Slate Roof Weight Per Square Metre

Roof span 2 x roof pitch constant for rafter rafter length.

Slate roof weight per square metre.

That s a great question especially when you are comparing it against other roofing products. A clay tiled roof may have a dead. Here is an example of how the roofing measurement process works on a basic duo pitched roof. The weights of other actual products of the same type may vary.

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. Asphalt shingles 3 tab or strip 1 95 lbs. 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. These are the weights of typical actual products.

This table shows the required number of slates per square metre for effective coverage. The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot. The number of roof slates that are needed depends on the slate size and the lap in mm. Back in 1926 the commercial standard slate thickness was 3 16.

Pounds per square foot lb ft 2 pounds per square 100 sq. Roofing slate created by nature over 500 million years ago has been used as a roof covering for more than a thousand years. The values shown in the slate coverage chart above are calculated using nominal sizes and incorporate a 5mm jointing gap. Ft kilograms per square meter kg m 2 source.

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. Weight of roofing materials.