PVC Drain Pipe Replacement

  • 1-2
  • Intermediate
  • 30-40
What You'll Need
Replacement drain pipe
Hack saw
Sandpaper
Couplings
Putty knife
Joint compound
Brush
Solvent
Glue

If you're facing problems with your PVC drain pipe, it's a good idea to take immediate action to fix the problem, in order to avoid any damage from flooding or hazards from standing moisture. You can replace the drain yourself and save a lot of money in the process—the whole endeavor can be completed within a few hours.

Step 1 – Gear Up and Lay Protective Sheeting

Grab your work gloves to protect your fingers from cuts, liquids, and adhesives. Lay some towels or plastic sheeting to protect the area where you're working.

Step 2 – Locate and Cut the Problem Area

Examine the PVC drain. Look for the section of pipe that's been damaged. After you locate the pipe, use a hacksaw to cut the damaged pipe. A small one should be fine.

hand sawing a pvc pipe

Step 3 – Supplies

Bring a piece of your damaged pipe to a hardware store so you can match the replacement coupling piece by size and shape.

Step 4 – Coupling

This coupling will hold the new installation in place. Test the fit by sliding the coupling in the pipe. The sleeve and the pipe should fit snugly.

pvc pipe connections

Step 5 – Smoothing the Edges

Before you start the replacement process, even out the two edges from which the damaged pipe section was cut off. Your hacksaw should handle this with no problem, though you might be able to pull it off with a simple putty knife.

Step 6 – Drain Pipe Measurement

Measure the length of the replacement drain pipe, referring to the old one to make sure you've got it right.

Step 7 – Sanding the Ends

Before installing the drain pipe into the PVC drain, sand the outer area at the top of the replacement pipe. Use sandpaper with fine grit to buff down the edges.

Step 8 – Clean and Glue the Connection

Wipe off the spots you'll be connecting to make sure the adhesive sticks, then use a brush to apply glue to the interior top section of the coupler.

applying glue to pvc pipe

Step 9 – Insert the Coupler and add Joint Compound

Before you attach the coupler, clean the threaded surface and add joint compounds to avoid leaks. Now carefully insert the sleeve or coupler into the replacement drain pipe.

Step 10 – Insert the Pipe into the Drain

Repeat steps 8 and 9 on the other end of the replacement drain pipe. While inserting the drain pipe into the give it an extra twist to make sure it fits properly. Hold it in place for a minute or so.

Step 11 – Finish Up

Apply solvent on both ends to clean up any excess compound and adhesive, and re-attach the drain pipe to the PVC drain.

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