Minimum Roof Pitch For Cedar Shingles

When it comes to slope for cedar roofs pitch is determined by how many inches the slope rises every 12 horizontal inches.

Minimum roof pitch for cedar shingles.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. While a low pitch roof may not show the aesthetic qualities of cedar shingles to full advantage they provide a lightweight durable solution where a pitched roof is required. It is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles. Let us recap on the minimum roof pitch required for each type of roofing material.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Asphalt shingles continue to be the most widely installed roof covering option in north america. The minimum roof pitch for shingles and shakes is 14 degrees. 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.

Shingles of all types need to have a slope to function properly. At these pitches there is a possibility of some water penetration. At these low pitches 14 22 degrees care must be taken and a water impermeable vapour permeable underlay must be used underneath with a ventilated space between the membrane and the shingles. The roof s pitch helps professionals estimate the number of materials needed to complete the roofing and decide on the best roofing materials.

The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. Asphalt shingles require a minimum roof pitch of 2 12 or greater. These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. What is the minimum pitch slope of an asphalt shingle roof. The minimum requirement is 2 12. To achieve a sound watertight roof the gauge of the shingle assuming the standard 5x or 400mm shingle must be closed to 95mm giving a 4 ply roof.

The roofing materials most often used for these pitches include asphalt composite shingles.