Attaching Granite Countertop To Base Cabinets

It s not necessary for the granite to be supported by an additional subsurface like solid plywood.

Attaching granite countertop to base cabinets.

To bear the weight of the stone countertop the base cabinets need a layer of 3 4 inch plywood across the top. When lifting the countertop take extra care to support the granite where it is thin such as along cutouts. 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.

First dry fit the countertop to ensure an accurate fit. Wipe away excess adhesive and remove the tape before the adhesive dries. Be sure to place pressure sticks along the back corners where the corner blocks are located to get the countertop down tight. Get underneath your countertops and position an electric drill at one corner of your cabinet braces.

Lay the slabs directly on the frames of the lower cabinets. Attach the countertops to the cabinets screw the countertop to the cabinet sides using 1 1 2 in. For a tight fit screw the angles to the cabinet first and then draw the top down to meet the steel angle with the second screw. He mentioned that the granite countertops are so heavy that they won t move once in place so there is no need to attach them with anything to the cabinets.

Insert screws upwards to secure the plywood to the countertop. When you slide it over against the. It should fit flush on top the cabinets. Heavy solid slabs of stone such as granite glue in place on top of the cabinets.

Outline the base s footprint with masking tape and mask the base too. If the pieces of the granite are very small they will use silicone caulk but otherwise nothing is used and they just sit on top of the cabinets. The plywood supports the granite and gives enough clearance for the bull nose edging to clear the drawers and doors. Space screws every 8 10 inches 20 25 cm.

Steel angles with 5 8 in.