How to Protect PVC Pipe in a Foundation Wall

PVC pipes are used in plumbing in most parts of the country. These pipes will seal permanently with a bit of glue. The one failure of PVC is its weak structure. A PVC pipe that runs through a concrete foundation wall must be protected. The proper way to accomplish this is to coat the pipe with creosote before grouting it in place. The grout will hold the pipe in place, while the creosote protects it from the abrasive grout.

Heavy-duty drill with a masonry hole saw
PVC pipe
Creosote
Rubber gloves
Duct tape
Grout
Grout bag
Trowel
Cold chisel
Sledgehammer
Work gloves
Safety glasses

Instructions

- 1
  Cut a hole through the wall with the masonry hole saw on your heavy-duty drill. Choose a hole saw that is 1 inch larger than the diameter of your pipe.
- 2
  Rub creosote on the outside of the middle of the PVC pipe where it will go through the wall. Wear rubber gloves for this part of the procedure to prevent damage to your skin. Stand the pipe on its end and let the creosote dry for one hour.
- 3
  Wrap the clean ends of the PVC pipe with duct tape to keep out dirt and debris. Slide the pipe through the hole in the wall.
- 4
  Lift the pipe to the center of the hole. Place an assistant on each end of the pipe to hold it in place.
- 5
  Mix grout according to the manufacturer's instructions. Fill your grout bag with the mixture. Place the tip of the grout bag into the hole under the pipe. Fill the hole with grout, while being sure to keep the pipe centered in the hole. Fill the hole from the bottom, up. Fill the hole from the inside, then the outside. Scrape away any excess grout with your trowel. Let the grout cure overnight before connecting the pipe to any others.

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