Commercial Modified Bitumen Roofing in Fresno, CA

Durable Cool Roofs, Inc.

Serving California and the Western States

Commercial Modified Bitumen Roofing  in Fresno, CA / Durable Cool Roofs, Inc.

Modifiers are added to standard roofing asphalt to replace plasticizers removed during the distillation process. Bitumen is reinforced with fiberglass or polyester fiber matting in order to increase durability and strength.

The two most common types are SBS and APP. The use of SBS (styrene-butadiene-styrene) increases the flexibility of the membrane and allows it to have stronger expansion and contraction capabilities. APP (atactic polypropylene) increases the aging ability of the roof system. SBS is often the more popular system as the synthetic rubber additive increases the product's flexibility.

Application Method

Modified commercial bitumen roof systems can be installed with the common torch method, asphalts, or cold adhesives. A standard SBS modified commercial bitumen roof system is a two-ply system applied in rolls that overlap the edge of the previous roll.


  • Very durable
  • Weather resistant
  • Easy to repair
  • Factory manufactured rolls are easier to install and ensure quality control
  • Flexible, expands and contracts

We are your best option for installing and servicing high-efficiency and cost-effective modified bitumen roofing systems in Central California.

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License C39927886
Duns #027962170
SB, MB, WOSB, 8(a) Certified
CAGE - 5CT73
NAICS - 238160, 423330
PSC - 5650
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