Cabinets that support Granite countertops?

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Forum topic by bluchz posted 07-24-2009 11:20 PM 7991 views 0 times favorited 5 replies Add to Favorites Watch
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187 posts in 3372 days

07-24-2009 11:20 PM

Topic tags/keywords: question

I am building kitchen cabinets that will have Granite counter tops. Do the cabinets need to be beefed up to support the weight?. I was going to make the sides 3/4? plywood, the back 1/2” plywood. the tops/ nailer for the counter top to attach to would be a 4” wide 3/4”plywood front and back. will this be enough?

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3584 posts in 3412 days

#1 posted 07-24-2009 11:26 PM

I built a set of cabinets for my home (“L” shaped) that was a 12’ x 8’ run. All from 3/4” ply and we installed 1 1/2” granite on top (2 years ago) and it is fine.


-- Whether You Think You Can or You Think You Can't, YOU ARE RIGHT!!!

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26 posts in 3227 days

#2 posted 07-25-2009 03:39 AM

I worked for a kitchen cabinet shop for about 2 years and dont ever remember them building the base cabinets any different for laminate countertops or for granite or such. You figure that base cabinets usually arent much more than 36” wide and 22” deep or so. By nature they are pretty strong even with 1/2” plywood sides. Then you go attaching the base cabinet to the wall and also to other base cabinets you end up with a pretty solid structure. Just use common sense. If you somehow end with just an end panel next to a dishwasher or something like that which doesnt support, then you may have to do something.

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2131 posts in 3743 days

#3 posted 07-25-2009 04:25 AM

Sounds like it should be fine. The place where you bought your counter tops can tell you the minimum requirements. I built my new kitchen with cabinets similar to what you’re stating, for quartz tops and the installer told me that they would support granite it I wanted it.

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#4 posted 07-25-2009 04:29 AM

The cabinets will be fine with 2cm or 3cm stone. Mine are and there is no added support.

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2240 posts in 3268 days

#5 posted 07-25-2009 05:51 AM

I agree with the above…you should not have a problem with the weight using 3/4 ply…and as long as you use stable joinery and or pocket holes/screws for the frames I believe you can count on them stading up very well.

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