Thor Forums

[MJC62]

As a retired 35 year member off Heat & Frost Insulators Local 17. I will give you my professional opinion. I advise against spray foam on anything that may ever need to be repaired or replaced. For obvious reasons if it is properly installed on a clean surface it is a nightmare to get off.
If you plan to insulate the lines use a low temperature heat tape and run the strip along the bottom of the line it is not necessary to spiral the tracer on a line you intend to insulate. Attach the tracer with strapping tape.
Next is the piping out of the weather? If yes than after applying the tracer, at the local hardware get a roll of the Fiberglass pipe wrap insulation, Frost King makes it, then spiral wrap the lines with the glass. Use your trusty duct tape to secure it.
If the lines are out in the weather where they might get wet. You are better served to insulate them with closed cell foam insulation. You will need to oversize the pipe insulation to cover the pipe and take in the tracer. My guess 1/2 pipe covering should be plenty. You can also get the closed cell foam at the hardware.