Roof Board Weight

The weight of roofing constructions above the truss rafter may be estimated with the calculator below.

Roof board weight.

3 tested in accordance with astm c518 heat flow meter. Sitka spruce douglas fir and southern yellow pine. Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to 1 2 thick duraboard an expanded perlite mineral aggregate board on one side and a fiber glass reinforced facer on the other. Each type of roof board is uniquely designed to help protect your roof when used as a fire barrier thermal barrier coverboard recoverboard or parapet wall.

0 80 mm steel sheet. A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. Securock roof boards are a portfolio of high performance roof boards to meet the needs of your low slope commercial roofing project. Densdeck roof boards can replace any generic type x gypsum board in any roof assembly in the ul fire resistance directory under the prefix.

Actual weight may vary based on manufacturing location and other factors. None asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 asphalt shingle or asphalt fiberglass composite shingle 2 7 lb m ft 2 13 2 kg m 2. Oriented strand board osb com ply. 1 4 dens deck roof board.

It s light weight provides ease of handling. Densdeck roof boards are utilized in a wide variety of roofing systems for new and re roofing applications as gypsum roof cover boards and thermal barriers. Typical physical properties test astm densdeck roof board 6 4 mm 12 7 mm 5 8 15 9 mm strength compressive strength psi kpa nom c 473 900 6 205 flexural strength lb parallel min c 473 40 80 100 bending radius ft m max na 5 1 5 8 2 4 12 3 6 moisture. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.

2 tested in accordance with astm c473 method b. R values 28 tested in accordance with astm c518 spannings. The table provides the weight of lumber produced from three commonly used tree species. The following table provides the approximate weight dead load self weight per linear foot of the various sizes of dimensional lumber also called structural lumber or finished lumber used in building construction in the us.

The greatest risks to roofs aren t always seen.