Minimum required roof slope for roofing materials.
Minimum pitch for shingle roof tile.
The minimum requirement is 2 12.
9 46 built up roof asphalt.
That works out to about nine degrees if that works better for you.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
Click through to marley above for more on industry best practices.
The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span.
However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process.
18 43 asphalt shingles with special underlayment requirements 2 in 12.
Minimum required slope x in 12 minimum required slope degrees asphalt shingles.
Roofing material or system.
What is the minimum pitch slope of an asphalt shingle roof.