Roof Weight Per Square Foot

Aluminum standing seam 70 pounds.

Roof weight per square foot.

If you want to calculate these values by hand use the following formulas. Asphalt shingles 3 tab or strip 1 95 lbs. Here is a list of sample roofing material weights per 100 square feet. The weights of other actual products of the same type may vary.

The weight of truss rafter must be added to calculate the dead load of the roof. Aluminum shingles 45 pounds. Steel standing seam 120 150 pounds. 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.

1 lbm ft2 4 88 kg m2 note. A clay tiled roof may have a dead load. Yet if you do the math and compare asphalt shingles over metal roofing asphalt can weigh 5 lbs. Ft kilograms per square meter kg m 2 source.

A single 26 gauge panel weighs only 0 88 lbs. 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. If you find this website valuable and appreciate it is open and free for everybody please contribute by. A 12 inches metal roofing panel weighs for about 10 lbs.

The load increases with the use of heavier roofing material. Sorry to see that you are blocking ads on the engineering toolbox. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Snow load thickness density the result snow load or the pressure exerted by the snow has the units of kn m or lbs ft.

It is often compared to slope but is not exactly the same. Shingles are sold in bundles that will cover a certain square footage of your roof usually 33 3 square feet. Three tab asphalt shingles weigh 50 80 pounds per bundle. Steel shingles 80 pounds.

Pounds per square foot lb ft 2 pounds per square 100 sq. Outside of the u s a degree angle is typically used. A bundle of three tab asphalt shingles weighs between 60 and 80 pounds but this may vary depending on the quality and type of shingle. 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.

These are the weights of typical actual products. 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. You can also find the load per square meter or square foot of roofing by opening the advanced mode. While most people think about metal roofing is heavier compared to other materials.

Weight of roofing materials. The weight of a bundle of shingles depends on the type of material you re dealing with. Architectural asphalt shingles weigh 65 80 pounds per bundle.