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 thread  Author  Topic: Concrete Countertops on 3/4" plywood boxes?  (Read 573 times)
romanekr
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xx Concrete Countertops on 3/4" plywood boxes?
« Thread started on: Nov 1st, 2009, 11:36am »
We are considering installing concrete countertops and were wondering if 3/4" plywood boxes (solid tops) are strong enough or if additional bracing is necessary. If so, how do you reinforce it? Anyone have an opinion or experience with this?

Rox undecided
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Rob
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xx Re: Concrete Countertops on 3/4" plywood boxe
« Reply #1 on: Nov 1st, 2009, 1:42pm »
I've never worked with concrete countertops but I would think they are about the same weightwise as granite. And I’ve never done anything special for granite other than adding extra supports under longer cabinets wherever there is a partition.

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Jeff
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xx Re: Concrete Countertops on 3/4" plywood boxe
« Reply #2 on: Nov 1st, 2009, 2:28pm »
You shouldnt need to beef up anything. They get installed on standard cabinets all the time.

They do weigh considerably more than granite. Granite is usually 3/4" thick with a built up edge. Concrete is usually 1.5 to 2" thick.
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Jeff Mills
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xx Re: Concrete Countertops on 3/4" plywood boxe
« Reply #3 on: Nov 1st, 2009, 3:24pm »
we built some for them and the contractor asked for 3/4" nothing extra
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tament
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xx Re: Concrete Countertops on 3/4" plywood boxe
« Reply #4 on: Nov 1st, 2009, 4:26pm »
A typical concrete countertop weighs about 140 lbs. per cubic foot. Most base cabinets aren't backed and may need some additional support. Better safe then sorry! Fu-Tung Cheng has a step by step book out called "Concrete Countertops" that's pretty informative, lots of great photos as well.
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