Who Repairs Undermount Sinks? Here’s Who to Call

This article was created using automation technology and thoroughly fact-checked and edited by HomeAdvisor Editor Ryan Noonan.

If you are asking who repairs undermount sinks, call a countertop specialist to re-secure the basin and a plumber to reconnect plumbing. Sagging or a gap between the sink and countertop signals the need for a proper reset. This hiring guide explains who to call and what to expect for time and cost.

Benefits of Hiring a Countertop Specialist for Undermount Sink Repair

A countertop pro evaluates your countertop material and thickness to prevent cracks and choose the right support. They bring the tools and experience to secure the sink correctly the first time. They also decide when braces, clips, epoxy, and silicone are needed for a durable repair.

• Understands granite, marble, concrete, laminate, and tile limitations

• Chooses supports to match sink weight and countertop thickness

• Avoids drilling into thin countertops that can crack

• Uses proper cutting and drilling tools to protect stone

• Re-secures sagging sinks to eliminate gaps and movement

• Applies epoxy adhesive and silicone for a durable install

• Completes work efficiently, often in one to two hours

• Advises on heavy-sink supports to prevent future sag

Can I Hire a Plumber for Undermount Sink Repair?

A plumber ensures the sink is connected properly and leak-free after the basin is set. Hire one when the countertop specialist does not reattach plumbing. Pros include correct reconnection and leak testing, usually within about an hour. Confirm the scope, as not all plumbers handle mounting. Expect $45 to $200 per hour, and some charge a flat site visit fee. If you want to make sure your plumbing is reconnected safely and professionally, you might want to consider hiring a local plumber to ensure the job is done right.

How Do Pros Repair/Install Undermount Sinks?

Pros follow a straightforward process to reset an undermount sink securely.

1. Assess the detachment and the countertop’s thickness and material.

2. Add a metal or wood brace if needed for support.

3. Attach the sink to the countertop with epoxy adhesive.

4. Seal the perimeter with silicone caulking for a watertight finish.

5. Confirm the set, allow proper cure time, then reconnect plumbing.

How Much Does Undermount Sink Repair Cost?

The average undermount sink repair costs $200. Installing or resetting the sink generally takes one to two hours. If plumbing reconnection is not included, plan for a plumber at $45 to $200 per hour, sometimes with a flat site fee. Materials add modest costs: silicone caulking about $5 and heavy-sink supports around $100. Total price depends on detachment severity, countertop material and thickness, added supports, and plumbing reconnection needs.