Slate Roof Weight Per Square Metre

Weight of roofing materials.

Slate roof weight per square metre.

The values shown in the slate coverage chart above are calculated using nominal sizes and incorporate a 5mm jointing gap. How much does slate weigh. That s a great question especially when you are comparing it against other roofing products. 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.

500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. Back in 1926 the commercial standard slate thickness was 3 16. 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.

Here is an example of how the roofing measurement process works on a basic duo pitched roof. A clay tiled roof may have a dead. These are the weights of typical actual products. This table shows the required number of slates per square metre for effective coverage.

Roof span 2 x roof pitch constant for rafter rafter length. The number of roof slates that are needed depends on the slate size and the lap in mm. The load increases with the use of heavier roofing material. 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. Pounds per square foot lb ft 2 pounds per square 100 sq.