Thickness Of Roof

Trusses are not as thick as rafters are because they are engineered from multiple wood members with the ability.

Thickness of roof. The problem with metal roofing gauge is that there is a wide range of tolerances. How thick should a roof be. Manufacturers in the united states use gauge to express the thickness of metal roof panels. Each gauge represents a nominal decimal range.

A good contractor will clarify the client with different ranges of aluminum roofing sheet thickness in the market and their cost while a bad contractor will not do that. Many factors affect thickness. Rafters are the structural beams that support the weight of the roof sheathing and the shingles. 22 gauge is the thickest while 29 gauge is the thinnest.

Low slope or flat roofs are another story. The exact installation thickness can be debated but since west roofing systems has been installing all different thickness levels of foam for more than 40 years we believe this number to be around 2 5 inches. 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. The minimum plywood for roofing plywood is layers of wood.

Plywood is made with three or more layers of thin wood glued together with the grain. Manufacturers express the thickness of metal panels as their gauge with 22 gauge being the thickest and 29 gauge the thinnest of traditionally sold metal roof and wall panels. The thickness of aluminum roofing sheet in most nigeria market ranges from 0 7mm to 1mm thickness the thicker the roofing sheet the costlier it will be. 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 thickness of plywood used for roof decking depends on the roof slope the spacing of. The choices are more plentiful for sloped roofs. A low slope roof is anything under 2 inches of fall per foot.