures usually occur on seals and flashing. However, with proper installation and a roofing maintenance program, such issues should be minimized.


Modified Bitumen Roofing Installation and Warranty

The installation of your modified bitumen roofing system, when properly installed, is a fast, non-intrusive process.

A modified bitumen roofing system can be installed using the torch method, asphalts, or cold adhesives. A standard SBS modified bitumen roof system is a two-ply system applied in rolls overlapping the edge of the previous roll. The following can influence the end result of the roofing system’s installation:

• Proper roof slope for efficient draining
• Correct installation and fastening of insulation (when used) to deter bulging and/or sagging
• Correct application of adhesives (when used) to the substrate
• Proper overlapping of MB material
• Drip edge seamlessly connected around the perimeter of the roof

In addition to high-quality installation, a warranty is advantageous and very valuable when the installation or components of your roof fail. There are two types of warranties you should consider when installing or replacing this or any roofing system:

Contractor’s Warranty – This warranty covers the workmanship and installation of your roofing system by the contractor. The contractor can guarantee their work for a set time period (3, 5, 10-year period, etc.), or for the lifetime of the roofing system. A contractor’s warranty should contain the following:

• A complete list of covered items
• What actions or events may void the warranty
• When/If the warranty expires

The above installation and warranty information underscore the necessity to thoroughly vet contractors before starting roofing installation/replacement.

Note: There is no industry standard for the duration of a contractor’s workmanship warranty.

Manufacturer’s Warranty – This warranty covers defects in the material used in your roofing system. Once installed, your contractor should provide you with a warranty certificate(s).

An example of material failure would be premature seam failure or blistering. Unless it is determined to result from poor or improper installation, a claim should be leveraged against the manufacturer’s warranty.

Modified Bitumen Roofing Cost

Collecting estimates for any roofing system can be a daunting experience. There can often be a significant disparity from one quote to the next, which validates the absolute necessity to collect at least three bids from reputable roofing contractors.

Prices for installing a modified bitumen roof system vary depending on the size/complexity of the roof, time of year, material brand and quality, method of installation, and the amount of labor required. You can expect to see pricing in the following ranges:

Tear-off – Unless your new roof is installed over your current roof, the old one will be removed.

This process can range between $100 and $200 per square (1 square = 100 square feet).

Tip: If this cost ends up bundled in material and installation pricing. Request that it be detailed separately in your estimate(s).

Modified Bitumen Material – will fall between $150 and $300 per square

Modified Bitumen Installation (Labor) – can range from $220 to $350 per square

Maintenance Contract – Commercial roofing maintenance program prices vary from contractor to contractor

Using the price ranges above, you can expect to see bids, including tear-off, material, and installation for a 1,000 square foot roof between $4,700 and $8,500.

Tip: In the roofing industry, installations are typically more expensive in late spring and summer months. Try to schedule your installation for the off-peak season (early spring and fall) if/when possible.

Disclaimer: The above prices are in no way meant to represent actual bid values and only serve as estimated market price ranges.

Modified Bitumen Roofing Problems

Most problems occurring with modified bitumen roofing systems can be traced back to the roof’s installation. The following are commonly reported issues:

• Improper roof slope causing water pooling and degradation of materials
• Seam separation/defects from improper application of adhesives
• Insulation improperly fastened or installed
• Blisters that develop when moisture penetrates the material
• Incorrectly installed flashing
• Membrane tears/punctures from wind-driven debris

You can avoid problems caused by a poor installation by contracting a roofing company with extensive training and experience with modified bitumen roofing systems.

Tip: Always request references from roofing contractors and followup with those references.

People Also Ask

Can you walk on a modified bitumen roofing system?

Yes. Well-installed MB roofing is designed to withstand foot traffic. For areas that support building equipment or heavier foot traffic, the roof can be appropriately reinforced.

How long do modified bitumen roofs last?

Up to 20 years. The life of your roofing system is significantly influenced by the quality of its installation and maintenance program.

Can modified bitumen roofs be repaired?

Yes. When modified bitumen roofs are damaged, there are several ways they can be efficiently repaired.

Modified Bitumen Information Revealed

In this article, you discovered information on the definition, installation, cost, warranty, and potential issues with modified bitumen roofing systems.

By knowing how modified bitumen roofing systems are made, installed, and maintained, you can make informed decisions about having it installed on your building.

When you allow yourself to rely solely on what one roofing contractor says or presents, you are leaving yourself vulnerable to costly repairs after having inferior quality materials poorly installed on your building.

Sources:
asphaltroofing.org/cold-adhesive-sbs-modified-bitumen-roofing-applications/
remodelingexpense.com/costs/cost-of-modified-bitumen-roof/
homeadvisor.com/cost/roofing/flat-roof/
citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.4.1966&rep=rep1&type=pdf

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EPDM Roofing System Explained

Avoid spending your resources on the wrong roofing systems for your flat roof or commercial property. By knowing how EPDM roofing systems can protect your commercial building, you can make informed decisions when installing or replacing your roof.

atlantacommercialroofingcontractors.com gathered information about the definition, installation, warranty, cost, and potential problems with EPDM roofing systems while answering frequently asked questions.

