Minimum Roof Slope Bc

Notes to table 9 26 3 1.

Minimum roof slope bc.

However below 4 12 a superior underlay is required. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. Type of roofing minimum slope maximum slope asphalt shingles low slope application 1 in 6 no limit.

2 see sentence 9 26 3 1 3. Cedar is available down to 4 12 for shakes and 3 12 for shingles. Asphalt shingles can be applied as low as 2 12. Minimum pitch for metal roof.

2 asphalt and gravel or coal tar and gravel roofs may be constructed with lower slopes than required in sentence 1 when effective drainage is provided by roof drains located at the lowest points on the roofs. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The code provides minimum slopes for various types of roofing in table 9 27 3 a.

3 profiled metal roof cladding systems specifically designed for low slope applications are. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. Asphalt shingles continue to be the most widely installed roof covering option in north america. Steep pitch it is difficult to safely walk on a roof when the slope is steeper than 7 12.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The values given here. However you can only use this pitch with built up roofing or specialized synthetic roofing.

Roof slope to a point equal in height to the flashing on the masonry but not less than 1 5 times the shingle exposure. There are fewer options when the roof slope approaches 2 12. The profile refers to the shape the metal sheets take when they bend to. The minimum roof slope for metal roofs is dependent upon the roof profile.

It further gives installation methods which it considers will ensure acceptable performance at these minimum slopes. 1 see sentence 9 26 3 1 2. British columbia building code 2018 division b 9 26 2 4.