Installing Plywood For Granite Countertops

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.

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. 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.

Forum responses cabinet and millwork installation forum from contributor k. There is no plywood under the granite. Insert screws upwards to secure the plywood to the countertop. Space screws every 8 10 inches 20 25 cm.

Prep the cabinets to receive granite countertops cut 3 4 plywood to fit on top of all the base cabinets. Make sure the plywood does not overhang the outside dimension of the cabinet. The plywood supports the granite and gives enough clearance for the bull nose edging to clear the drawers and doors. Also what is the best way to support the bar that has a 10 inch overhang.

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. 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.