Slate Roof Weight Per Square Metre

A clay tiled roof may have a dead.

Slate roof weight per square metre.

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. This table shows the required number of slates per square metre for effective coverage.

500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. Weight of roofing materials. The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot. That s a great question especially when you are comparing it against other roofing products.

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. The weights of other actual products of the same type may vary. Back in 1926 the commercial standard slate thickness was 3 16.

How much does slate weigh. These are the weights of typical actual products. The number of roof slates that are needed depends on the slate size and the lap in mm. 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.

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