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.
Estimate roof felt nails.
Pack use the grip rite 11 x 1 1 4 in.
Roofing felt is sold by the roll.
Electrogalvanized steel roofing nails 5 lb.
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.
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.
One and a half inch roofing nails typically have a large 11 gauge shank and an oversize 7 16 inch flat head.
Put fasteners at least every 8 inches.
Use a construction stapler or a hammer.
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.
Always use 1 in 2 5 cm nails.
The nails should be long enough to go 3 4 inch 1 9 cm into the roof.
Inquire at the hardware store regarding the amount of underlayment nails required.
How many rolls of felt will you need.
In high wind areas you need five nails per shingle or 480 nails per square.
3 degree use the grip rite 11 x 1 1 4 in.