Roofing Nails For First Layer

For dimensional shingles being installed over a layer of existing dimensional shingles you should always use a 1 1 2 inch roofing nail.

Roofing nails for first layer.

Roofing nails roofing nail sizes sheathing 3d box 4d box 5d box 6d box what size roofing nails composition shingles wood shakes wood shingles. Roll roofing is often installed over bare wood sheathing or sheathing that has been painted with a primer. Applying roofing felt first will better protect the sheathing against condensation as well as against leaking. The membrane used must have a polyester carrier to ensure good tensile strength.

Select a length of roofing nails that penetrates completely through the new layer of shingles existing layer and the wood roof deck. You will be placing the second layer of felt over this. Nail metal drip edge flashing which bends over the roof and down the edge of the facing board on all roof edges. You ll need longer nails for this part as you re driving through more layers of shingles.

Ensure the felt remains even and straight as you work. You can either use special shingles called ridge shingles or cut a number of regular shingles into 3 tabbed equal pieces and bend each so they fit snugly on the roof peak and nail them into place. Install the eave piece first then the rake piece over it. It s best to start nailing in the center and work out from there.

For a slightly sloped roof use the concealed nail method shown. Fasten drip edge on eaves with galvanized nails and a hammer about 12 inches. The two pieces should meet neatly at the corners. The first layer of modified bitumen is then laid over the membrane before being cut to size to fit the surrounding area.

Paint a thin layer of adhesive over the first felt layer. The first bituminous membrane sheet should then be positioned onto the roof before being secured to the surface typically using a nail gun. Drive nails at high points on the underlying roof the bottoms of the shingles. Using galvanised clout nails nail down the first layer of felt.

Apply the shingles to all roof planes ending a row of shingles at the top of the plane which is the ridge or peak and cut to follow the profile of any outside corners.