EPDM Roofing Explained – Production, Properties, and Benefits

EPDM (Ethylene Propylene Diene PolyMethylene) is a durable synthetic rubber roofing membrane composed of two primary ingredients, ethylene and propylene, derived from oil and natural gas.

The following will explain the composition, properties, and production of EPDM roofing systems for commercial and residential structures, including its use in the auto industry:

• EPDM roofing material is classified as a single-ply membrane. However, most are comprised of two plies of material to produce one ply. This is done to prevent imperfections from occurring throughout the sheet.
• There are two methods used to produce EPDM roofing material; calendaring or through a roller die extruder.
• Sheet thickness is 45 mils, 60 mils, and 90 mils, which equates to about the thickness of a heavy-duty trash bag.
• EPDM panels can be produced as narrow as 5 feet and as wide as 50 feet, while sheet length can reach 200 feet. This provides maximum coverage with minimal seams.
• EPDM membranes are usually installed using deck adhesive, making them fully adhered (glued down) to the substrate. They can also be installed using a ballasted system or be mechanically attached to the substrate.
• Overlapping EPDM seams can be sealed by applying adhesives, seam tape, or both.
• EPDM membranes come in two primary colors, including black and white.
• EPDM membranes are resistant to oil and chemicals expelled by commercial exhaust vents.
• EPDM roofing material is naturally fire-resistant and is highly UV resistant.
• EPDM roofing systems are highly resistant to wind uplift.
• The life expectancy of EPDM roofing systems is between 22 and 35 years
• The EPA recognizes that ballasted EPDM roofing systems can be a very effective means of lowering rooftop surface temperatures, reducing air conditioning requirements within the structure.

Play this video to see the manufacturing process of EPDM membranes.

While popular in the roofing industry, the principal application of EPDM is within the automotive industry. It is used to manufacture components like weatherstripping, coolant hoses, brake components, and motor oil.

EPDM Roofing Installation and Warranty

The installation of your EPDM roofing system, when properly installed, is a fast and non-intrusive process.

Installing an EPDM membrane is accomplished by fully adhering it (gluing down), and/or mechanically attached or ballasted; the following factors influence the quality of the roofing system’s installation:

• Low roof slope for efficient draining
• Correct installation and fastening of insulation (when used) to deter bulging and sagging
• Correct application of adhesives to the substrate
• Proper use of seam adhesive
• Drip edge seamlessly connected around the perimeter of the roof

In addition to quality installation, a warranty is advantageous and very valuable when the installation or components of your roof may fail. There are two types of warranties to consider when installing or replacing any roofing system:

Contractor’s Warranty – This warranty covers workmanship and installation of your roofing system by the contractor. The company is guaranteeing its work for the roof’s lifetime.

A contractor’s warranty should contain the following:

• A list of covered items
• What can void the warranty
• When/If the warranty expires

The above installation and warranty information underscore the necessity to thoroughly vet contractors.

Note: There is no industry standard regulating the duration of a contractor’s warranty.

Manufacturer’s Warranty – This warranty covers defects in the material used in your roofing system. Once installed, your contractor should provide you with a warranty certificate(s).

An example of material failure would be premature shrinkage. Unless it is determined to result from poor or improper installation, a claim should be leveraged against the manufacturer’s warranty.

EPDM Roofing Cost

Collecting estimates for any roofing system can be an overwhelming experience. There is often a significant disparity from one quote to the next, which validates the need to collect at least three bids from reputable roofing contractors.

Prices for installing an EPDM roof system vary depending on the size/complexity of the roof, time of year, material brand, material quality, method of installation, and the amount of labor involved. Expect to see pricing in the following ranges:

Tear-off – Unless your new roof is installed over your current roof, the old one will be removed. This process can cost between $100 and $200 per square (1 square = 100 square feet).

Suppose this cost is bundled in material and installation pricing. In that case, you can request that it be detailed separately in your estimate(s).

EPDM Material – will fall between $75 and $450 per square

EPDM Installation (Labor) – can range from $350 to $750 per square

Maintenance Contract – These commercial roofing maintenance programs prices vary from contractor to contractor

Using the price ranges above, you can expect to see bids, including tear-off, material, and installation for a 1,000 square foot roof between $5,250 and $14,000.

Tip: In the roofing industry, installations are generally more expensive in the spring and summer months. Schedule your installation for the off-peak season (early spring and fall) if/when possible.

Disclaimer: The above prices are in no way meant to represent actual bid values and only serve as estimated market price ranges.

EPDM Roofing Problems

Most problems occurring with EPDM roofing systems can be traced back to the roof’s installation. The following are commonly reported issues:

• Improper roof slope causing water pooling and degradation of materials
• Seam separation from improper application of adhesives
• Insulation improperly fastened or installed
• Incorrectly installed flashing
• Membrane tears from wind-driven debris

You can avoid problems caused by poor installation by contracting a roofing company with extensive training and experience with EPDM roofing systems.

Tip: Always request references from roofing contractors and followup with those references.

