Constructed from fiberglass mat, impregnated and coated with hot asphaltic saturant, then coated on the weather side with mineral granules in a 36 in wide path. This forms a 36 in wide mineral surfaced roll. For use with low-sloped roofs. 90# can be used as an underlayment and a final cap sheet. 108 square foot coverage. 50 mil. thickness.
Can Be Used As An Underlayment And A Final Cap Sheet