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Are you looking for a durable and economical roofing solution? A built-up roofing system (BUR) may be what you are looking for.

newimageroofingatlanta.com gathered information on built-up roofing systems (BUR), its benefits, installation, maintenance, and how it compares to other popular roofing systems. Consider the following:

What is Built-Up Roofing (BUR)?

Built-Up Roofing (BUR) is a time-tested, staple roofing system in the construction industry. This roofing system is composed of multiple layers of bitumen (asphalt or coal tar) and reinforcing fabrics, typically fiberglass or organic felts. These layers are applied in a repetitive fashion, creating a seamless, durable membrane. Gravel or mineral granules are often embedded into the top layer to protect it from the elements and provide significant UV resistance.

BUR Installation

Installing a built-up roofing system is a somewhat labor-intensive process that requires the expertise of skilled roofing contractors. Here is a step-by-step guide to how BUR is installed:

Deck Preparation – The process begins with preparing the roof deck, ensuring it is clean, dry, and in good condition. Existing roofing material is removed, and any necessary repairs are made.
Vapor Barrier Installation – A vapor barrier is installed to prevent any moisture from entering the building through the roof. This layer is essential for maintaining a comfortable indoor environment.
Insulation – Insulation is added to improve energy efficiency and temperature control. Insulation can help reduce heating and cooling costs.
Felt Layers – The first layer of roofing felt is applied directly over the insulation. This is typically a base sheet, and is secured using hot asphalt or adhesive.
Bitumen Application – Multiple layers of bitumen are applied over the base sheet. The bitumen is heated and spread evenly across the roof, followed by the application of a reinforcement fabric.
Reinforcement Fabric – Fiberglass or organic felts are embedded into the hot bitumen. This adds significant strength and stability to the roofing system.
Repeat – Steps 5 and 6 are repeated until the desired number of layers is achieved. A BUR system typically consists of three to five layers.
Surface Layer – The top layer or cap sheet, is made of bitumen and covered with aggregate materials like gravel or mineral granules. This layer provides protection against weather and UV radiation.
Final Inspection – After the surface layer is installed, a final inspection is performed to ensure that the roofing system is correctly installed, and there are no defects.
Maintenance – Regular maintenance is essential for a BUR system to maximize its lifespan and performance. Periodic inspections, cleaning, and repair of any damaged areas are crucial to its long lifespan.

BUR Advantages

Built-Up Roofing has several advantages contributing to its enduring popularity:

Proven Durability – BUR systems are known for their long lifespan, often exceeding 20 years or more with regular maintenance. The roofing system’s multiple layers and redundancy make it resistant to leaks and damage.
Waterproofing – The bitumen layers and reinforcing fabrics create a seamless, waterproof barrier that effectively protects the building from any water infiltration.
Thermal Performance – The insulation layers in BUR systems can enhance a building’s energy efficiency, reducing heating and cooling costs.
Fire Resistance – BUR systems can be made with fire-resistant materials, making them an excellent choice for buildings in regions prone to wildfires or with strict fire codes.
UV Resistance – The top layer of aggregate materials offers UV protection, extending the roofing system’s lifespan.

BUR Disadvantages

While Built-Up Roofing offers multiple benefits, it also comes with some drawbacks:

Installation Complexity – BUR installation is labor-intensive and requires experienced roofers. This can increase the initial installation cost.
Weight – BUR systems can be heavy, potentially requiring additional structural support for some buildings.
Maintenance Requirements – Regular maintenance is crucial to ensure a BUR system’s longevity, which can add to the overall cost of ownership.
Odor and Fumes – The installation process involves heating bitumen, which releases unpleasant odors and fumes. Proper ventilation is necessary during installation.

TPO and PVC Roofing System Comparison

To make an informed decision about your roofing system, it’s essential to compare BUR to other popular options, like Thermoplastic Polyolefin (TPO) and Polyvinyl Chloride (PVC) roofing systems.

