Weight will very with thickness of the slate.
Slate roof weight per square.
Weight per slate in kilogrammes.
Exposure pieces bundle bundles square weight square nails required straight 6 12 or greater 8 22 6 6 275 lbs 291 sq straight 6 12 or greater 7 5 22 7 1 294 lbs 313 sq.
These are the weights of typical actual products.
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.
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.
Slate thickness and weight chart.
Weight of roofing materials.
Pounds per square foot lb ft 2 pounds per square 100 sq.
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.
Weight pounds per square.
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.
Asphalt shingles 3 tab or strip 1 95 lbs.
Davinci slate single width slate widths 12 length 18 thickness at butt 1 2 thickness at tip 1 8 field shingles per roofing square coursing roof pitch max.