While most people think about metal roofing is heavier compared to other materials.
Roof weight per square foot.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
Roofing asphalt shingles 2 5psf wood shakes 3 0psf roll roofing 1 0psf asphalt shingles approx 1 4 2 0psf cement asbestos shingles 3 8 4 0psf clay tile add 10psf for mortar 9 0psf ludowici 10 0psf roman 12 0psf slate 1 4 10 0psf spanish 19 0psf wood 1 3 0psf cement tile add 6psf for mortar 10 0psf.
Pounds per square foot lb ft 2 pounds per square 100 sq.
Asphalt shingles 3 tab or strip 1 95 lbs.
The load increases with the use of heavier roofing material.
1 lbm ft2 4 88 kg m2 note.
Steel shingles 80 pounds.
A single 26 gauge panel weighs only 0 88 lbs.
These are the weights of typical actual products.
Generally three bundles of shingles are enough to cover 1 square of roof 100 square feet which can weigh anywhere from 180 to 240 pounds.
B deck is 1 1 2 deep and is available in galvanized and prime painted finishes.
In fact with many heavy roofs fire fighters will not go inside the home to fight the fire if it has avery heavy roof on top.
Verco hsb 36 stands for high shear b deck 36 wide.
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Ft kilograms per square meter kg m 2 source.
Aluminum shingles 45 pounds.
A 12 inches metal roofing panel weighs for about 10 lbs.
Weight of roofing materials.
You can also find the load per square meter or square foot of roofing by opening the advanced mode.
Snow load thickness density the result snow load or the pressure exerted by the snow has the units of kn m or lbs ft.
Yet if you do the math and compare asphalt shingles over metal roofing asphalt can weigh 5 lbs.
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The weight of truss rafter must be added to calculate the dead load of the roof.
Per square foot a 4 12 lbs.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
Here is a list of sample roofing material weights per 100 square feet.
Steel standing seam 120 150 pounds.
B deck is strong light weight economical and easy to install and is the most common structural roof deck.
The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot.
Aluminum standing seam 70 pounds.
If you want to calculate these values by hand use the following formulas.
The weights of other actual products of the same type may vary.
A clay tiled roof may have a dead load.
It is often compared to slope but is not exactly the same.
A low weight roof also lessens the risk of a roof collapse if there is a fire inside of the home which reaches the attic.
