Concrete Countertop Thickness and Weight

Thickness

The standard slab thickness is 1.5" - 2" slabs are also quite common. Larger thickness is also possible and is done for aesthetic reasons. If a 6" slab is desired, however, the back and center are still 1.5" thick and the front "grows" to the desired thickness. So it still looks 6" thick but is only 6" thick in the front.

Weight

A 1.5" thick standard concrete countertop has an approximate weight of 18.75 pounds per square foot. (Granite is approximately 18 pounds per square foot.) The countertop weight can be less if lightweight concrete is used. Though some countertop contractors will not use lightweight concrete because it has less strength.

Standard cabinetry will support the concrete slabs as the weight of the countertops is distributed over a large area.

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