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.
Installing plywood for granite countertops.
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.
Also what is the best way to support the bar that has a 10 inch overhang.
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.
Maintenance clean your new countertops using only granite and quartz cleaner which you can purchase at most fabrications shops.
Space screws every 8 10 inches 20 25 cm.
Get underneath your countertops and position an electric drill at one corner of your cabinet braces.
Installing a granite countertop yourself is challenging but the cost savings and enhancement to your kitchen are well worth the effort.
Attach the plywood to the cabinets by drilling screws through the cabinet.
I had some 3cm granite installed in a kitchen.
However for granite with a thickness of 2 centimeters about 3 4 inches you will definitely need to use plywood for support.
Forum responses cabinet and millwork installation forum from contributor k.
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.
Is it normal not to use a plywood underlayment.
There is no plywood under the granite.