TPO Roofing Vs. BUR

TPO roofing is a single-ply membrane roofing system made from a blend of rubber and other materials. Here’s how it compares to BUR:

Installation – TPO roofing is relatively easier and quicker to install compared to BUR, which can significantly reduce labor costs.
Durability – BUR is known for its durability and long lifespan, often exceeding TPO systems. TPO can be more vulnerable to punctures and tears.
Energy Efficiency – TPO roofing reflects sunlight effectively, helping reduce cooling costs. However, BUR systems with added insulation can achieve similar energy efficiency.
Cost – TPO roofing can be cost-effective in terms of installation, but BUR may provide better long-term value due to its durability.

PVC Roofing Vs. BUR

PVC roofing, like TPO, is a single-ply membrane roofing system made of polyvinyl chloride. Here’s how it compares to BUR:

Installation – PVC roofing installation is similar to TPO (ease and speed). It may be a more cost-effective option for initial installation.
Durability – BUR is often considered more durable and resilient against severe weather conditions. PVC roofing may be more prone to damage over time.
Energy Efficiency – PVC roofing has excellent UV resistance and reflects sunlight effectively, providing energy savings. However, BUR can achieve similar results with added insulation.
Cost – PVC roofing can be cost-effective for initial installation, but BUR offers better long-term value and longevity.

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Built-Up Roofing Systems

In this article, you discovered what built-up roofing is, how it is installed, its advantages and disadvantages, and how it compares to other low slope roofing systems.

Understanding the various roofing system qualities, advantages, and disadvantages allows you to make an informed decision when determining which roofing system is best suited for your needs.

Unfamiliarity with roofing system advantages and disadvantages may lead you to installing an overpriced or improper roof on your residential or commercial structure.

Sources:
nps.gov/crps/tps/roofingexhibit/composition.htm
gsa.gov/real-estate/historic-preservation/historic-preservation-policy-tools/preservation-tools-resources/technical-procedures/types-of-flat-roofing-and-factors-affecting-its-deterioration
asphaltroofing.org/bur-multi-ply-built-up-roofing/

New Image Roofing Atlanta

2020 Howell Mill Rd NW Suite 232
Atlanta, GA 30318
(404) 680-0041

Avoid installing the wrong roofing system on your commercial building. Knowing the benefits of an EPDM roofing system and how one protects your structure will help you determine which commercial roofing system is best for your needs.

newimageroofingatlanta.com gathered essential information on EPDM roofing systems, their compelling benefits, and how they are manufactured.

What is EPDM?

EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber material commonly used in multiple applications, including roofing systems. This material is renowned for its excellent durability, weather resistance, and versatility. EPDM roofing membranes are widely used in the construction industry to install flat or low-slope roofs on industrial, commercial, and residential buildings. Consider the following benefits of EPDM roofing:

Exceptional Durability – One of the primary reasons for selecting an EPDM roofing system is its exceptional durability. EPDM is a synthetic rubber membrane that can withstand a range of environmental stressors, including:

Exposure to UV rays
Extreme temperatures
Inclement weather conditions

EPDM roofs have a proven track record of longevity. They can last anywhere from 20 to 30 years or more with proper maintenance, making them a durable, reliable, and cost-effective roofing solution.

Superior Weather Resistance – EPDM roofing systems are renowned for their ability to withstand a range of severe weather conditions. They are highly resistant to damage from rain, snow, hail, and ice. EPDM membranes are designed to expand and contract with temperature fluctuations, ensuring they remain intact and effective over time. This weather resistance provides unparalleled peace of mind to property owners, knowing that their roofs can stand up to the elements.

Energy Efficiency – EPDM roofs are excellent at reflecting sunlight and heat away from the structure, contributing to significant energy savings. EPDM roofing’s reflective nature helps reduce the cooling load on the building during hot summer months, leading to lower energy bills. EPDM roofing materials are often completely recyclable, further promoting environmental sustainability and reducing your carbon footprint (associated with cooling systems).

Low Maintenance Requirements – Maintaining an EPDM roofing system is straightforward, and its low maintenance requirements are another significant advantage. Routine inspections and occasional cleaning are typically all that’s required to keep your EPDM roof in excellent condition. EPDM’s resistance to mold and algae growth helps maintain its pristine appearance and structural integrity, reducing the need for frequent repairs or replacements.

