These are the weights of typical actual products.
Slate roof weight per square.
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.
Slate thickness and weight chart.
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 pounds per square.
Average weight for one square of 1 4 thick roofing slate is 800lbs.
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.
Weight of roofing materials.
Weight per slate in kilogrammes.
3 16 820 lbs.
500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre.
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.
Pounds per square foot lb ft 2 pounds per square 100 sq.
Asphalt shingles 3 tab or strip 1 95 lbs.
On average slate measured at approximately 1 4 inch thick weighs between 700 and 800 pounds per square.
The weights of other actual products of the same type may vary.