How to Undermount a Kitchen Sink
The sleek look of under-mounted sinks is a popular choice for kitchens with granite, marble or engineered stone countertops. Under-mounted sinks are installed from under the countertop and are secured with clamps and epoxy. Though kitchen sinks full of water can weigh more than 100 pounds, the clamps and epoxy hold strong, and a properly installed sink will have no problems holding up under the weight. You can install an under-mounted sink under natural stone countertops that have polished sink openings. Does this Spark an idea?
Things You'll Need
- Rubbing alcohol
- Rag
- 2-inch-by-4-inch piece of lumber
- Under-mounted sink
- Silicone caulk
- Caulk gun
- Bar clamps
- Two-part epoxy
- Disposable gloves
- Small plastic putty knife or paintbrush
Instructions
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1
Clean around the sink opening from under the sink with rubbing alcohol applied to a rag.
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2
Set a 2-inch-by-4-inch piece of lumber that is wider than the sink opening on top of the countertop across the opening. Dry-fit the sink from under the countertop to test the sink opening for proper fit. Apply a bead of silicone caulk to the sink's lip. Push the sink up to the opening to seal it to the bottom of the counter.
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3
Have a helper put bar clamps through the drainage holes in the sink. Attach one end of each clamp to the bottom of the drainage hole and the other end to the 2-inch-by-4-inch board. Tighten the clamps so they will hold the sink tight to the countertop while the caulk dries.
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4
Mix a two-part epoxy by following the manufacturer's instructions. Look under the sink to find the bolt posts on the sink's rim. Wear disposable gloves to apply the two-part epoxy to the bolt posts and under-mount clamps with a small plastic putty knife or paintbrush.
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5
Wait a day or two to let the caulk and epoxy set up before connecting the garbage disposal and plumbing to the sink.
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References
- Photo Credit Jupiterimages/Polka Dot/Getty Images
