If you have a low slope roof this is especially important.
Minimum roof pitch for gaf shingles.
At eaves use gaf weatherwatch or stormguard leak barrier.
For roof slopes greater than 4 12 the roof deck must be covered with a minimum of one layer of underlayment as described in sections 7 2 and 7 3 of this report.
Asphalt felt paper that is tacked to the roof sheathing.
Fasteners are as described in section shingles must be fastened to the roof deck with a nailing pattern in figure 1.
And your family can remain in the home during the installation or repair.
Metal roof shingles require a minimum roof pitch of 3 12 or greater.
Thanks to digital technology all of your decisions and interactions from selecting the right roofer to choosing a shingle to paying the contractor can be done at a distance.
Why is 2 12 the minimum.
Everything can be done at a distance.
Let us recap on the minimum roof pitch required for each type of roofing material.
The roof pitch between 2 12 and 4 12 is considered as a low pitch roof so shingles can be installed in the roof slope between 2 12 and 4 12.
The minimum requirement is 2 12.
All asphalt shingle roofs with a pitch of 4 12 or more have an underlayment of 15 lb.
The minimum slope for an asphalt shingle roof is 2 12.
Minimum roof slopes must be 2 12 16 67 slope for the laminated shingles described in section 5 1 of this report.
Minimum roof slope must be 2 12 16 7 percent except for glenwood shingle that must be installed on roofs with a minimum slope of 3 12 25 percent.
Low slope roofs with gaf asphalt shingles.
What is the minimum pitch slope of an asphalt shingle roof.
6 1 underlayment and ice barriers.
Use only enough nails to hold the roof deck protection in place until covered by shingles.
Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
Considering the roof slope requirement is important.
The first thing to know about your roofing project.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
Shingles of all types need to have a slope to function properly.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
But shingle roofing is not watertight in the sense that standing water or wind driven water on a low slope roof can work its way up between the laps which is the reason for the minimum 2 12 slope.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
Completely cover the deck with two layers of roof deck protection achieve by using an overlap of two plies as detailed on the wrapper instructions.
That works out to about nine degrees if that works better for you.
For example if it is a very low slope water including snowmelt or.
Sections 3 3 and 4 1 2 3.
