Slate Roof Weight Psf

Slate roofing 3 8 inch slates.

Slate roof weight psf. 500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. Consequently not all homes have the structural support necessary to take the weight of a slate roof and often additional reinforcement needs to be installed. Reduces weight to under six pounds per square foot. Spray polyurethane foam closed cell.

Slate roofing 1 4 inch slates. Slatetec says that their system will reduce roof weight by 35 40. Weight per slate in kilogrammes. 1 2 3 4.

On a roof with a slope greater than 4 to 12 the live load limit is typically adjusted downward from 20 psf to 15 psf to allow for the relatively greater dead load on the steeper roof. Slate roofs national slate association 1926. Reduces slate weight by up to 40. One of the drawbacks of slate for some homeowners is the heavy weight of slate roofing tiles which can be between 800 1 500 pounds per square 100 square feet.

For 1 2 slate the figure is around 7 3 lbs per sq ft and is approximately 11 lbs per sq ft for 3 4. That s a great question especially when you are comparing it against other roofing products. 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. Slatetec uses today s technology to reduce the weight of genuine slate roofing.

S1 rated greenstone slate overall roof cost reduction. Random widths color blends drop downs and staggers. All the traditional slate roof options are available including. Back in 1926 the commercial standard slate thickness was 3 16.

Slate 1 4 to 3 16 thick 9 1 lb m ft 2 44 4 kg m 2 slate 3 8 thick 12 8 lb m ft 2 62 5 kg m 2 slate 1 2 thick 18 8 lb m ft 2 91 8 kg m 2. Slate roofing 3 4 inch slates. How much does slate weigh. Slate 1 4 10 0psf spanish 19 0psf wood 1 3 0psf cement tile add 6psf for mortar 10 0psf corrugated asbestos cement 4 0psf composition 235 lb shingle paper 5 0psf 3 ply ready roofing 1 0psf 2 15 lb 1 90lb 1 7psf 3 15 lb 1 90lb 2 2psf 3 ply gravel 5 6psf 4 ply gravel 6 0psf 5 ply gravel 6 5psf.

Roofing slate created by nature over 500 million years ago has been used as a roof covering for more than a thousand years. Slate roofs national slate association 1926. If the slate tiles are 3 8 thick they will weigh around 5 5 lbs per sq ft. Very similar to traditional installation techniques but with less slate overlap.

When working out the upper limit that the slate floor will weigh ensure that you always use the maximum thickness quoted when given nominal dimensions of the tiles. The benefits of slatetec. Slate roofs national slate association 1926. A slatetec slate roof installation reduces.

Total roof weight to less than 6 lbs per sq.