Shingle Roof Slope

The roof pitch between 2 12 and 4 12 is considered as a low pitch roof so shingles can be installed in the roof slope between 2 12 and 4 12.

Shingle roof slope.

Considering the roof slope requirement is important. Shingles of all types need to have a slope to function properly. Asphalt shingles continue to be the most widely installed roof covering option in north america. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The minimum requirement is 2 12. For example if it is a very low slope water including snowmelt or rainwater drains slowly and this increases the chances of. Why is 2 12 the minimum.

This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. What is the minimum slope for an asphalt shingle roof. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Metal roof shingles can only be installed on roof slopes of 3 12 or greater 25 slope. That works out to about nine degrees if that works better for you.