Attaching Undermount Bathroom Sink To Granite

Installing an undermount sink in a granite countertop can enhance both the aesthetics and functionality of your bathroom. However, it's essential to follow specific steps to ensure a secure and leak-proof installation. Here are the key aspects to consider when attaching an undermount sink to a granite countertop:

1. Preparation and Measurements

Begin by preparing the countertop by cleaning its surface and ensuring it is level. Carefully measure and mark the outline of the sink onto the granite. Use a template or place the sink upside down on the countertop and trace its edges to create an accurate outline.

2. Creating the Sink Cutout

Once the outline is marked, use a diamond-tipped blade on a grinder or wet saw to cut out the section of the countertop where the sink will be installed. Check the fit of the sink regularly to ensure it aligns with the outline and sits flush against the countertop.

3. Applying Adhesive

Apply a generous bead of silicone adhesive to the rim of the sink that will come into contact with the granite. Use a caulk gun to dispense the adhesive evenly around the entire perimeter. Avoid applying excessive adhesive, as it can create a mess.

4. Support for the Sink

Before placing the sink into the cutout, install temporary supports made from wood blocks or metal brackets. These supports will hold the sink in place while the adhesive sets and prevents it from sagging or shifting.

5. Setting the Sink

Carefully lift the sink and align it with the cutout. Gently press the sink into place, ensuring the adhesive makes full contact with both the sink and the granite. Remove any excess adhesive that squeezes out around the edges using a damp cloth.

6. Setting Time

Allow the adhesive to set completely according to the manufacturer's instructions. This can typically take several hours or overnight. Do not use the sink or apply any weight to it during this time.

7. Finishing Touches

Once the adhesive has set, remove the temporary supports and apply a thin bead of silicone caulk around the joint between the sink and the granite. Smooth out the caulk with a damp finger or a caulking tool. This will create a watertight seal and prevent leaks.

Remember to refer to the specific instructions for your sink and adhesive for any additional recommendations or safety precautions. By following these steps carefully, you can ensure a successful and durable installation of your undermount bathroom sink on your granite countertop.