Attaching Granite Countertop To Base Cabinets

When lifting the countertop take extra care to support the granite where it is thin such as along cutouts.
Attaching granite countertop to base cabinets. It s not necessary for the granite to be supported by an additional subsurface like solid plywood. Wipe away excess adhesive and remove the tape before the adhesive dries. When you slide it over against the. After leveling and screwing the horizontal brace to the wall place the particleboard or plywood on top the cabinets.
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. First dry fit the countertop to ensure an accurate fit. Make sure the plywood does not overhang the outside dimension of the cabinet. Outline the base s footprint with masking tape and mask the base too.
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. Insert screws upwards to secure the plywood to the countertop. To bear the weight of the stone countertop the base cabinets need a layer of 3 4 inch plywood across the top. Attach the countertops to the cabinets screw the countertop to the cabinet sides using 1 1 2 in.
Lay the slabs directly on the frames of the lower cabinets. It should fit flush on top the cabinets. Attach the plywood to the cabinets by drilling screws through the cabinet. Steel angles with 5 8 in.
Space screws every 8 10 inches 20 25 cm. Be sure to place pressure sticks along the back corners where the corner blocks are located to get the countertop down tight. Place pressure sticks every 12 to 18 inches to help the adhesive bond the countertop to the cabinets at the back edge and apply clamps to the front edge. Prep the cabinets to receive granite countertops cut 3 4 plywood to fit on top of all the base cabinets.
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.