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Fiberglass Pipe Insulation

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Tom_42
Tom_42 Member Posts: 63
in Strictly Steam
What can one use to seal up the exposed end of fiberglass pipe insulation on steam pipes? Is there some kind of safe tape, caulk, or mastic that can be use?

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  • ScottSecor
    ScottSecor Member Posts: 855
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    This is what our insulation sub-contractor uses. It's a white substance that is about as thick as mayonnaise. They literally paint it on the ends of the insulation (and occasionally drip a little on the brand new boilers we just installed).

    GroundUp
  • GroundUp
    GroundUp Member Posts: 1,907
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    ^^^^ "Pooky" as they say in the industry. Lol
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,524
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    That's the stuff. Fixes all my mistakes!!!!
    ethicalpaul
  • Tom_42
    Tom_42 Member Posts: 63
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    Is that stuff safe. Will it interact with the fiber lock that was used when the old insulation was removed? It’s an open basement where washer and dryer are.
  • GroundUp
    GroundUp Member Posts: 1,907
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    It's safe, water based mastic a lot like paint but thicker. Dries to a semi-pliable rubber/plastic hybrid texture. Probably wouldn't eat the stuff, but it's not the kind of nasty you can't breathe or touch. If you've ever been on a commercial jobsite, you know that crap will stick to anything and everything. Every ladder within 100 feet of the mechanical room has a gob or two on it
    ethicalpaulquestion
  • gerry gill
    gerry gill Member Posts: 3,078
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    ScottSecor said:

    This is what our insulation sub-contractor uses. It's a white substance that is about as thick as mayonnaise. They literally paint it on the ends of the insulation (and occasionally drip a little on the brand new boilers we just installed).

    yup, thats what we use also. Good stuff, just don't get it on your clothes :s
    gwgillplumbingandheating.com
    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

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