Roof Pitch Regulations

Employers must provide the right equipment employers must provide fall protection and the right equipment for the.

Roof pitch regulations.

But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. For homes with a single predominant roofline the pitch of the roof must be at least five feet rise for every twelve feet of run. A qualified roofing contractor will be able to advise on this but here are some of the main guidelines. The wall plate is a strip of timber which is bedded in mortar on top of the wall and which evenly distributes the load.

We take the roof pitch rise of 7 inches of rise per foot and multiply that by 4 feet of horizontal run to high point which equals 28 inches of rise to the highest point within 10 feet of the chimney penetration. For closed valleys valley covered with shingles. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. Our roof pitch is 7 12 and the roof penetration will be 4 feet away from ridge of the roof.

The bottom must be 18 inches and the top layer a minimum of 36 inches wide. The sloping timbers are known as rafters and are supported at the top by building them into the solid wall not. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. Steep roof above 4 12 slope 29 cfr 1926 501 b 11.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. Mortar cannot actually bond the timber to the wall. Low slope roof 4 12 slope or less 29 cfr 1926 501 b 10.

With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 200 for slate roofs.