Roofing Screws In The Ridge Or Flat

Having done several metal roofs since then i would say if you are an amateur screw on the flat with 1 1 2 screws.

Roofing screws in the ridge or flat.

Metal moves some heat cold expansion and makes a bigger hole in metal for a leak. Valid arguments can be made for both preferences. Your roof will have thousands of screw holes. On the ridges can distort the metal.

The idea being that the longer screws in the valley hold the sheet down and the shorter screws on the ridges keep the wind from picking up the sheet. Screws in the flat nails on the ridge. 250 brown 12 x 1 1 2 hex regrip sheet metal roof screw. As the screws are driven the washer presses against the metal roofing to form a water proof seal.

Ridge cap should be end lapped 6 inches at each end. Screwing or fastening down a metal roof is one of the easiest parts of a metal roofing installation but it s also the most problematic. The manufacturers recommend screws in the valley 3 per perling and shorter screws spaced 18 to 24 inches depends on the manufacturer on the ridges. Sharp point metal to wood siding screws.

Quite often the screws are over tightened or under tightened and when this happens it creates leak points. Place large tab closure between the ridge cap and the roof panels. The main cause of a leaking roof on a diy metal roofing installation is incorrectly fastening the screws. Attach ridge cap to rib of roof panel with screws on every rib along both sides of rib.

Make sure and not get them too tight don t squish the rubber gasket just nice and snug. Screwing high on the rib is difficult for the amateur. Make sure to screw through closures.