Roof Board Weight

It s light weight provides ease of handling.

Roof board weight.

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

When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. 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. 1 4 dens deck roof board. 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.

R values 28 tested in accordance with astm c518 spannings. Securock roof boards are a portfolio of high performance roof boards to meet the needs of your low slope commercial roofing project. 1 4 spans flute widths up to 2 5 8. Densdeck roof boards can replace any generic type x gypsum board in any roof assembly in the ul fire resistance directory under the prefix.

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. 0 80 mm steel sheet. Rigid roof insulation board. 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.

2 tested in accordance with astm c473 method b. Actual weight may vary based on manufacturing location and other factors. Sitka spruce douglas fir and southern yellow pine. The greatest risks to roofs aren t always seen.

3 tested in accordance with astm c518 heat flow meter.