Description:
Valley Seal 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, Valley Seal meets the requirements of ASTM D1970 Moisture Vapor Permeability and ASTM D 4869 Liquid Transmission tests.

Documents
Product Data Sheet

Product Use:
Specially formulated SBS gives lasting performance. Polymer modified asphalt gives excellent pliability and excellent durability. Valley Seal lays flat and resists wrinkling for ease of application. It is easier to work with than metal or peel-and-stick materials. Meets ASTM D226 Type I and Type II; ASTM D4601. Passes ASTM D4869 Liquid Water Transmission test. Passes ASTM D1970 Moisture Vapor Permeability.

Material Performance: