Space screws every 8 10 inches 20 25 cm.
Installing plywood for granite countertops.
Attach the plywood to the cabinets by drilling screws through the cabinet.
However for granite with a thickness of 2 centimeters about 3 4 inches you will definitely need to use plywood for support.
Also what is the best way to support the bar that has a 10 inch overhang.
The plywood supports the granite and gives enough clearance for the bull nose edging to clear the drawers and doors.
They put the stone directly on the cabinets.
I had some 3cm granite installed in a kitchen.
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.
Maintenance clean your new countertops using only granite and quartz cleaner which you can purchase at most fabrications shops.
When installing granite countertops you will not need an underlayment of plywood if the granite has a thickness of 3 centimeters about 1 1 4 inches.
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.
Forum responses cabinet and millwork installation forum from contributor k.
Make sure the plywood does not overhang the outside dimension of the cabinet.
Get underneath your countertops and position an electric drill at one corner of your cabinet braces.
There is no plywood under the granite.
Is it normal not to use a plywood underlayment.