Epoxy Pipe Lining for Slab Leaks in Woburn, MA

What is epoxy pipe lining?

Epoxy pipe lining is a trenchless repair that coats the inside of a pipe with epoxy resin. The coating seals pinholes and small cracks and forms a new barrier inside the old pipe. For water lines, pipes are dried, cleaned and coated. For drain lines, a resin-soaked liner is cured in place.

Lining can fix slab leaks with little or no concrete work. It's not the right fix for every pipe, though. The existing pipe must still be in fair shape, and the leak must be small enough for the coating to seal.

Signs epoxy lining may fit your leak

• Pinhole leaks in copper water lines.
• Small cracks or corrosion in drain lines under the slab.
• Leaks under finished floors you don't want to tear up.
• Pipes that are aging but not collapsed or badly broken.

Lining is usually not a good choice for pipes that are crushed, separated at joints, badly sagging, or heavily scaled inside. In those cases a reroute or spot repair works better.

How does epoxy pipe lining work?

For water lines, the plumber isolates the pipe, dries it with heated air, and cleans the inside with an abrasive. Then they blow epoxy through the line to coat every surface and let it cure. For drain lines, a flexible liner soaked in resin is pulled or inverted into the pipe and cured to form a pipe within a pipe.

1. Inspect the pipe. Leak testing for water lines, and a camera inspection for drain lines.
2. Isolate and access. The plumber connects at existing fixtures or small access points.
3. Dry and clean. Old scale and corrosion are removed from inside the pipe.
4. Apply the lining. Epoxy coating or a resin-soaked liner goes in.
5. Cure and test. Once hardened, the line is pressure tested or camera checked.
6. Reconnect fixtures and restore water.

Epoxy lining vs. other options

How much does epoxy pipe lining cost?

National 2026 cost guides put pipe lining for a slab leak at about $500 to $3,500, and trenchless lining for larger jobs at about $2,000 to $5,000. Drain line lining often costs more than water line coating. Your price depends on pipe length, diameter, access points and pipe condition.

• Length and diameter of the pipe
• Water line coating vs. drain line liner
• Number of bends and fittings
• Cleaning needed before lining
• Camera inspection before and after

When is it an emergency?

Lining is usually scheduled, not done on an emergency call. If you have water coming through the floor right now, shut off the main valve and call for emergency slab leak repair. The plumber can stop the leak first, then discuss lining as a longer-term fix.

Questions to ask before choosing lining

• Was the pipe checked with a camera or pressure test first?
• Is the lining product approved for drinking water (for supply lines)?
• What warranty comes with the lining?
• What happens if the pipe doesn't qualify once work begins?

Epoxy lining for drain lines under basement floors

In many older Woburn homes, the main drain under the basement floor is cast iron. As cast iron ages, it rusts and scales on the inside, and small cracks can form. If a camera inspection shows the pipe is still round and in one piece, a cured-in-place liner can often seal it without breaking up the basement floor.

The liner forms a smooth new pipe inside the old one. It can also help drains flow better, since the rough, scaled surface is covered. Where the pipe has collapsed or separated, a section must be replaced first. See sewer line slab leak repair for those cases.

Related slab leak services

Copper pipes

Copper Pinhole Leak Repair

Find and fix tiny corrosion holes in copper pipe.

Explore →Drain lines

Sewer Line Slab Leak Repair

Fix cracked drain lines under basement and slab floors.

Explore →No jackhammer

Pipe Rerouting

Skip the slab. Run a new line through walls, ceilings or the basement.

Explore →

Epoxy Pipe Lining across Woburn, MA

We connect homeowners and property owners across Woburn, MA 01801 with local pros for epoxy pipe lining, including Downtown Woburn, North Woburn, East Woburn, Walnut Hill and Cummingsville. See all Woburn service areas.