Using felt tiles is the next step up in quality.
Minimum roof pitch for felt shingles.
Asphalt shingles require a minimum roof pitch of 2 12 or greater.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
Asphalt felt paper that is tacked to the roof sheathing.
18 43 asphalt shingles with special underlayment requirements 2 in 12.
Minimum required slope x in 12 minimum required slope degrees asphalt shingles.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
It is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles.
In 12 0 25 in 12 1 19 built up roof coal tar pitch.
Rough cost m 2.
Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.
The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span.
Installation on roof slopes below a 2 in 12 pitch is not recommended at all.
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.
All asphalt shingle roofs with a pitch of 4 12 or more have an underlayment of 15 lb.
Shingles of all types need to have a slope to function properly.
Roofing shingles are laid starting at the bottom of the roof.
Metal roof shingles require a minimum roof pitch of 3 12 or greater.
Felt tiles or roofing shingles.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
That works out to about nine degrees if that works better for you.
Minimum required roof slope for roofing materials.
The minimum requirement is 2 12.
What is the minimum pitch slope of an asphalt shingle roof.
Asphalt shingle manufacturers will warrant shingles installed on roof slopes as low as 2 12 when these special installation procedures are followed.
9 46 built up roof asphalt.
The shingles overlap each other by about 150 mm at the ridge a capping piece is used.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
Let us recap on the minimum roof pitch required for each type of roofing material.
For the rest of the roof slope the felt underlayment must be installed with a 19 inch top lap and a 12 inch side lap providing double coverage of the felt layer.
