Replacing Undermount Sink With Granite Countertops

Replacing an undermount sink with granite countertops can enhance the aesthetics and functionality of your kitchen. Here's a comprehensive guide to help you through the process:

Step 1: Preparations

Before you begin, gather the necessary tools: a utility knife, caulk gun, tape measure, level, and silicone sealant. Purchase a new granite countertop and undermount sink compatible with the countertop thickness. Disconnect the water supply and drain the sink.

Step 2: Removing the Old Sink

Use a utility knife to cut the caulk around the sink. Carefully slide the sink out from underneath the countertop. If the sink is glued down, use a heat gun or hair dryer to soften the adhesive before removing it.

Step 3: Preparing the Countertop

Measure the sink cutout on the countertop and transfer the measurements to the new granite countertop. Cut the countertop using a diamond blade wet saw or a fabrication shop. The cutout should be slightly smaller than the sink to allow for a caulk seal.

Step 4: Installing the Sink

Apply a bead of silicone sealant around the perimeter of the sink cutout. Place the sink into the cutout and press it firmly into place. Use clamps to hold the sink in position while the sealant dries.

Step 5: Caulking

Once the sealant has set, apply a bead of caulk around the edges of the sink and the countertop. Smooth the caulk with your finger or a caulking tool to create a watertight seal.

Step 6: Reconnecting the Plumbing

Reconnect the water supply lines to the sink and drain. Turn on the water supply and check for any leaks. Tighten any loose connections if necessary.

Step 7: Finishing Touches

Clean the countertop and sink thoroughly to remove any residue. Inspect the caulk seal and repair any gaps as needed. Your new granite countertop with undermount sink is now complete.

Tips

Use high-quality silicone sealant specifically designed for granite countertops.
Allow the sealant to dry completely before using the sink or countertop.
If the countertop is heavy, seek assistance to lift and install it.
Consider using a template or hiring a professional for precise measurements and cutting.
Regularly clean and maintain the granite countertop to preserve its beauty and longevity.