How much overhang can a granite countertop have without support?

Subsequently, one may also ask, how do you support a granite countertop overhang?

These overhangs have to be supported by steel braces placed under the countertop and then screwed into the wooden studs in the knee wall. Any granite countertops with more than an 8” overhang should be adequately supported by steel braces.

Also, how much overhang should a kitchen island have without support? Different countertop materials have different requirements. Solid Surface countertops can overhang 6 inches without additional support (e.g. plywood decking). 3 cm Quartz (engineered stone) can handle a 14 inch overhangs and 3 cm Granite overhangs should not exceed a 10 inch overhang without additional support.

Considering this, how much support does granite countertop need?

Granite thickness – granite tops with a thickness of 3 cm can have an 8-10 inch overhang without additional supports. If your granite top has a 2 cm thickness, we recommend attaching a support system should the overhang exceed 6 inches.

How much should a countertop overhang?

The overhang for a countertop mounted in this fashion should be 18 inches to allow adequate knee-room when you sit at the countertop in a standard dining chair. For countertops used with a counter-height stool, you need a countertop height of 36 inches. The overhang need not be more than 15 inches on these countertops.