Using Asphalt Shingles on a Low Slope Roof
By: Danny Lipford
I just bought a house with a roof section that has a 1 to 2 inch pitch, should I use rubber roofing or are shingles acceptable? -Mike
The usual slope for asphalt shingles is a 4” or greater rise for every horizontal foot of run. A 3” per foot slope is considered low, but may be acceptable if a double layer of felt is used. Some building codes allow as low as a 2” slope with asphalt shingles if additional steps are taken. For anything less than that, you should use a roofing material specifically made for low slope roofs.
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