Slate Roof Weight Per Square Metre

Pounds per square foot lb ft 2 pounds per square 100 sq.

Slate roof weight per square metre.

This table shows the required number of slates per square metre for effective coverage. To calculate the weight per square metre simply multiply the weight per slate given below by the number of slates per square metre for the same slate listed above. The weights of other actual products of the same type may vary. The number of roof slates that are needed depends on the slate size and the lap in mm.

A clay tiled roof may have a dead. Back in 1926 the commercial standard slate thickness was 3 16. Roof span 2 x roof pitch constant for rafter rafter length. The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot.

If the roof pitch is 35 the roof span is 6 5m wide and the roof length is 12 6m using the reference guide graphic above the calculation for the slope would look like this. How much does slate weigh. These are the weights of typical actual products. Ft kilograms per square meter kg m 2 source.

500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. The load increases with the use of heavier roofing material. Roofing slate created by nature over 500 million years ago has been used as a roof covering for more than a thousand years. Felt tar and slag roofing 5 ply 5 3 lb m ft 2 25 9 kg m 2 ceramic slate 5 8 lb m ft 2 28 3 kg m 2 reconstituted slate 4 4 lb m ft 2 21 5 kg m 2 clay tile 10 8 lb m ft 2 52 7 kg m 2 asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 concrete tile 9 3 lb m ft 2 45 4 kg m 2 slate 1 4 to 3 16 thick 9 1 lb m ft 2 44 4 kg m 2.

That s a great question especially when you are comparing it against other roofing products. Here is an example of how the roofing measurement process works on a basic duo pitched roof.