It has just one layer so it goes.
How to lay asphalt roll roofing.
Roll roofing is made from the same asphalt composition material as shingles and it s easier to install.
It also helps if you first install a layer of roofing felt.
If you install roll roofing using the double coverage method it will last longer.
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.
The strips should always be horizontal.
Install drip edge and install 9 cant strips of roll roofing material along the rake and eaves edges gable ends and lower roof edge such that the roofing strip overhangs the roof deck by 1 4 to 3 8.
Applying roofing felt first will better protect the sheathing against condensation as well as against leaking.
Prepare roof edges cant strips.
To install roll roofing you ll need to cut the material into long strips of the correct length for your roof and lay it flat.
A typical roof has three layers a felt layer and two layers of overlapping shingles.
For extra durability you may install roll roofing in two layers.
On aug 14 2009.
You ll need to use plenty of pressure with the razor knife to cut the rolled roofing material.
How to install roll roofing on low slope roofs.
There are three systems including glue down torch down and peel and stick.
Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o.
Roll roofing is different.