What is an SBS roof?

What is an SBS roof?

SBS modified bitumen roofing is a material made out of asphalt and synthetic rubber, making it an exceptionally flexible material for flat roofs. This material works best on low-slope commercial roofs, and many manufacturers use glass, polyester, or composite reinforcements.

What is SBS insulation?

Styrene-Butadiene-Styrene (SBS) describes a family of synthetic rubber derived from styrene and butadiene. SBS is a thermo plastic elastomer that has an excellent abrasion resistance and aging stability when blended with bitumen, making it the perfect bitumen modifier to achieve cold flexibility and elastic properties.

Is EPDM torch down?

The best and most affordable options for flat roofing are either torch-down roofing or EPDM roofing. EPDM roofing offers the same advantages. Its overlapping seams ensure zero property water damage during heavy rainfalls.

How much does a torch down roof cost?

Torch down roofing costs range from $3 to $6 per square foot fully installed. Each torch down roof is comprised of a number of bitumen, polyester and fiberglass layers.

What is SBS torch?

Modified Bitumen Roofing, commonly known as “torch on roofing”, was born out of the desire to improve bitumen’s waterproofing characteristics by adding rubber (SBS) to the bitumen. The heat of a torch or hot asphalt is used to fuse layers of SBS membranes together creating the roof system.

Is EPDM better than torch down?

Torch Down Rubber roofs will outlast any other roof system by 30 years and more if installed correctly. Due to marketing tactics, EPDM roofs became more popular than Torch Down roofs. It is harder to find roofing contractors that know how to install Torch Down Roofs.

Can you torch down over existing roof?

A 2 ply torch down membrane can be installed over any existing roof or surface, to include a Hot-Tar-and-Gravel roof system. The first step is to install a fiber asphalt base fastened with anchors and washer plates, to the existing roof, or to a substrate.

Is SBS torch on?

Modified Bituminous Membranes – SBS (Torch On) A SBS blend is more elastic than bitumen. The blend performs better when a roof is exposed to significant increases or decreases in ambient temperature over short periods in time.

Can SBS membranes be used in torch down roofing?

This means that SBS membranes can be used in torch down roofing, as well as self-adhering and cold-processed roofing systems. Both two-layer and three-layer roof systems feature the same base and support components, applied in the same order.

What is torch down roofing and how does it work?

Torch down roofing consists of multiple modified bitumen membranes, applied with a propane torch. This installation process gives torch down roofing a uniquely watertight seal, making it a great choice wherever water damage is a serious concern.

How is torch down roofing secured to the overlay board?

The base sheet for torch down roofing may be secured to the overlay board by either direct heat fusing, hot mopping or with adhesive. Cap sheet: The top membrane sheet to a torch down roofing system is a smooth cap sheet. As it is rolled out, the roofing professional will use a torch to heat the bottom of the cap to the top of the base sheet.

What type of bitumen is used for torch down roofing?

There are two main types of modified bitumen membrane that are used to create torch down roofing material: Atactic Polypropylene (APP) and Styrene Butadiene Styrene (SBS). APP is a type of plastic used to produce modified bitumen for torch down roofing. APP modified bitumen membranes are especially flexible.