Forum responses cabinet and millwork installation forum from contributor k.
Installing plywood for granite countertops.
They put the stone directly on the cabinets.
Get underneath your countertops and position an electric drill at one corner of your cabinet braces.
Make sure the plywood does not overhang the outside dimension of the cabinet.
However for granite with a thickness of 2 centimeters about 3 4 inches you will definitely need to use plywood for support.
I will have the following run of cabinets which will be screwed together and to the back wall and will install a 20mm 3 4 thick granite countertop over it with sink and cooktop range.
Space screws every 8 10 inches 20 25 cm.
Is it normal not to use a plywood underlayment.
Installing a granite countertop yourself is challenging but the cost savings and enhancement to your kitchen are well worth the effort.
Insert screws upwards to secure the plywood to the countertop.
I had some 3cm granite installed in a kitchen.
Also what is the best way to support the bar that has a 10 inch overhang.
Prep the cabinets to receive granite countertops cut 3 4 plywood to fit on top of all the base cabinets.
There is no plywood under the granite.
The plywood supports the granite and gives enough clearance for the bull nose edging to clear the drawers and doors.
I ve seem people saying that a plywood backer is important and some other people saying that it is more trouble than it is worth and the cabinets provide.