The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
2 12 roof pitch options.
Roof pitch designations are comprised of two numbers indicating a ratio.
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There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12.
You could also opt for a pvc flat roofing membrane.
Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.
The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.
Pole barn design options construction calculators charts cubic yard calculator truss calculator rafter calculator squaring building lines example.
Pitch is the term used to describe the angle slope or slant of your roof.
I ve been reading and reading but haven t found a good answer.
A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options.
So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
What is the best value price compared to life compared to ease of installation material to go on top of shingle on a 2 12 pitched roof that is also comparatively easy for a handy man homeowner to install considering in order of importance price vs expected life time vs ease of installation.
Asphalt shingles continue to be the most widely installed roof covering option in north america.