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BUILT-UP & MODIFIED ROOFING
WHAT IS BUILT-UP (BUR) ROOFING?
Built-up roofing, also called BUR, is the most common roofing material used on low-slope roofs. It is composed of alternating layers of reinforcing fabric and bitumen (asphalt) and is finished with a top layer of aggregate, such as stone or gravel. BUR is preferred for low-slope, or “flat,” roofs because it creates a continuous sealed surface.
Built-up roofing is nothing new. The concept been around for over 100 years, although the material and its installation certainly have evolved during that time. Modern built-up products incorporate a rigid insulation layer for improved energy efficiency.
OUR BUILT-UP & MODIFIED
ROOFING SYSTEMS
B.U.R
BUILT-UP
ROOFING
Most built-up roofing is comprised of three parts: bitumen material, ply sheets, and one or more surfacing materials. The bitumen can be either “hot,” meaning it is heated so that it liquefies during installation, or it can be “cold,” which is more like an adhesive and is not heated. Cold built-up roofing can be sprayed or applied with a squeegee. It does not give off toxic fumes during application and is not dependent on weather. It also offers better performance than hot built-up roofing.
Depending on the climate and the specific materials used, built-up roofing has an average life expectancy of 15 to 30 years, but some constructions can last up to 40 years.
MODIFIED BITUMEN
Modified bitumen is a very durable product, especially in high-traffic areas and when confined to smaller roof areas with a high density of service equipment. The flexible nature of the “modifiers” allows owners to select a roof that is a thicker product and more resistant to building movement and metal-to-membrane interfaces than a built-up roof (BUR) system.
We typically uses a base layer of fiberglass, topped with a reinforced layer of polyester. This yields a stronger, more puncture-resistant, and warrantable roofing system.
Benefits of T.P.O:
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Highly reflective
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Superb UV resistance
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Includes a full line of black and white accessories
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Complete line of heat-weldable prefabricated accessories
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Available with pre-applied seam tape to ensure uniform adhesive and thickness
Benefits of Modified:
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High-Grade Weather-Resistance
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Exceptional Durability
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Tear-Resistance
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High Energy-Efficiency
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Flexibility
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Repairs are Easy & Simple
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Easy Maintenance