Roof Pitch For Shingles

Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.

Roof pitch for shingles.

However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. 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.

So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. 5 12 to 12 12 pitch. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.

For example a 4 12 pitch roof that is 100 square feet. We do install shingles on these in between pitches but special application measures must be taken in this middle ground. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.

Asphalt shingle roofing is designed to shed water that is flowing downward over its surface with each shingle overlapping the one below. The pitch of the roof is the rise over a 12 inch run. Pitch angle incline slope they all can be used to refer to the steepness of a roof. A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options.

Use our roof pitch calculator to find the pitch of your roof. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Low sloped roof shingle installation. Although ceramic tile roofs are expensive they can have a life span of over 100 years.

These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. It is often compared to slope but is not exactly the same.

Asphalt shingles continue to be the most widely installed roof covering option in north america.