Minimum Roof Pitch For Standard Shingles

Traditional 3 tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches.

Minimum roof pitch for standard shingles.

With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. Asphalt felt paper that is tacked to the roof sheathing. The standard of lower pitch actually ranges between 1 12 to 5 12. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

That works out to about nine degrees if that works better for you. All asphalt shingle roofs with a pitch of 4 12 or more have an underlayment of 15 lb. The metal roof minimum slope doesn t stray far from other building with different material. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.

However you can only use this pitch with built up roofing or specialized synthetic roofing. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Asphalt shingles require a minimum roof pitch of 2 12 or greater. 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. Metal roof shingles require a minimum roof pitch of 3 12 or greater.

The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. You could also opt for a pvc flat roofing membrane. The roofing materials most often used for these pitches include asphalt composite shingles. There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12.

Shingles of all types need to have a slope to function properly. The minimum requirement is 2 12.