Minimum Pitch For Shingle Roof

Determine the minimum slope of the roof based on the roofing material.

Minimum pitch for shingle roof.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. There is no standard universal roof pitch. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. What is the minimum pitch slope of an asphalt shingle roof.

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. In the usa the range of standard pitches is anywhere between 4 12 and 9 12. In the uk the typical house has a pitch between 40 50 although 45 should be avoided.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. For pitches of 2 5 12 up to 4 12 the roof requires double underlayment. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. Divide the results by the number of 12 inch segments in your level.

That works out to about nine degrees if that works better for you. The minimum requirement is 2 12. Slopes above 19 12 are not recommended since tiles on very steep roofs can rattle. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

For example if you used a 24 inch level and your measurement was 12 inches the pitch in your roof is 6 in 12. The minimum pitch for a. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. You can also estimate a roof pitch by eyeballing it from the ground from the gable side with a level and ruler.

What is the minimum slope for an asphalt shingle roof. Metal roof shingles require a minimum roof pitch of 3 12 or greater. Shingles of all types need to have a slope to function properly. Roof pitch varies depending on culture climate style and available materials.

Asphalt shingles continue to be the most widely installed roof covering option in north america. Let us recap on the minimum roof pitch required for each type of roofing material.