Slate Roof Weight Per Square Metre

These are the weights of typical actual products.

Slate roof weight per square metre. 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. The load increases with the use of heavier roofing material. Asphalt shingles 3 tab or strip 1 95 lbs. The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot.

Roofing slate created by nature over 500 million years ago has been used as a roof covering for more than a thousand years. Here is an example of how the roofing measurement process works on a basic duo pitched roof. Weight of roofing materials. The values shown in the slate coverage chart above are calculated using nominal sizes and incorporate a 5mm jointing gap.

A clay tiled roof may have a dead. This table shows the required number of slates per square metre for effective coverage. Back in 1926 the commercial standard slate thickness was 3 16. The number of roof slates that are needed depends on the slate size and the lap in mm.

That s a great question especially when you are comparing it against other roofing products. Pounds per square foot lb ft 2 pounds per square 100 sq. The weights of other actual products of the same type may vary. 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.

Roof span 2 x roof pitch constant for rafter rafter length. Ft kilograms per square meter kg m 2 source.