Roofing Felt For Low Pitch Roofs

Asphalt saturated felt along the eaves and lap succeeding courses by 19 inches as shown in figure 2 3.

Roofing felt for low pitch roofs.

A typical roof has three layers a felt layer and two layers of overlapping shingles. Asphalt shingles can be used on roofs with a slope of 2 12 to 4 12 if double coverage underlayment is used. In low slope roofs which include 2 12 up to 4 12 felt courses should overlap a minimum of 19 inches. Roll roofing is different.

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. And one of them is their 30rf standard roofing felt which has a few distinct features up its sleeve. Product overview the makers at orgill roofing felt have a few solid options for the homeowners out there. For starters it s a bit on the thicker side.

It has just one layer so it goes on fast and can be installed by a homeowner with. 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. In any case roofing felt alone is can not make a roof waterproof. In combination with iko roof fast cap sheets it provides waterproofing properties and durability for low slope roofs.

Guide to roofing underlayment installation on low slope roofs with asphalt shingles.