Roof Thickness For House

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

Roof thickness for house. Sheathing should be a minimum of 19 32 inch thick. How thick should a roof be. With that in mind i ve seen slabs as thick as 16 18 due to column spacing. For example we build residential in flat plate concrete which will typically have a column spacing of 20 oc and a slab thickness of 8 typ.

Trusses are not as thick as rafters are because they are engineered from multiple wood members with the ability. The typical thickness range for sheathing is 3 8 to 3 4 inch. Studied at srm institute of science and technology. Rafters are the structural beams that support the weight of the roof sheathing and the shingles.

The thickness of plywood used for roof decking depends on the roof slope the spacing of. The problem with metal roofing gauge is that there is a wide range of tolerances. The following tools estimate the area of a roof as well as the amount of materials necessary to construct a roof of a given area. The answer depends mostly on how far apart the rafters are and the roof loads which vary based on the pitch of your roof.

Many factors affect thickness. Answered october 6 2017. For example one company might sell a product as being 24 gauge but in reality the thickness of the metal could vary from 0 018 to 0 0335 based upon exactly how that company looks at things and how big of a tolerance they allow for. The min thickness of the roof slab should be 6 inches and maximum it can go up to 13 14 inches for span up to 7 m long.

Commercial is typically steel w a composite deck so you ll have a 5 6 slab sitting on top of steel beams. Because 22 24 or 26 gauge sheeting is thicker and will therefore remain more structurally sound over a longer span than a 29 gauge the building needs fewer supports which saves your customers money. The most common scenario is a home that has rafters set approximately 16 inches apart. The minimum plywood for roofing plywood is layers of wood.

Post frames generally lack structural sheathing so the roof and wall panels must span between the supporting trusses or purlins.