What is the minimum pitch slope of an asphalt shingle roof.
Roof pitch for asphalt shingles.
Asphalt shingles do require that you have a minimum pitch to your roof.
Fortunately the requirements are quite accommodating.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
Asphalt shingles require a minimum roof pitch of 2 12 or greater.
What is the minimum slope for an asphalt shingle 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.
Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.
Roof pitch is another term for the inclination of your roof and how steep it is.
Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.
So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
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.
Let us recap on the minimum roof pitch required for each type of roofing material.
Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.
Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
There are plenty of other options however for flat and nearly.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
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.
They won t be appropriate for all roofs.
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.
The roofing materials most often used for these pitches include asphalt composite shingles.
These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch.
That works out to about nine degrees if that works better for you.
Shingles of all types need to have a slope to function properly.
Asphalt shingle roofing is designed to shed water that is flowing downward over its surface with each shingle overlapping the one below.
The minimum requirement is 2 12.
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.
Experience the total owens corning roofing system and high quality roofing shingles.
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.
Installation on roof slopes below a 2 in 12 pitch is not recommended at all.
We can even help you find a professional to install it.
