Thirty pound felt is more resistant to damage during installation of the roof covering material and will protect the roof longer if it should somehow become exposed to weather.
15 lb felt roof overlap.
Felt underlayment for all roof installations or replacements.
Of coverage for residential and commercial roofing projects.
Many codes municipalities and manufacturers require at least a 15 lb.
As you work the paper can be tacked down in the center so it won t blow away.
Unrolled length that combine to provide over 430 sq.
Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope.
Product may vary by store.
At s a roofing we disagree with this statement.
For residential and commercial use.
Width and a 144 ft.
Fifteen pound felt has a perm rating of about 5 although this number can rise in high humidity conditions.
The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below.
The roofing felt should be applied in layers that overlap.
Felt has a 36 in.
15 asphalt felt roofing underlayment provides an extra layer of protection between your shingles and your roof deck.
However you must allow for overlaps on joints.
In my opinion felt paper is a vapor barrier plus keeps the oils in the shingles from leaching out and into the wood substrate i e.
Convert the area from inches to feet prior to purchasing your felt.
It s available in two thicknesses.
Purchase enough felt to cover your roof s area.
A conventional roll of felt is enough for 432 square feet.
One roll of conventional 15 felt covers 432 square feet 40 1 m 2.
Roofing felt is required to overlap 2 inches over the lower felt course.
This underlayment features excellent asphalt saturation for effective waterproofing.
Buy the roof felt.
15 felt type construction helps provide an extra layer of protection between your shingles and your roof deck not included heavy duty design lays flat to help minimize wrinkling asphalt saturation to help improve waterproofing ability to help prevent wind driven rain and water from other sources from infiltrating under your shingles and.
In most cases this will leave 400 square feet 37 m 2 of net coverage per 1 roll.
This gardner asphalt 15 432 sq.
Since you will have overlap between rows this works out to a total coverage area of 400 square feet the dimensions of a 20 x 20 roof.
