Hidden Countertop Support Brackets

NYMKJune 3, 2013

Hi. I'm putting in a peninsula that is 72 inches by 39 inches. Part of the granite will be supported by 3 cabinets that I have underneath (that are 24 inches deep by 57 inches wide). I need to support the rest of the island. And I would like it to be hidden (so no legs).

Yes, I know there is stuff on the GW about hidden countertop support brackets. I know because I've found information about it months ago but now that I am searching for it again because I need to order stuff, I just can't seem to find anything other than a post about the speedbrace by stealth.

So I am looking for hidden brackets that will be attached to cabinets to support granite. I've attached a rough drawing of my peninsula. Also, if anyone knows how many I will need, I'll take that advice too. Thanks.

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Reposted from a 2011 thread:

"Hopefully this will help future readers looking for answers. The post by Buehl is all over the conditions of needing support as recommended by the MIA (Marble Institute of America).
This is for "Single-Level" counters with cantilever overhang:
For 3cm stone: any overhang over 10" will need additional support; spaced every 36" or less.
For 2cm stone: any overhang over 6" will need additional support; spaced every 24" or less.
For "single-level", the goal is to support the cantilever. We do this with CONCEALED SUPPORT. Single-level concealed supports use the mass of the supported material to "reach out" and support the un-supported material. "

    Bookmark   June 3, 2013 at 1:05PM
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I remember there were rules like any 3 cm stone with an overhang over 10" will need additional support. But how do you know it needs to be spaced every 36"? Doesn't that depend on what type of support you use?

Also, I am looking for recommendations for actual concealed brackets? Does anyone have any recos? or can someone provide a link to a thread about this? Many thanks!

    Bookmark   June 3, 2013 at 7:37PM
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Freedom bracket by Federal Brace. That's what we have.

Here is a link that might be useful: freedom bracket

    Bookmark   June 3, 2013 at 8:03PM
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We used the freedom brackets as well for our island. I think we used 3, plus we have the support on either end. Our island is about 11 ft. long.

    Bookmark   June 3, 2013 at 8:50PM
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Check with your granite installer if you have one. My island has corbels but the KD didn't include enough so the fabricator added a small bracket that you barely notice. It was $50 and they installed it with the countertop. The GC had to add a little support behind the decorative panel for them to nail it into.

    Bookmark   June 3, 2013 at 9:33PM
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My husband went to a metal store near us & basically fabricated our own support bar. The "T" was two separate pieces that he had welded together.

Edited to say that my husband told me "T" needs to be rotated 45deg counter clockwise. :-)

This post was edited by frugalnotstingy on Tue, Jun 4, 13 at 15:36

    Bookmark   June 4, 2013 at 1:34PM
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So after doing a bunch of further research, I realize the type of bracket you will buy will depend on the type of installation. For example, my granite is going to be installed partially on top of cabinets, so the bracket/brace will be attached to the cabinets. Whereas some people will attach it to a pony wall.

There were three concealed/hidden brackets recommended on this site.
1) Freedom Bracket by Federal Brace. One of the popular ones for islands/peninsulas with cabinets supporting part of the island. They recommend that you use one bracket no more than every 18" (starting 4" from the end), so I would need 7 brackets, right?

2) Counterbalance plates by Chemical Concepts. They actually recommended that I use two of the Counterbalance Crossbars. Not sure if that makes sense to me. I have to think that through more. Their supports are not suppose to be spaced more than 16" to 20".

3) StealthSpeedBrace. They recommend that I need the 24" brace (for a 15" overhang?) and to use 4 of them.

I'm going to do more research. I'll let you know what I end up with.

    Bookmark   June 4, 2013 at 9:51PM
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Yesterday I ordered the Freedom Bracket. I ordered the 12" x 12" length for the 15" overhang. And I ordered 6 six of them: two for the 39" side and 4 for the 72" side. Since I am in NY, they said that I should opt for normal shipping because it only takes two days to get there after they process the order (which takes 1-2 days).

    Bookmark   June 6, 2013 at 8:52AM
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Thanks for summing up the info!

    Bookmark   June 6, 2013 at 9:09AM
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I got a freedom bracket, too. I included the link where I got them below. It was super fast and when I needed help with the purchase they had good customer service. I have purchased from this company before with GREAT success so since they sold the supports, I got them there, too.

Here is a link that might be useful: freedom bracket - excellent service

    Bookmark   June 6, 2013 at 11:00AM
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Cabinet type plays a major role as well. Many of these brackets work fine for framed cabinets but not frameless. Design also plays a role in how that bracket will be secured to the cabinets.

I have a peninsula and frameless cabinets. I went with a brackets from amastin.com

    Bookmark   June 7, 2013 at 3:55PM
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Great info and exactly what I was looking for!

    Bookmark   August 11, 2013 at 4:30PM
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My granite installer was completely uninterested in how my 15" overhang would be supported - before and after installation. Do your research.

    Bookmark   January 7, 2015 at 2:39PM
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You might consider Fastcap's Stealth SpeedBrace. I haven't used it, but I've been keeping it in mind if I need to.


Here is a link that might be useful: Fastcap Stealth SpeedBrace

    Bookmark   January 7, 2015 at 5:13PM
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