Description:
G.A.P. Roofing, Inc. G 15 roofing felt is a widely accepted underlayment product that is manufactured from organic felt and is saturated with asphalt.

Documents:
Product Data Sheet
SDS
Installation Instructions

Product Use:
G 15 Felt is an underlayment is applied over the roofing deck before installation of asphalt shingles. This is recommended for use with 20-year asphalt shingles.

Material Performance: