Install Granite Countertops
Granite countertops are a lovely addition to any kitchen or bath. Because of the nature of the granite product, until recently, it was hard for a do-it-yourselfer to do. But now there are pre-shaped granite products that come with detailed directions on how to install granite countertops that allow even a novice to successfully complete the project. If you have a kitchen or bath area that you want to install countertops which has more than one corner or any unique features, you may still want to consider hiring a professional. Otherwise a one- or two-piece installation should be fairly easy if you follow these directions.
Contents
Steps
Measure the Countertop Carefully
- Install your cabinets. Make sure they are level and securely attached to the floor and wall.
- Make sure walls are square. If they aren’t, make necessary allowances as you take measurements.
- Use Kraft paper or other lightweight, solid material to create a template of the countertop. Precisely mark the location of the sink hole and any other cuts in the granite.
- Decide what kind of edge you want on the countertop. Allow for an overhang on your template.
- Choose your granite material. You may want to also choose matching material for a backsplash.
- Get installation advice from the supplier on how to install granite countertops. As you make your final decision, double-check your template for accuracy.
- Order the granite.
Prepare the Cabinets to Hold the Weight of the Granite
- Install ¾-inch (1.905-centimeter) plywood to the tops of the cabinets. This supports the added weight of the granite. Cut the plywood even with the front of the cabinets.
- Make sure the plywood sets level on all the cabinets.
- Attach the plywood to the cabinets with screws. Drill pilot holes into the cabinet first to prevent the wood from splitting.
Work with the Granite Slab
- Find adequate help to move the granite slab(s) into place. Handle with care, because the granite is breakable.
- Set the granite in place. Make sure it’s going to fit properly.
- Use a pencil or marker to mark the exact line around the hole for the sink on the plywood reinforcement.
- Remove the granite from the base cabinets temporarily. Stand it upright in a safe location to prevent it from breaking.
- Make a pilot hole in the middle of the sink opening with a spade drill bit. Use a jigsaw to continue cutting out the hole in the plywood. You can cut outside of your line as much as 1/8 inch (0.3175 centimeter).
- Install the sink.
Level the Granite and Glue It Down
- Put the granite back on the cabinets. Push all the seams together as tightly as possible.
- Make sure the granite is level. Once it is, raise it one more time.
- Apply silicone sealer around the edges of the plywood. Space circular dollops every 6 to 12 inches (12 to 30 centimeters).
- Run a bead of caulking around the sink rim on both the plywood side and the granite side.
- Lower the granite slab into place. Make sure it’s level once again.
Fill the Seams
- Run blue painter’s tape on either side of the seam.
- Mix polyester-based resin with color similar to the granite. For best results mix three batches of slightly differing colors.
- Add 3 percent hardener to 97 percent resin to the medium color. Press it into the seams with a putty knife. Repeat the process with the other colors to get a close match with the granite countertop. Work quickly, because once the hardener is in place, it sets quickly.
- Remove the painter’s tape as soon as you finish the seam. When the seam dries, smooth it out using a seam stone.
Tips
- Allow time, usually 3 to 4 weeks, for delivery of the finished granite countertop.
Warnings
- Always wear proper safety equipment when working with power tools.
- Allow adequate ventilation when working with resins and hardeners.
Things You'll Need
- Kraft paper or other lightweight solid material to make a template of the countertop
- Carpenter’s level
- ¾-inch (1.905-centimeter) plywood
- Circular saw
- Drill
- Drill bits
- Screws
- Pencil or marker
- Spade bit
- Jigsaw
- Silicone sealer
- Caulking
- Caulk gun
- Blue painter’s tape
- Polyester-based resin
- Putty knife
- Seam stone
Related Articles
- Buy an Undermount Sink
- Seam Granite