Installing Plywood For Granite Countertops

Also what is the best way to support the bar that has a 10 inch overhang.

Installing plywood for granite countertops.

Make sure the plywood does not overhang the outside dimension of the cabinet. Maintenance clean your new countertops using only granite and quartz cleaner which you can purchase at most fabrications shops. 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. Attach the plywood to the cabinets by drilling screws through the cabinet.

The plywood supports the granite and gives enough clearance for the bull nose edging to clear the drawers and doors. 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. However for granite with a thickness of 2 centimeters about 3 4 inches you will definitely need to use plywood for support. 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. Insert screws upwards to secure the plywood to the countertop. They put the stone directly on the cabinets. Prep the cabinets to receive granite countertops cut 3 4 plywood to fit on top of all the base cabinets.

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. There is no plywood under the granite.