Roof Pitch Required For Shingles

Low sloped roof shingle installation.

Roof pitch required for shingles.

Flat and nearly flat roofs a pitch of 1 in 12 or 2 in 12 cannot be covered with shingles or shakes of any material since there is not enough angle to combat the danger of blow off. We do install shingles on these in between pitches but special application measures must be taken in this middle ground. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. The roof deck should be sound and level before laying the underlayment.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. If 4 12 and above is normal and 2 12 is minimum what about properties with roofs in between the two such as a 3 12 pitched roof. The minimum pitch for a. Asphalt shingles continue to be the most widely installed roof covering option in north america.

The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. Determine the minimum slope of the roof based on the roofing material. How roof pitch determines suitable roofing systems. However shingles are packaged in a way that they are light enough for the average person to carry around.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. The shingle bundles will be plastic or paper wrapped bundles that are made to be light enough for a single person to carry. Fifteen pound or heavier felt underlayment is required by code in some areas.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. A square of shingles will be the amount needed to cover an area of 100 square feet. What is the minimum slope for an asphalt shingle roof. Asphalt shingles require a minimum roof pitch of 2 12 or greater.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Let us recap on the minimum roof pitch required for each type of roofing material. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.