For starters it s a bit on the thicker side.
Roofing felt for low pitch roofs.
This will provide a double layer of underlayment across the entire roof.
I italicized atop because on very low slope roofs some shingle installation applications specify interlaying a course of felt underlayment perhaps using 30 felt between every shingle course as part of making a shingled roof on a low slope a successful installation.
It has just one layer so it goes on fast and can be installed by a homeowner with.
This will provide a double layer of underlayment across the entire roof.
A typical roof has three layers a felt layer and two layers of overlapping shingles.
In low slope roofs which include 2 12 up to 4 12 felt courses should overlap a minimum of 19 inches.
Iko roof fast base ma is a fiberglass reinforced nailable base with a special film surface designed to be used as one of iko s roof fast low slope roofing components.
In any case roofing felt alone is can not make a roof waterproof.
Asphalt shingles can be used on roofs with a slope of 2 12 to 4 12 if double coverage underlayment is used.
Roll roofing is different.
Asphalt saturated felt along the eaves and lap succeeding courses by 19 inches as shown in figure 2 3.
In combination with iko roof fast cap sheets it provides waterproofing properties and durability for low slope roofs.
Product overview the makers at orgill roofing felt have a few solid options for the homeowners out there.