How to Install Tubes of Foam Insulation on Copper Water Pipes

Determine the size of the pipe by wrapping a tape measure around it and measuring the circumference. Divide the circumference by 3.14 to determine the diameter. For example, a pipe with a circumference of approximately 1.6 inches has a diameter of 1/2-inch because 1.6 divided by 3.14 equals approximately 0.5. Ensure that you use the most effective insulation by purchasing foam tubing that is designed to fit the pipe.

Remove the insulating foam tubes from their packaging and visually inspect them for damage, including rips, holes or dents. Set all damaged tubes to one side.

Locate the cut that runs along the length of each tube. Use your finger to run it along the length of the slit to ensure that the cut penetrates the full depth and length of the tube. If the cut is not complete, either break it open with your fingers or cut through the problem area with a pair of scissors.

Measure the pipe length then cut the tube to the required size if the pipe is shorter than the tube; otherwise, use the full length of the tube. Open the tube by pulling apart the sides of the slit then slide it over the pipe. If the tube has a self-adhesive strip along the slit, remove the protective covering and push the sides together to seal the tube once it is on the pipe.

Secure the tube in place with several strips of self-adhesive tape wrapped tightly around it. Add extra self-adhesive tape in any areas where the pipe is bent; otherwise, the tube may open up and pull away from the pipe.