Minimum Roof Slope Bc

The code provides minimum slopes for various types of roofing in table 9 27 3 a.

Minimum roof slope bc.

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. There are no minimum slopes given for gutters and this becomes a separate issue. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. 1 see sentence 9 26 3 1 2.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. There are fewer options when the roof slope approaches 2 12. The minimum roof slope for metal roofs is dependent upon the roof profile. However you can only use this pitch with built up roofing or specialized synthetic roofing.

Type of roofing minimum slope maximum slope asphalt shingles low slope application 1 in 6 no limit. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Notes to table 9 26 3 1. It further gives installation methods which it considers will ensure acceptable performance at these minimum slopes.

Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. 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. 3 profiled metal roof cladding systems specifically designed for low slope applications are.

The profile refers to the shape the metal sheets take when they bend to. The values given here. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. Minimum pitch for metal roof.

Roof slope to a point equal in height to the flashing on the masonry but not less than 1 5 times the shingle exposure. Asphalt shingles can be applied as low as 2 12. British columbia building code 2018 division b 9 26 2 4. Asphalt shingles continue to be the most widely installed roof covering option in north america.

However below 4 12 a superior underlay is required. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.