Asphalt shingles should never be applied to roof slopes below 2 12 2 of vertical rise for every 12 of horizontal run or 9 5.
Roof pitch for asphalt shingles.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
Asphalt shingle roofing is designed to shed water that is flowing downward over its surface with each shingle overlapping the one below.
Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.
We can even help you find a professional to install it.
What is the roof pitch for asphalt shingles on a house.
Fortunately the requirements are quite accommodating.
Experience the total owens corning roofing system and high quality roofing shingles.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch.
Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.
What is the minimum slope for an asphalt shingle roof.
Let owens corning help you determine when it is time for a new roof and then let us help you choose the shingles for your roof that are right for you.
Metal roof shingles require a minimum roof pitch of 3 12 or greater.
What is the minimum pitch slope of an asphalt shingle roof.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
If you re having asphalt shingles put on your roof you will have to have a minimum slope.
Installation on roof slopes below a 2 in 12 pitch is not recommended at all.
Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.
Let us recap on the minimum roof pitch required for each type of roofing material.
That works out to about nine degrees if that works better for you.
The roofing materials most often used for these pitches include asphalt composite shingles.
Traditional 3 tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches.
The asphalt shingle manufactures recommend that you install asphalt shingles on a recommended minimum of 4 in 12 or greater however most manufactures will warrant their shingles down to a 2 in 12 pitch if the recommended installation method is used.
For individuals who are not well versed with roofing and architecture the slant of a roof seems like a trivial matter to worry about but it does play an important role in planning out and installing the right material and parts for your roof.
So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run.
They won t be appropriate for all roofs.
Shingles of all types need to have a slope to function properly.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.
Asphalt shingles do require that you have a minimum pitch to your roof.
Additional underlayment protection with special application methods are required when asphalt shingles are installed on a low slope roof following the manufacturer s application instructions.
Asphalt shingles require a minimum roof pitch of 2 12 or greater.
