Minimum Roof Pitch For Cedar Shingles

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

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. 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. Asphalt shingles require a minimum roof pitch of 2 12 or greater. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Let us recap on the minimum roof pitch required for each type of roofing material. Your home s roof pitch is the angle slope or slant of your roof. Shingles of all types need to have a slope to function properly. The roof s pitch helps professionals estimate the number of materials needed to complete the roofing and decide on the best roofing materials.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. The minimum roof pitch for shingles and shakes is 14 degrees. Asphalt shingles continue to be the most widely installed roof covering option in north america. 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. That works out to about nine degrees if that works better for you. The minimum requirement is 2 12. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span.

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. What is the minimum pitch slope of an asphalt shingle roof. 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. At these pitches there is a possibility of some water penetration.

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