Always use 1 in 2 5 cm nails.
Estimate roof felt nails.
3 degree electro galvanized steel roofing nails 5 lb pack for applying roofing asphalt shingles insulation board and felt to wood substrates.
Nails are purchased by the pound so ask your dealer for the correct amount of nails for your size roof in the length you specify.
Owens corning provides estimating guidelines to estimate the amount of shingles nails and underlayment you will need for your roofing project as well as tips for determining your roof slope.
The average roll of 15 pound roofing felt covers about 400 ft 2 or 4 squares while the average roll of 30 pound roofing felt covers about 200 ft 2 or 2 squares.
Pack use the grip rite 11 x 1 1 4 in.
Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30.
Put fasteners at least every 8 inches.
3 degree use the grip rite 11 x 1 1 4 in.
Electrogalvanized steel roofing nails 5 lb.
Roll out about 10 feet of felt and fasten with staples or roofing nails with plastic washer heads.
How many rolls of felt will you need.
The nails should be 12 inches 30 cm apart along the edges and 24 inches 61 cm apart in the middle of the underlayment strip.
In high wind areas you need five nails per shingle or 480 nails per square.
Use a construction stapler or a hammer.
The nails should be long enough to go 3 4 inch 1 9 cm into the roof.