People Also Ask

Can you walk on an EPDM roofing system?

Yes. EPDM is designed to withstand light foot traffic. If you have areas on your roof with heavy foot traffic, have those areas reinforced to avoid rupturing your membrane.

Does EPDM need to be glued down?

Yes. EPDM membranes are fully adhered or “glued down.”

Which is better, EPDM or TPO?

Depends on the intended use and functionality of the property. Both systems have similar qualities. However, TPO is slightly more puncture resistant and can have a more comprehensive warranty.

Does EPDM shrink?

Yes. Despite its durability and reliability, over time, EPDM naturally shrinks.

How good is EPDM roofing?

EPDM roofing materials are extremely durable, resists mold, damages, and is easily repaired. With larger panels and fewer seams, it is very rare for an EPDM roof to leak prematurely.

EPDM Information Revealed

In this article, you discovered essential information about the definition, installation, cost, warranty, and issues with EPDM roofing systems.

By knowing how EPDM roofing systems are produced, installed, and maintained, you can make informed decisions about having it installed on your building.

When you rely solely on what a roofing contractor says or presents, you are leaving yourself vulnerable to costly repairs after having inferior quality materials poorly installed on your building.

Sources:
epdmroofs.org/what-is-epdm/why-epdm/
homeadvisor.com/cost/roofing/rubber-membrane/
tporoofing.org/comparative-guide-to-tpo-vs-epdm-roofing/
energystar.gov/products/building_products/roof_products/other_types_roofing_that_can_save_energy

The post EPDM Roofing System Explained appeared first on atlantacommercialroofingcontractors.com

Commercial Roof Replacement

Avoid unexpected, expensive surprises when you replace your worn out commercial roof. By knowing the variable costs in a commercial roofing system replacement, you can ask the right questions to get a more accurate idea of the project cost.

atlantacommercialroofingcontractors.com gathered information about commercial roof replacement, what aspects of the project are variable in cost, what you can expect to spend on a new roofing system, and some of the available commercial roofing types.

Commercial Roofing System Replacement

The replacement of a commercial roofing system is a rare event for building owners and managers. When a roof is installed and maintained correctly, it can last for decades before needing replacement.

The following information will help you reach an informed decision about how to project roof replacement cost variables, and which type of roofing system to install:

Commercial Roof Accessibility

When replacing your commercial roof, access to your property and the roof can impact project costs as much as the roof type. Consider the following:

Commercial Building Height – Roof replacement for a 2-story commercial building will be much less costly than a 10-story commercial building. This is due, in part, to the need for cranes to remove old roofing material and lift new material to the work area.

Access to Building Property – Property access also has an impact on the project. The ability to freely move equipment to the property near the building will influence the logistics and project cost.

Material Storage Areas – Material storage is also a determining factor. Large “lay down” areas near the building facilitate the logistics of the roofing project and can lower its cost.

Building Occupant Safety – Building occupancy can pose a series of challenges to the roofing project. The safety and productivity of the building’s occupants must be considered at all times. If this requires roof replacement activities to occur after regular business hours, additional costs will likely be added to the project.

The easier it is to access your roof, execute the removal of the old roof, and install the new commercial roofing system, the less costly the project will be.

Commercial Roof Substrate Condition

Roof replacement costs can be heavily influenced by the condition of the substrate material. A commercial roof substrate may be composed of:

• A concrete, wood, or metal deck
• Plywood or cover board
• Insulation

Damages to the substrate must be repaired before roof replacement. This cost is a variable, as even the most experienced roofers with the best detection technology may not identify substrate damages until the old roofing materials are removed.

Local, Regional, and State Commercial Roofing Code Requirements

The location of your commercial building may make your roofing system subject to code requirements, including more robust fasteners at more frequent intervals, insulation, substrate, ventilation, and/or slope requirements.

An example of this would be commercial structures along the coast of Florida. Codes in these areas require commercial roofing systems to be designed to withstand higher wind loads. For these roofing systems, more durable fasteners at closer intervals would be required, increasing the cost of the roof replacement project.

Commercial Roof Load-Bearing Capacity

Another crucial factor in determining the cost of replacing your commercial roofing system is the calculation of its dead, live, and transient load capacity.

Calculating your roof load capacity is one of, if not the most crucial aspect when determining the construct of the roof’s substrate and selection of a roofing system. Your roof must be able to support its projected dead load (HVAC units, ducts, vents, exhaust units, etc.), live load (installers, repairmen, and technicians), and transient load (rain, wind, and snow).

Read more about commercial roof loads at atlantacommercialroofingcontractors.com/what-is-commercial-roof-load-why-you-need-to-know/

Commercial Roofing Types

No two roofs are the same. Thus, there are several commercial roofing systems to choose from. The following are some of the more popular commercial roofing types, installation information, and typical price range:

TPO, PVC, and EPDM Single-Ply Membrane Systems Can Cost from $3.50 to $8 per square foot

TPO, PVC, and EPDM are all known as single-ply roofing systems, they require fewer installation steps and are installed with a straightforward process:

• The old roofing system is removed
• The substrate is cleared of anything that may damage the selected membrane
• The membrane is rolled out onto the roof
• The membrane is then adhered to the roof using tape, glue, or heat (for thermoplastic material)
• The membrane is also adhered to itself where its edges overlap
• Protrusions are sealed

The time it takes to install a membrane, or single-ply roofing system also depends on the width of the membrane. The wider it is, the fewer seams there are to seal in the roofing system, which also leaves fewer opportunities for leaks and eventual substrate damage.

