asphalt roofing felt 30# - ASTM D 4869 and 226

Installation

Step 1

Install the roof framing and ensure that it provides a level surface; add blocking if needed to fix any twisted areas of framing.

Step 2

Ensure proper ventilation that meets or exceeds all applicable building code requirements.

Step 3

Space and fasten panels; place panel ends over supports; space panels 1/8 inch (the diameter of a 10d box nail) apart to allow for possible moisture expansion; install fasteners 3/8 inch from the edge of the panel at the appropriate on-center spacing. Install panel clips when required.

Step 4

Install shingle underlayment or No.15 roofing felt to minimize exposure to weather prior to applying shingles (use No. 30 roofing felt if prolonged exposure is expected); apply evenly leaving a smooth surface.

Step 5

Install shingles or other roof covering according to the manufacturer's recommendations; heavyweight, laminated and textured shingles create the best appear­ance.