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.
Installing plywood for granite countertops.
Insert screws upwards to secure the plywood to the countertop.
I had some 3cm granite installed in a kitchen.
Space screws every 8 10 inches 20 25 cm.
Installing a granite countertop yourself is challenging but the cost savings and enhancement to your kitchen are well worth the effort.
Is it normal not to use a plywood underlayment.
Prep the cabinets to receive granite countertops cut 3 4 plywood to fit on top of all the base cabinets.
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.
Make sure the plywood does not overhang the outside dimension of the cabinet.
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.
They put the stone directly on the cabinets.
Maintenance clean your new countertops using only granite and quartz cleaner which you can purchase at most fabrications shops.
Attach the plywood to the cabinets by drilling screws through the cabinet.
Get underneath your countertops and position an electric drill at one corner of your cabinet braces.
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.