Roofing Screws In The Ridge Or Flat

Attach ridge cap to rib of roof panel with screws on every rib along both sides of rib.

Roofing screws in the ridge or flat.

If the screws are driven correctly fastening through either the valleys or the ridges of the roofing is considered acceptable in this country. I strap all roofs with nothing less than 2 4 to help lock that roof in place. Make sure to screw through closures. Your roof will have thousands of screw holes.

Make sure and not get them too tight don t squish the rubber gasket just nice and snug. Quite often the screws are over tightened or under tightened and when this happens it creates leak points. 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. 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.

Screwing high on the rib is difficult for the amateur. Sharp point metal to wood siding screws. 4 6 out of 5 stars 10. On the ridges can distort the metal.

Place large tab closure between the ridge cap and the roof panels. As the screws are driven the washer presses against the metal roofing to form a water proof seal. Metal moves some heat cold expansion and makes a bigger hole in metal for a leak. Valid arguments can be made for both preferences.

The main cause of a leaking roof on a diy metal roofing installation is incorrectly fastening the screws. Having done several metal roofs since then i would say if you are an amateur screw on the flat with 1 1 2 screws. 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.