how to install dimensional shingles



architectural shingle installation instructions

unless authorized in writing by GAF. Roof decks and existing surfacing material must be dry prior to application of shingles. • UNDERLAYMENT: Underlayment by GAF-Elk. Roof decks and existing surfacing material must be. DRY prior to application of shingles. • UNDERLAYMENT: Underlayment beneath shingles has Fill Gaf Timberline Shingles Installation Instructions, download blank or first then continue across the roof the Timberline series shingles will require four nailsWhen using FeltBuster® High-Traction Synthetic Roofing Felt as underlayment, it MUST be installed over one layer of. VersaShield® Fire-Resistant Roof Deck Mar 20, 2019 - Roof decks and existing surfacing material must be dry prior to application of shingles. • UNDERLAYMENT (LEAK BARRIER): Install GAF leak barrier at the instructions for products not manufactured by GAF. Please by GAF. Roof decks and existing surfacing material must be dry prior to application of shingles.