A BUR/Asphalt System Can Cost from $5 to $9 per square foot

Built-up roofing systems are among the oldest in modern times. BUR systems are durable and effective at resisting leaks while repelling water. The installation process occurs in the following steps:

• The old roofing system is removed
• Base sheets are laid down and attached to the roofing deck
• Felt is then glued to the base sheets using an adhesive, concrete, asphalt, or tar
• Gravel or cap sheets are installed over the felt
• A top layer of asphalt completes the installation

A BUR system creates a robust roof, able to keep severe weather and the elements from entering the building it protects.

A Metal Roofing System Can Cost from $5 to $14 per square foot

One of the most long-lived roofing options (forty + years), metal roofing is also one of the more expensive options. The following details how a metal roofing system is installed:

• The existing roof is removed
• The roof deck is built/prepped (framework and insulation installation)
• The flashing and eaves are installed
• Metal panels are laid out and fastened to the roof deck (fastening depends on which material the panels are composed of; aluminum, copper, steel, etc.)

Metal roofing comes in panels or steel shingles. Steel shingles are installed in the same manner as slate, clay, or concrete shingles.

A Modified Bitumen System Can Cost from $4 to $8 per square foot

Modified bitumen is a result of the evolution of asphalt roofing. It is a form of membrane flat roofing. The system is durable and can sustain substantial foot traffic without wear. The following is the installation processes of a “torch-down” modified bitumen roofing system:

• The existing roof is removed
• The substrate is cleared of any debris
• Heavy roofing felt is rolled out and nailed down
• Flashings and primer are installed
• The first sheet is rolled out along the edge of the roof for trimming and fitting
• The sheet is then rolled back up
• A torch is used to slightly melt the bitumen as the first sheet is rolled back out
• Overlapping sheets are then applied in the same manner until the roof is covered and sealed

Before selecting modified bitumen, verify that the existing substrate is compatible. Improper adhesion can lead to leaks and likely failure of the new modified bitumen system.

Disclaimer: The preceding price ranges are for comparative purposes only and should not be considered a part of any bid or quote for roofing installation, repair, or replacement.

Replacing Your Commercial Roofing System

In this article, you discovered information about replacing a commercial roofing system, the variables involved in calculating the cost, and commercial roofing types with their price ranges.

By knowing what to look for in a commercial roofing replacement estimate, you can avoid surprises by asking informed questions about installation variables.

When you choose to rely solely on a contractor’s bid or estimate, you may be in for a surprise when unforeseen damages and difficulties cause your roofing project to go quickly over budget.

Sources:
asphaltroofing.org/bur-multi-ply-built-up-roofing/
roofcalc.org/metal-roofing-prices/
nrc.gov/docs/ML1214/ML12146A122.pdf

The post Commercial Roof Replacement appeared first on atlantacommercialroofingcontractors.com

Commercial Roof Coatings

Prevent your failing commercial roof from shuttering your business, costing you valuable time and money. Commercial roof coatings can extend the life of your current roofing system by twenty years or more,

atlantacommercialroofingcontractors.com gathered information about commercial roof coating purpose, benefits, installation, types, and maintenance for you to make informed decisions when your commercial roof needs attention.

Commercial Roof Coating Purpose

The purpose of commercial roof coatings is to improve the performance of your roof and increase its lifespan.

Commercial roof coatings protect your property by creating a seamless layer of protection that self-adheres to your existing roofing system. The majority of these coatings are reflective and do not absorb UV rays, keeping your roof and property cooler (making your roofing system a “cool roof”), saving energy and money.

Commercial Roof Coating Benefits

As previously mentioned, commercial roof coatings can help you save money by reflecting UV rays. The benefits don’t stop there, consider the following when determining if a roof coating is the right choice for your building:

No Leaks – Commercial roof coatings eliminate leaks from your roofing system. You may rarely wind up with a leak, but they are easy to fix.

Cool Roof – High solar reflectance (albedo) is the most critical characteristic of a cool roof as it reflects sunlight and heat away from a building, reducing roof and internal temperatures. A high thermal emittance also positively contributes to lowering heat-island temperatures in climates that are warm and sunny.

These properties help roofs to absorb less heat and remain up to 50–60°F cooler than conventional materials during the summer months.

Resistant To Ponding – When your roofing system’s drains get partially or entirely interrupted, water will back up and settle in the lowest areas of the roof. Due to the coating’s seamless application, water penetration is prevented until you can correct the problem with the drainage system.

Low-Cost Solution – A commercial roof coating application is an inexpensive alternative to roof replacement that, when properly applied, can significantly extend the life of your roofing system, making its cost-benefit even greater.

• $8,000 to $16,000 is the range you can expect to pay for a 1,600 square foot flat roof installation (materials and labor).
• $1,040 to $8,000 is the range you can expect to pay for a 1,600 square foot roof coating application (materials and labor).

Longevity – Creating a watertight barrier over your original roofing material can extend its lifespan by as much as 20 years.

Versatility – Commercial roof coatings can adhere to a wide range of substrates. Occasionally, a primer is needed for the coating to adhere to the substrate (more on this below).

Easy Installation – When applying a commercial roof coating, contractors will save time and headaches. At the same time, building owners can get their roof revamped faster for less money and without interrupting operations within the building.

While there are impressive benefits associated with nearly every aspect of commercial roof coatings, if your roof has suffered catastrophic damages or has completely failed, it may be necessary to replace it altogether.

Read more about installing a new roof at atlantacommercialroofingcontractors.com/commercial-roof-installation/

Commercial Roof Coating Installation

A roof coating installation is a simple process. As mentioned above, it is one of the benefits. The following will bring into focus just how easy it truly is:

Roof Inspection – A roof inspection is the first step in this process, and the professional performing it will be looking for the following:

• Storm, animal, or impact damages
• Shrinkage (membrane roofing systems)
• Damaged sheet metal (metal roofing systems)
• Damaged flashing
• Loose protrusions
• Drain blockages
• Pooling water
• Previous or current leak damage
• Structural integrity

These inspections are most effective when performed within 48 hours after rainfall.

Roof Repairs – Once your inspection is done, you’ll have a list of damages or irregularities to fix. Before you can apply a roof coating, all problems must be halted and removed. If a roof coating is applied to a roof with wet insulation, loose protrusions, structural problems, etc., those problems will be sealed in and continue to cause problems.

Clean the Roof – Once all repairs are complete, the final activity before installation is to clear the roof of:

• Tools and equipment
• Debris
• Dirt
• Oil/Exhaust buildup

Remove everything that is not a part of the roofing system. Using a power-washer, brooms, and industrial vacuums are effective ways of cleaning your roof before coating application.

Install the Roof Coating – After the roof has been inspected, repaired, and cleaned, your roofer can properly apply your roof coating. Coatings can be applied by rolling them on or spraying them on the roof’s surface. Done correctly, the coating will cure over 24 hours, leaving your roofing system rejuvenated and sturdy for up to 20 years.

Commercial Roof Coating Types

The following are common types of roof coating that can be applied to your existing commercial roofing system:

Acrylic Coatings – Acrylic coatings come in solvent and water-based formulas, and the qualities of the coating depend on the selected formula. Acrylic coatings have outstanding weathering properties and reflect UV rays. The selection of a formula depends on the type of the roof, adhesion, regional temperature fluctuations, etc.

Silicone Coatings – Silicone coatings are commonly applied in regions subject to an abundance of rain, leaving the roof wet for long periods. These coatings are also highly effective at reflecting UV rays, helping commercial structures stay cool.

Butyl Elastomeric Coatings – Butyl elastomeric coatings are made from butyl rubber and possess excellent flex properties, adhesion to multiple substrates, and resistance to most weather and temperature conditions.

Read more about butyl elastomeric coatings at atlantacommercialroofingcontractors.com/butyl-elastomeric-roof-coating-explained/

Polyurethane Coatings – Polyurethane coatings are solvent-based and come in either aromatic or aliphatic variations. Polyurethane coatings have high abrasion resistance traits and are preferred on roofing systems with high foot traffic or regions that experience frequent hailstorms.

Commercial Roof Coating Maintenance

Should you acquire a maintenance program to cover your roof coating and roofing system?

Yes. In the same way you would contract a professional roofing service to maintain your roof without a roof coating, you should acquire an equivalent maintenance program once your roof coating is installed. Some of the benefits include:

• Bi-annual inspections
• Emergency inspections after severe weather
• Light maintenance and repairs
• Preventive maintenance
• Gutter and drain cleaning
• Debris removal

For more in-depth information about maintenance programs and services, read atlantacommercialroofingcontractors.com/maintenance-programs-services/

Commercial Roof Recoating

One of the added benefits to getting a roof coating is that once you near the end of its lifespan, you can have it recoated, adding another 15 to 20 years to the life of your roofing system.

Note: Some municipalities have codes that address commercial roof recoating and may limit the number of times a roof can be coated before requiring repair or replacement. Visit your city’s website and search for “roofing codes” or call their “Office of Buildings/Construction” for more information.

Coating Your Commercial Roof

In this article, you discovered information about the purpose, benefits, installation, types, and maintenance programs associated with commercial roof coatings.

By informing yourself about commercial roof coatings, you can make well-informed decisions when it’s time to address roofing issues, or take action to prevent them.

Allowing your roof to remain fully exposed to the elements can dramatically reduce its lifespan, leading to premature problems and failure. Significant problems or premature replacement can lead to you exceeding your roofing budget and costing your company capital that could be used in other areas.

Sources:
homeadvisor.com/cost/roofing/seal-a-roof/
roofcalc.org/flat-roof-calculator/
henry.com/fileadmin/pdf/current/tds/HE280DC_techdata.pdf
www2.epa.gov/heat-islands/using-cool-roofs-reduce-heat-islands

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Commercial Roof Installation

Don’t let the wrong roofing system or a poorly installed one cripple your business. Knowing what goes into installing or replacing a commercial roof will help you make informed decisions when it is time to act.

atlantacommercialroofingcontractors.com gathered information about commercial roof installation, replacement, and answers some common commercial roofing FAQs.

Commercial Roofing System Installation

Installing a roof on a new commercial building or replacing an old one may seem procedurally simple enough. However, some roofing system installation differences should be addressed.

TPO, PVC, and EPDM Membrane System Installation

Also known as single-ply roofing systems, these systems require fewer steps and are installed with a relatively straightforward process:

1. The roof is cleared of any material that may damage the membrane
2. The membrane is rolled out onto the roof (single-ply roofing material typically comes in rolls)
3. The membrane is then adhered to the roof using tape, glue, or heat (for thermoplastic material)
4. The membrane is also adhered to itself where its edges overlap
5. Protrusions are sealed

The time it takes to install a membrane or single-ply roofing system will also depend on the width of the material. The wider the material is, the fewer seams in the roofing system, which also translates to fewer opportunities for leaks and roof failure.

Elastomeric Coatings and Spray Polyurethane Foam (SPF) System Installation

Both Mesh Reinforced Elastomeric Coatings (MREC) and SPF coatng systems are intended to extend the life (up to 20 years) of an existing roofing system. Their installation includes:

Mesh Reinforced Elastomeric Coatings (MREC) – Composed of acrylic, elastomeric, and polyester reinforcing mats, MREC mats are applied in multiple layers until the desired thickness is reached.

Sprayed Polyurethane Foam (SPF) – SPF coatings may be acrylic, polyurethane, silicone, aggregate, or mineral granules. SPF coatings are sprayed onto a roof and should be applied by skilled workers.

• SPF can be applied directly to the roof deck or existing roofing system
• An SPF membrane is created by spraying a two-part liquid material onto the substrate
• The mixture expands and solidifies creating a waterproof polyurethane foam

Besides the protective nature of SPF coatings, the thickness and slope of the roof can be controlled during application.

BUR/Asphalt System Installation

Built-up roofing systems are among the oldest roofing processes in modern times. BUR systems are durable, they look nice, and are effective at resisting leaks and repelling water. The installation process occurs in four steps:

1. Base sheets are laid down and attached to the roofing deck
2. Felt is glued to the base sheets using adhesive, concrete, asphalt, or tar
3. Gravel or cap sheets are then installed over the felt
4. A final layer of asphalt completes the installation process

A properly installed BUR system creates a virtually impenetrable roof, able to keep severe weather and the elements from getting into the building it protects.

Modified Bitumen System Installation

Modified bitumen is an evolution of asphalt roofing that is a form of membrane flat roofing. The roofing system can sustain substantial foot traffic without wear. The following are the installation processes of torch-down and peel-and-stick modified bitumen roofing systems:

Torch-Down Modified Bitumen

1. The roof is cleared of debris
2. Heavy roofing felt is installed and nailed down
3. Flashing and primer are installed
4. The first sheet is rolled out along the edge of the roof (trimmed and fitted)
5. The sheet is rolled back up
6. A torch is used to slightly melt the bitumen as the sheet is rolled back out
7. Overlapping sheets are applied in the same manner until the roof is covered and sealed

Peel-and-Stick

1. The roof is cleared of debris
2. Heavy roofing felt is installed and nailed down
3. Flashing and primer are installed
4. The first sheet is rolled out along the edge of the roof (trimmed and fitted)
5. The sheet is rolled back up
6. The protective film is removed to expose the adhesive and rolled into place
7. Sheets are overlapped by about six inches until covering the entire roof
8. The system is pressed into place using a weighted roller
9. The roof edges are sealed with roofing cement and rolled again to seal the layers together

Before installing modified bitumen, verify that the existing material on the roof is compatible (previous systems using rubber can be eaten away, causing weaknesses and potential failure of the new modified bitumen system).

Metal Panel Roofing System Installation

One of the most durable roofing options (up to forty years), metal roofing is also one of the more expensive options. The following detail how a metal roofing system is installed:

1. The existing roof may need to be removed (depending on municipal codes and/or roof load capacity)
2. The roof deck is prepared (framework and insulation installation)
3. Flashing and eaves are installed
4. Metal panels are laid out and fastened to the roof (how they are fastened depends on which material the panels are composed of; aluminum, copper, steel, etc.)

Metal roofing can be installed using panels or steel shingles. Steel shingles are installed the same way as slate, clay, or concrete shingles.

New Commercial Building Roofing System Installation

A commercial building’s roof is its primary defense against damaging weather and natural hazards. Architects, builders, and building owners decide early in the designing stages which roofing system will be installed. Some of the factors that lead to a decision are:

• What equipment will be installed on the roof
• What is the needed roof load
• What type and how many protrusions will be needed (vents, exhaust pipes, skylights, drains, etc.)
• How and where will the roof shed water
• What is the expected foot traffic on the roof (walkways and reinforcements may be required)
• What is the anticipated lifespan of the roofing system
• Which commercial roofing system offers the best performance for future building activities (the roof used for an office building may not serve that used for a restaurant)
• Regional weather patterns (wind, rain, snow, hail, ice, and heat)
• Natural disasters (tornadoes, hurricanes, wildfires, earthquakes, etc.)

Many regions across the country experience one sort or another of natural disasters or recurring weather events. In many cases, these regions have developed laws or ordinances that require specific materials to be used when installing a new commercial roofing system.

Read more about what a commercial roof load is at atlantacommercialroofingcontractors.com/what-is-commercial-roof-load-why-you-need-to-know/

Replacing A Commercial Roofing System

For building managers, replacing a commercial roofing system is a rare event to see in one’s career. A well-installed and maintained roofing system can last decades before needing replacement.

When it comes time to replace the roof on your commercial building, the following steps will help you hire the right contractor to install the right roof for your building’s needs.

Bidding Process: Request bids from at least 3 contractors. By doing so, you can compare their prices, suggestions, more importantly, their work history, quality, and online reviews.

Roofing System Selection: The roofing system you select should accommodate the structure and purpose of your commercial building. An honest, professional roofer will help you determine which roofing system will serve your building best and advise you whether or not replacement is necessary.

Selecting a roofing system for your commercial building will require you to determine the best fit for your building, which system fits within your budget, which one offers the best protection and durability, and which maintenance program makes the most sense.

Roofing System Tear Off: If your current roof has reached the end of its life, it must be removed before installing a new one. This process exposes any flaws or defects in the roofing deck, which must be addressed before installing a new roof.

Roofing System Installation: Since every roofing installation is unique, a definitive installation timeline is difficult to project. The following should be taken into consideration when determining how long your installation will take:

• Roof deck repair (if required)
• The type of commercial roofing system
• The size of the roof (the larger the roof, the longer it will take)
• Unexpected weather events

Sometimes, when a permit is required to replace your roof, there may be stipulations that affect how and when the work can be done. To avoid delays, fines, and further punitive measures, permit requirements must be adhered to at all times.

Roofing System Guarantees, Warranties, and Maintenance Programs: Once your roofing system installation is complete, you should receive a:

• Guarantee covering the installation of your roof
• Warranty covering parts and materials
• Maintenance program proposal from your roofer to periodically perform inspections and minor repairs

Read more about what goes into a commercial roofing maintenance program at atlantacommercialroofingcontractors.com/maintenance-programs-services/

Commercial Roofing System FAQs

The following are answers to common FAQs based on general roofing information. Since no two commercial roofing systems are exactly alike, your specific situation may require further investigation for a more accurate response.

Question: How long will a commercial roofing system last?

Answer: A well-installed and maintained commercial roofing system can last from 30 years to the life of the structure it protects. The longevity of a roof depends mostly on the quality of its materials, installation, and maintenance program.

Question: My roof is leaking, what should I do?

Answer: Immediately contact your roofer. Whether you have a maintenance program or not, leaks must be addressed immediately to prevent structural damage to the roofing system and building.

Question: What is the difference between a commercial and residential roof?

Answer: Similar roofing systems can be applied to both commercial and residential structures. However, most commercial roofs will require a higher roof load to support HVAC and other equipment. They may appear very similar but are structurally different.

Read more about why you need to know your commercial roof load at atlantacommercialroofingcontractors.com/what-is-commercial-roof-load-why-you-need-to-know/

Commercial Roofing System Installation Process

In this article, you discovered information about new commercial building roof installation, commercial roofing replacement, and answers to common roofing questions.

By knowing what is involved in the commercial roofing installation or replacement process, you can make informed decisions when it’s time to select a roofing contractor and the best roofing system for your commercial building.

Not knowing what to do when you need a new roof can lead to the wrong roof installed, possible municipal code violations, expensive fines, and continuous roofing maintenance problems.

Sources:
wbdg.org/guides-specifications/building-envelope-design-guide/roofing-systems
buildings.com/article-details/articleid/4937/title/the-basics-of-roof-maintenance
asphaltroofing.org/bur-multi-ply-built-up-roofing/
whysprayfoam.org/spray-foam/roofing-systems/
amtrustfinancial.com/getmedia/7d774cf7-d8f4-455f-8b0d-a0d03a1c23fb/IBHS-Commercial-Roof-Best-Practices-Guide.pdf

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Commercial Roof Collapse Warning Signs

Avoid catastrophic financial loss and indefinite business closure from a collapsed roof at your building or commercial property. By knowing the signs that indicate an imminent roof collapse, and what preventative measures you can take.

atlantacommercialroofingcontractors.com gathered information about the signs that precede a roof collapse and what you can do to prevent it.

Sagging Roof or Ceiling

Contact your roofing company immediately if your ceiling and/or roof starts to sag. This is an alarming sign of structural failure that needs to be investigated and corrected before your roof fails altogether.

