MultiPurpose underlayment

LeakBarrier: SBS MultiPurpose Underlayment

 

Uniquely Wrinkle-free and Lays Flat

 

LeakBarrier SBS MultiPurpose Underlayment is a unique and highly versatile glass fiber reinforced sheet sandwiched between two layers of superior quality polymer modified bitumen. Due to its remarkable characteristics, SBS MultiPurpose Underlayment meets the requirements of the ASTM D1970 Moisture Vapor Permeability and ASTM D4869 liquid water transmission tests.

 

Usage

 

LeakBarrier SBS MultiPurpose Underlayment is designed for use under composition shingles, shake applications, all types of tile, and metal roofing. It is especially suited for use as a base sheet/ply sheet in modified bitumen, asphalt built-up and cold process roofing systems.

 

Features and Benefits

 

Use as an alternate for 15, 30 & 40# saturated felt

 

Greater exposure time than ASTM D226 felts as inorganic glass fiber mat resists the long term effects of moisture

 

Excellent as a valley liner

 

Cost-effective

 

Versatile sheet; can be installed in a variety of applications.

 

Easy to handle

 

Good durability

 

Excellent deadfold characteristics

 

Self-sealing around nails

 

Superior pliability of specially formulated SBS asphalt facilitates a wrinkle free flat laying sheet

 

Fiber glass reinforcement eliminates the rot prevalent with saturated felt

 

Manufactured with 8 ply lines

 

Meets ASTM D226 Type I and II; ASTM D4601

 

Surpasses ASTM D6380 Class S Type IV requirements (applicable sections)

 

Passes ASTM D4869 Liquid Water Transmission test

 

Passes ASTM D1970 Moisture Vapor Permeability Test

 

Complies with the requirements of the International Residential Code (IRC) for Valley Lining material.

 

UL Classified (R13228) for use in class A and B roofs.

 

 

Done