Minimum Roof Slope Alberta

Where the roof slope is less than 1 in 6 or in roofs that are constructed with roof joists the unobstructed vent area shall be not less than 1 150 of the insulated ceiling area.

Minimum roof slope alberta.

However you can only use this pitch with built up roofing or specialized synthetic roofing. The minimum roof slope permitted for issuance of an asphalt shingle roofing warranty certificate is 4 12 1 3. The values given here. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.

The profile refers to the shape the metal sheets take when they bend to. The minimum roof slope permitted for issuance of an asphalt shingle roofing warranty certificate is 4 12 1 3. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. Let us recap on the minimum roof pitch required for each type of roofing material.

Division b part 5 page 5 11 the national building code now dictates that all flat roof deck and balcony areas are considered roofs and when specifying a pvc. Minimum pitch for metal roof. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Asphalt shingles require a minimum roof pitch of 2 12 or greater.

Extending from the edge of the roof a minimum of 900 mm up the roof slope to a line not less than 300 mm inside the inner. The minimum roof slope for metal roofs is dependent upon the roof profile. Asphalt shingles continue to be the most widely installed roof covering option in north america. Use a membrane roofing system for roof slopes less than 4 12 1 3.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. The alberta building code. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Cgsb ca cgsb 37 54 polyvinyl chloride roofing and waterproofing membrane national building code of canada 2005. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.