Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches.
Roofing felt requirments in florida.
Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches.
Apply a 19 inch 483 mm strip of underlayment felt parallel to and starting at the eaves fastened sufficiently to hold.
Vertical joints should lap a minimum of 4 inches and be offset by at least 6 feet in successive rows see figure 2 2 at left.
Starting at the eave apply 36 inchwide 914 mm sheets of underlayment overlapping successive sheets 19 inches 483 mm end laps shall be 6 inches and shall be offset by 6 feet.
Vertical joints should lap a minimum of 4 inches and be offset by at least 6 feet in successive rows see figure 2 2.
On roofs with a slope of 4 12 or greater use a single layer of 15 lb.