Cost-Effective Installation – EPDM roofing systems are known for their cost-effective installation. They are lightweight and can be installed quickly, which leads to reduced labor costs. Additionally, EPDM membranes come in large rolls, allowing for seamless installation with minimal seams or joints, reducing the risk of leaks over time. This efficiency in installation can save property owners substantial time and money.

Eco-Friendly Alternative – EPDM roofing systems are an eco-friendly roofing option. EPDM membranes are typically composed of recyclable materials and can be fully repurposed at the end of their useful life. This sustainable aspect aligns with the growing demand for environmentally responsible construction practices.

Note: EPDM roofs also contribute to energy efficiency, reducing the carbon footprint of the building and helping property owners reduce their environmental impact.

Versatility and Adaptability – EPDM roofing systems are incredibly versatile and adaptable to multiple architectural styles and roof designs. They can be installed on flat roofs, low-slope roofs, or even steep-slope roofs. EPDM roofing materials are available in different thicknesses and can be fully adhered, mechanically fastened, or ballasted, depending on your project’s specific needs. This versatility makes EPDM a suitable choice for both new construction and roof replacement projects.

See if an EPDM roofing system is appropriate for your structure by requesting a free roof inspection.

How is EPDM Manufactured?

To fully understand how EPDM offers so many incredible benefits, here’s an overview of how EPDM roofing membranes are manufactured:

Raw Materials – EPDM is made from a combination of several raw materials, including:

Ethylene
Propylene
Diene monomers

These materials are derived from petrochemical sources. The specific formulations and additives may vary depending on the manufacturer and the intended application.

Polymerization – The manufacturing process begins with the polymerization of the raw materials. This process chemically bonds the ethylene, propylene, and diene monomers to create the EPDM polymer. The polymerization is typically done using catalysts and heat.

Vulcanization – After the EPDM polymer is formed, it needs to be vulcanized to achieve its desired physical properties. Vulcanization is a polymer cross-linking process that increases strength, durability, and heat resistance. This is typically achieved by adding sulfur and using heat or chemical accelerators.

Processing – The vulcanized EPDM rubber is processed into the desired form, which is often in large sheets or rolls. During this stage, multiple additives may be mixed in to enhance specific properties, like UV resistance, flexibility, and/or flame resistance.

Sheet Formation – The EPDM rubber is then processed into sheets or rolls at a desired thickness. These sheets are typically available in various widths and lengths to suit different roofing applications.

Curing – The EPDM sheets may go through a curing process to ensure that they are fully set and ready for use. This process typically involves applying heat to further improve their physical properties.

Reinforcement – Some EPDM roofing membranes may have reinforcement layers incorporated into them. These reinforcement layers, often made of polyester or fiberglass, are embedded within the EPDM sheets (creating a composite) to provide additional strength and stability.

Final Quality Control – Before the EPDM roofing material is packaged and shipped to customers, it undergoes multiple rigorous quality control checks to ensure that it meets industry standards and specifications. This includes checking for defects, thickness consistency, and quality.

Once the EPDM roofing material is manufactured and quality-controlled, it is ready for distribution and installation on roofs. EPDM roofing systems are known for their ease of installation, as the sheets can be adhered to the roof substrate using various methods, like adhesive, ballast, or mechanical fasteners.

Visit and subscribe to this commercial and residential roofing contractor’s YouTube channel for short informational videos on multiple roofing topics.

EPDM Roofing Systems

In this article, you discovered what EPDM is, its multiple benefits, and how it is manufactured for roofing systems.

Understanding what EPDM is, its valuable benefits, and its extreme versatility will contribute to making informed decisions when installing or replacing your roofing system.

Failure to educate yourself about different roofing systems can lead to an inadequate or problematic roof being installed on your structure with costly consequences.

Sources:
energystar.gov/products/building_products/roof_products/other_types_roofing_that_can_save_energy
gccds.msstate.edu/research/altconstruction/roof/roof.pdf
vtechworks.lib.vt.edu/bitstream/handle/10919/109460/polymers-14-01308.pdf?sequence=1&isAllowed=y
mulehide.com/en-us/News-Events/Blog/why-choose-epdm

New Image Roofing Atlanta

2020 Howell Mill Rd NW Suite 232
Atlanta, GA 30318
(404) 680-0041

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Built-Up Roofing (BUR) – Everything You Need to Know