Bituminous Roofing | M2 Roofing

Bituminous Roofing Systems

Bituminous roofing systems utilize bitumen, a resilient mixture derived from crude oil. This versatile roofing material is applied in various forms to create durable and weather-resistant membranes suitable for a wide range of commercial applications.

Built-Up Roofing (BUR):

Description: BUR, often known as "tar and gravel" roofing, consists of multiple layers of bitumen alternated with reinforcing layers of roofing felts (typically fiberglass or organic felts). The final layer may include a surface coating of gravel or mineral granules for protection against UV rays.

Application: Layers are applied using hot asphalt or cold adhesive, and the roof is built up to create a durable, multi-layered system.

Advantages: BUR systems are known for their longevity, fire resistance, and waterproofing capabilities. They are suitable for flat or low-slope roofs.

Modified Bitumen Roofing:

Description: Modified bitumen roofing incorporates modifiers, such as SBS (Styrene-Butadiene-Styrene) or APP (Atactic Polypropylene), into the bitumen. These modifiers enhance the bitumen's flexibility, elasticity, and other performance characteristics.

Application: Modified bitumen is available in sheets or rolls and can be applied using heat welding, hot asphalt, cold adhesive, or self-adhering techniques.

Advantages: Modified bitumen roofing offers improved flexibility, weather resistance, and ease of installation compared to traditional BUR systems. It is suitable for low-slope or flat roofs.

SBS Modified Bitumen (Styrene-Butadiene-Styrene):

Description: Incorporates a synthetic rubber modifier (SBS) that enhances flexibility and elasticity.

Application: Suitable for a variety of installation methods, including torch-applied, hot-mopped, and cold-adhesive applications. It is often used on flat or low-slope roofs.

Advantages: Excellent flexibility, weather resistance, and durability. Suitable for various roof types, including low-slope and flat roofs.

APP Modified Bitumen (Atactic Polypropylene):

Description: Utilizes a thermoplastic polymer (APP) for modification, providing a more plastic and flow-resistant membrane.
Application: Typically applied using a torch, APP modified bitumen provides a durable and weather-resistant roofing system.
Advantages: Good UV resistance, improved weathering characteristics, and enhanced dimensional stability. Well-suited for areas with high UV exposure.

To Find Out More Information

Or For A Free Estimate

Click Here

Bituminous Roofing Systems

Affiliations

Arkansas Contractor Lic # 0351170323