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- What Colors are Available / How to Get Samples
- Concrete Countertop Options: Edge details, inserts, back splashes
- Thickness & Weight of Concrete Countertops
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- Design Ideas: Concrete Countertop Info
Concrete Countertop Thickness and WeightLearn about size limitations for concrete countertops
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.
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.
Each concrete countertop contractor has optimum and maximum countertop sizes they work with.
Sizes they work with depend on countertop structural issues, shipping, and handling (a ten square foot countertop weighs nearly 200 pounds.)
Soupcan Inc., a countertop contractor, uses 10 feet long or 20 square feet in area as their maximum size for standard pricing. Larger sizes will require seams.
Depending on the overall countertop dimension, joints are often incorporated to accommodate handling. Seams can become a design element. CONCRETEWORKS STUDIO fills joints with a color matching latex. Soupcan Inc., uses a clear, 100% silicon sealer.
Seams in concrete countertops will look similar to the seams in marble or granite- you can see them, but they don't present any design or aesthetic problem.
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