Roof Pitch For Shingles

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

Roof pitch for shingles.

So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Low sloped roof shingle installation. 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. Asphalt shingles continue to be the most widely installed roof covering option in north america.

The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. 5 12 to 12 12 pitch. However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process. 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.

We do install shingles on these in between pitches but special application measures must be taken in this middle ground. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. What is the minimum slope for an asphalt shingle roof.

Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. Use our roof pitch calculator to find the pitch of your roof. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.

These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch. 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. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above.

It is often compared to slope but is not exactly the same. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Pitch angle incline slope they all can be used to refer to the steepness of a roof. Although ceramic tile roofs are expensive they can have a life span of over 100 years.

Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.