A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.
Roof picth 2 12.
Image 1 12 to 12 12 roof pitch 7 12 pitch.
2 12 is very low for composite shingles.
Ice and water shield as an underlayment.
We included a roof pitch chart below the 7 12 example image and the calculator below that.
2 12 roof pitch angle 9 46 degrees.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
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.
About 6 months later some of the plywood will be saturated.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.
What is the minimum slope for an asphalt shingle roof.
Roof pitch degree table.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
If this isn t practical then perform the same measurement on the underside of the roof.
To be honest the shingles and double felt will work about as well as leaving just the plywood to fight the elements.