Slate Roof Weight Psf

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.

Slate roof weight psf.

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. Slate roofs national slate association 1926. 500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. If the slate tiles are 3 8 thick they will weigh around 5 5 lbs per sq ft.

3 5 4 5 pounds per square foot clay or concrete tile. The weight of slate tiles will of course depend on the thickness. Roofing asphalt shingles 2 5psf wood shakes 3 0psf roll roofing 1 0psf asphalt shingles approx 1 4 2 0psf cement asbestos shingles 3 8 4 0psf clay tile add 10psf for mortar 9 0psf ludowici 10 0psf roman 12 0psf slate 1 4 10 0psf spanish 19 0psf wood 1 3 0psf cement tile add 6psf for mortar 10 0psf. 3 5 5 pounds per square foot wood shingles shakes.

Slate roofs national slate association 1926. 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. Slate roofs national slate association 1926. 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.

5 5 10 pounds per square foot. How much a slate roof should cost. How much does slate weigh. Slate roofing 1 4 inch slates.

2 3 5 pounds per square foot textured asphalt shingle. Slate roofing 3 8 inch slates. The weight of truss rafter must be added to calculate the dead load of the roof. Installing a natural slate roof starts around 9 10 or more a square foot for a basic roof up to 30 40 or more a square foot depending on the type of slate used the installation pattern some methods use more slate per square foot the design of the.

Slate roofing 3 16 inch slates. That s a great question especially when you are comparing it against other roofing products. Back in 1926 the commercial standard slate thickness was 3 16. Roofing slate created by nature over 500 million years ago has been used as a roof covering for more than a thousand years.

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.