Roof Slate Thickness

Schedule of standard sizes slate size.

Roof slate thickness.

Estimated weight is 800 pounds per square. The slate lays very unevenly on the purlins. Nominal 3 8 inch 10 mm to 1 2 inch 13 mm 4. Nominal 1 4 inch 7 mm to 3 8 inch 10 mm 3.

3 16 to 1 4 historically known as commercial thickness but currently limited in production. While some quarries may split and sort to slightly different thickness groupings most roofing slate is grouped into the following thickness categories. This class 4 hail rated slate weighs 1800 to 2200 lbs per square. Measuring 1 2 to 3 4 in thickness they bring a more robust texture to the roof as well as additional strength.

When installed however the shingles overlap doubling the thickness. North country unfading black slate 3 16. The most common thickness is and weighs approximately 935 pounds per square when installed with a 3 headlap. Some quarries such as glendyne which produces our north country unfading black slate can be split consistently and sold 3 16 3 8 and.

However the initial cost of slate shingles can be higher than other types of roof covering as can repairs and maintenance. Slate roof tiles are also available in a range of thicknesses from 3 16 to 1 with the standard thickness being 3 8. Slate roofs are also relatively heavy. Slates at the eave could be 1 inch thick or more and the 3 16 inch thick at the top of the slope.

Nominal 3 16 inch 5 mm to 1 4 inch 7 mm 2. There are a wide variety of slate sizes although a common large size is 600 x 300 mm. Do you recommend this type of installation. Heavy grade slates exhibit strong stone surface texture and is visually discernible from synthetics.

The quality but also the weight is determined by the thickness. Textural slate roofs the uses of slates of rougher surface textures and thicknesses mixed throughout a roof creates a textural slate roof. Standard asphalt shingles add very little thickness to the roof because a standard three tab shingle is about 3 16 inch thick. We have a 30 square roof on a 275 year old home with sagging but strong rafters and want to remove the slate weight and re roof.

Imitating slate shingles 12 x 24. Nominal 1 2 inch 13 mm to 3 4 inch 19 mm.