For designs where your countertop is cantilevered or overhangs the supports overhanging portion should be limited 16 to 24.
Under granite corbels should match cabinet.
I wasn t home when this was done but i m 99 sure corbels went on before roughtop.
We can span up to 3 0 from cabinet to cabinet when 1 1 4 inch thick granite is used.
Use granite countertop brackets when overhanging stone counters.
I have 2 corbels under the 12 section.
It is bow shaped w 7 overhang on ends 12 in center.
If using 3 4 inch thick granite with plywood subtops you should also be fine without adding additional support.
Corbels are brackets similar to shelf brackets that create an l shape in order to transfer the load down from the countertop to the wall or cabinet below.
No way should 15 of granite be unsupported.
These corbels may be used on either side by simply moving the metal keyhole plate to the other side.
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You have three basic options to support your granite.
The fabricator will use mesh under the countertop at the dishwasher location for 1 1 4 inch thick granite.
Fragile stones may require corbels and supports that are spaced closer together and that do not allow as much overhang than the specifications here.
Corbels posts and steel brackets.
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The corbels are pre sanded making them easy to finish with a wood stain paint or faux finish to match your room decor.
My island is 100 l contractor put roughtop down cut to shape before fabricator templated countertop.