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Questions about Quartz Counter Overhang and support???

I hoping someone car provide some clarity for me. My wife and I are in the process of building a new home and we have questions about the kitchen island counter top and the support needed for it.
We reviewed the drawings for the new house and the we have a large center island in the kitchen that over looks the great room/living room. We plan on doing Quartz counter top. The plans right now are roughly 98"x54" with a 16" overhang on the long side and a 12" over hang on the one short side. To support the overhang the builder is going to use T-brackets but they are also saying that they need to build a 12" thick wall just behind the cabinets for support and have a place to attach the T-brackets. If we went with the standard 10" over hang on the 2 sides it would a 2x4 wall. The problem is because of that super thick wall it pushes the counter width to 54", we were originally thinking about 48-50 inches wide, and that extra width makes the seating area of the counter really close to where the living room starts.

The builder is saying that they have to do a 12" thick wall and I'm just not fully buying that. That extra thick wall is going to cost roughly $900 more! Should I be pushing harder for them to find different brackets or have them do just a 2x6 wall or something? It seems like over kill especially for quartz which is much stronger then Granite. I've googled and have seen braces that tie into the front of the cabinets and L- shaped brackets that attach to either the back of the cabinet or to a 2x4 or 2x6 wall. I really don't think they are doing this right so I'm looking for opinions. Any advice is appreciated.

Re: Questions about Quartz Counter Overhang and support???


We have recently created a kitchen island using a piece of antique furniture and a large piece of quartz. The top itself weighs just over 1100 pounds, and the piece of furniture weighs about 300 pounds. The floor was fine with that much weight, since we have an old Victorian house. Our structure floor joists are made of 2x12's on 12" centers due to a long span.

We wanted the longest overhang possible, but did not want any stantions or brackets under the overhang. Our granite stone company suggested we use 1/8" steel to support the overhang. I really liked that idea and that is what we went with. They suggested using 3 pieces along the length, and I suggested they use 6 instead. Our stone top overhang is perfectly fine. I have actually stood on it without any issue.

You are the home owner, you make the decisions. Do not allow the contractor tell you what they want. You tell them.


Handy Andy In Mt Airy NC

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