When ordering a slate s thickness considering the weight should be top priority.
Slate roof weights.
Average weight for one square of 1 4 thick roofing slate is 800lbs.
These are the weights of typical actual products.
Some markets such as california and texas prefer a lighter weight slate roof.
Weight per square metre.
Pounds per square foot lb ft 2 pounds per square 100 sq.
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.
Not only for the building s structural integrity but shipping costs labour installation costs and lead times will play a big factor.
Ft kilograms per square meter kg m 2 source.
The weights of other actual products of the same type may vary.
On average slate measured at approximately 1 4 inch thick weighs between 700 and 800 pounds per square.
Slate sizes can start as small as 6 12 inches and be as large as 16 24.
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.
Weight will very with thickness of the slate.