Minimum Roof Slope Bc

Steep pitch it is difficult to safely walk on a roof when the slope is steeper than 7 12.

Minimum roof slope bc.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Asphalt shingles continue to be the most widely installed roof covering option in north america. The values given here. Minimum pitch for metal roof.

However below 4 12 a superior underlay is required. However you can only use this pitch with built up roofing or specialized synthetic roofing. 1 see sentence 9 26 3 1 2. The minimum roof slope for metal roofs is dependent upon the roof profile.

Type of roofing minimum slope maximum slope asphalt shingles low slope application 1 in 6 no limit. 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. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The profile refers to the shape the metal sheets take when they bend to. Asphalt shingles can be applied as low as 2 12. Roof slope to a point equal in height to the flashing on the masonry but not less than 1 5 times the shingle exposure.

British columbia building code 2018 division b 9 26 2 4. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. Cedar is available down to 4 12 for shakes and 3 12 for shingles. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. There are fewer options when the roof slope approaches 2 12. It further gives installation methods which it considers will ensure acceptable performance at these minimum slopes. Notes to table 9 26 3 1.

There are no minimum slopes given for gutters and this becomes a separate issue. 2 see sentence 9 26 3 1 3. The code provides minimum slopes for various types of roofing in table 9 27 3 a.