Pipe Insulation

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You should be able to buy fitting covers wherever you buy the insulation. If not, try online.

Wrap the "diaper" of fiberglass around the fitting, shown is a fiberglass, and techlite piece.

Hold the plastic fitting cover and staple, tape, or I have even used small duct screws to keep the fitting cover closed.

Tee covers can be cut with a hosehold scissors to make reducing tees.

hot rod

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Dan_15

Seems like this is a common question on the Wall but I have forgotton the answer. I want to insulate my near boiler piping--what is the best material to use? I was planning to use fiberglass insulation on the cast iron and copper pipes of various diameters. What about the cold water pipes? Is fiberglass acceptable to use there too? Should I try and cover every linear foot possible? How should I insulate elbows, or is this not necessary? Thanks for your expertise.

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Depends on temperatures

If it is a boiler running 180° or more I prefer fiberglass or www.techlite.net. Either type has fitting covers available.

Either of these will work on cold water lines, as will most of the Armaflex or foam type products.

As far as fittings and such, how nice of a job, and how much heat loss do you want to minimize?

I feel a good insulation job should include all the fittings, or else it looks half cocked

hot rod

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Dan_15

Thanks hot rod, its a boiler at 180 degrees. I dont have access to techlite so I will probably go with the fiberglass. I am willing to put in the time for a nice looking job, but I have to admit I have no idea how to go about shaping those linear fiberglass tubes to go around fittings. I am all for minimizing heat loss in the pipes, given how much of it is seeping out of my uninsulated walls.

Dan_15

Thanks for the photo! I will look for those plastic fitting covers and do as you suggested.