Slate Roof Weights

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.

Slate roof weights.

Average weight for one square of 1 4 thick roofing slate is 800lbs. Weight per square metre. These are the weights of typical actual products. Per square smaller roofing slates actually weigh more than larger slates and come in at around 800lbs square while larger slates 12 24 weigh about 700lbs square.

On average slate measured at approximately 1 4 inch thick weighs between 700 and 800 pounds per square. Asphalt shingles 3 tab or strip 1 95 lbs. Slate sizes can start as small as 6 12 inches and be as large as 16 24. Ft kilograms per square meter kg m 2 source.

The weights of other actual products of the same type may vary. Not only for the building s structural integrity but shipping costs labour installation costs and lead times will play a big factor. 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.

Weight of roofing materials. Weight will very with thickness of the slate.