If you do not have a roofer, read Commercial Roof Repair, Insurance Claims, and Hiring Contractors to learn what qualifying questions to ask and what attributes to look for when hiring a roofing contractor.

My Roof Is Leaking or Signs of Water on the Ceiling

A leaking roof is never a good sign. Roof leaks are evidence that water is reaching your roof’s support structure and potentially causing devastating damages.

Once you spot a leak, you should have your roofer identify the source and evaluate the extent of structural damage sustained, if any.

Note: Any time your roof is leaking is cause for alarm. This problem needs to be fixed fast.

Sprinkler Heads and Ceiling Tiles Out of Alignment

If you notice your ceiling tiles or sprinkler heads out of alignment, your ceiling has shifted. Your ceiling isn’t supposed to move. If you notice a misalignment of your ceiling tiles or sprinklers, you need to find out why and correct it fast.

Doors and Windows Have Become Difficult to Open or Close

Similar to ceiling tiles or sprinkler heads out of alignment, if your doors and windows have become increasingly difficult to open or close, structural shifting has likely occurred.

If this is the case, this shifting can cause your roof’s support system to buckle and fail. Ironically, when you detect a problem with doors and windows, immediately call your roofer.

Cracks in The Exterior Walls of The Building

Cracks in the masonry on the exterior of your building are a clear indication that something is terribly wrong structurally. Among other possibilities, it could be a signal that your roof has become unstable and nearing failure.

To avoid catastrophic damages, have the building engineers inspect the structure and get your roofer on the scene to evaluate the integrity of the roof.

Note: Cracks in the interior walls, support columns, and/or ceiling also indicate severe structural problems. These cracks don’t happen without reason and should be promptly investigated.

Severe Weather Damage

Depending on the region you are located in, many weather-related factors can cause or contribute to the failure of your roof:

• Hurricanes
• Tornadoes
• Wind Storms
• Hail Storms
• Wildfires
• Snow Accumulation
• Extreme Temperature Fluctuations

Your roof should be inspected immediately following such weather events. In fact, if you have enough advance warning, have your roof thoroughly examined beforehand.

Note: If you live in areas prone to specific weather events, make sure that your roof/building insurance will cover damages from such events.

Read more about insurance claims following storm damage at atlantacommercialroofingcontractors.com/commercial-roof-storm-damage-insurance-claims/

New Equipment Installation

The installation of new or updated equipment on your roof may add considerable weight to it. In some cases, you may exceed your commercial roof load and put the integrity of your roof and building at risk.

When planning to install equipment on your roof, calculate your roof’s dead load, live load, and transient load capacity to avoid exceeding your total roof load capacity.

Read more about why you should know your commercial roof load at atlantacommercialroofingcontractors.com/what-is-commercial-roof-load-why-you-need-to-know/

Ponding Water

Ponding water may occur from clogged drain systems, a poorly installed roof, or a poorly maintained roof. Regardless of the reason, ponding water adds an incredible amount of weight to your roof structure.

In fact, one gallon of water weighs 8.34 pounds (100 gallons of rainwater can add 834 pounds of dead weight to your roof). When this water accumulates and persists, your roof’s load may be exceeded and lead to its failure.

Creaking and Popping Sounds

Some people believe that popping and creaking sounds are normal in buildings and simply dismiss them. Never assume that your building is just settling. If you hear these types of sounds, have your building engineer and roofer investigate them immediately, they may be occurring because of structural defects or failure.

The Building Has Shifted

If the following signs occur, it may be an indication that your building has shifted:

• The floors have become uneven
• The building “feels” like it has tilted
• Support columns and vertical installations appear to be angled

If your building has shifted on a structural level, there is a risk that your roof will suffer complete failure. Not to mention the risk of your building collapsing.

When the signs mentioned above are noticed, even in the slightest, your building engineer should be called to immediately investigate the cause.

Commercial Roof Collapse

If your commercial roof collapses, you will be forced to stop all production and completely close the building until your roof is replaced, and OSHA inspectors allow its occupation.

Your insurance claim can be denied if the insurance adjuster finds that the collapse was due to a lack of maintenance or a structural failure that could have been prevented.

Read about why commercial roofing maintenance programs are necessary and how they save you money at atlantacommercialroofingcontractors.com/maintenance-programs-services/

Signs of A Potential Roof Collapse

In this article, you discovered many of the signs that indicate an imminent roof collapse and what you can do to prevent it from happening.

By recognizing roof failure warning signs and promptly resolving them, you are protecting your business’ assets and avoiding a potentially lethal situation.

Your failure to act on signs of your roof’s structural failure can result in catastrophic production and financial losses when the roof collapses.

Sources:
eng-resources.uncc.edu/failurecasestudies/building-failure-cases/hartford-civic-center/
fo.umich.edu/pdf/Protecting_Buildings_from_Freeze.pdf
web.wpi.edu/Pubs/E-project/Available/E-project-081409-132533/unrestricted/IQP-Final.pdf
citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.531.7105&rep=rep1&type=pdf

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