How To Lay Roll Roofing On A Flat Roof

Installing peel and stick roll roofing on a flat roof requires a minimum slope of 1 2 inch per 12 inch roof run.

How to lay roll roofing on a flat roof.

The rolled roofing should reach the chalk line when you lay it down and should stretch from 1 side of the roof to the other. Typically a flat roof is a low sloping roof with a maximum 10 degrees of pitch or usually having a slope of up to 3 inches per linear foot for adequate drainage. For a flat or nearly flat roof use double coverage although a torch down modified bitumen or epdm roof is a better solution. Installation tips and guides.

Roll out and cut roll roofing to cover the length of the 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. This should give you a 1 inch overhang on the eaves including the top edge.

Prepare the roof by tearing off the old shingles or by preparing for a reroof.