Reply by JBrow

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Posted on Butcher Block Island

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1368 posts in 1308 days

#1 posted 08-02-2016 10:23 PM


It seems to me the number of support brackets depends on the length and width of the cantilever, the strength of the top, the strength of the attachments securing the un-cantilevered section of the top, and the maximum load on the unsupported edge of the butcher block top. Since your cantilever is not all that much, the top is 2” thick, and even with weak attachments to the cabinets, the counter balancing effect of un-cantilevered section of the top adds to its stability, I would think two brackets positioned at each end of the cantilever are all that would be required.

In our kitchen remodel, I installed a breakfast bar top on a 2 X 6 stub wall and used screws through the 2×6 framing to secure the top to the framing. The bloodwood top is ¾” thick. It has an edge buildup around the perimeter consisting of 1-1/2” wide x ¾” edge face glued build-up strips. It is cantilevered off the stub wall by 14” and the top is 78” long. It is supported by a 2-1/4” thick solid wooden bracket on one end and by a ledger cleat on the wall at the opposite end of the bar. This has proven itself plenty of support for dinnerware and elbows. The breakfast bar is set 42” high, so I do not worry about anyone sitting on the cantilevered top. I doubt the support system I used would be strong enough to provide support for an adult seated on the cantilever. If you wish to support the weight of an adult seated on the cantilever (I have seen adults sitting on a 36” high countertop), additional support would probably be a good idea.

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