How To Lay Roll Roofing On A Flat Roof

Installation tips and guides.

How to lay roll roofing on a flat roof.

Modern technologies have significantly improve the performance of bitumen roll materials to extend their service life of up to 15 25 years and made them more universal. You ll need to use plenty of pressure with the razor knife to cut the rolled roofing material. Prepare the roof by tearing off the old shingles or by preparing for a reroof. Roll out and cut roll roofing to cover the length of the roof.

Installing peel and stick roll roofing on a flat roof requires a minimum slope of 1 2 inch per 12 inch roof run. This should give you a 1 inch overhang on the eaves including the top edge. Working with a helper expect to spend half a day installing flashings and roll roofing for a 700 square foot roof with modest complications. For a flat or nearly flat roof use double coverage although a torch down modified bitumen or epdm roof is a better solution.

Place the top edge of the roofing along the chalk line.