Slate Roof Weights

Weight per square metre.

Slate roof weights.

Slate sizes can start as small as 6 12 inches and be as large as 16 24. On average slate measured at approximately 1 4 inch thick weighs between 700 and 800 pounds per square. Some markets such as california and texas prefer a lighter weight slate roof. Pounds per square foot lb ft 2 pounds per square 100 sq.

When ordering a slate s thickness considering the weight should be top priority. Average weight for one square of 1 4 thick roofing slate is 800lbs. 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. Weight of roofing materials.

Weight will very with thickness of the slate. These are the weights of typical actual products. 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. The weights of other actual products of the same type may vary.

500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. Ft kilograms per square meter kg m 2 source.