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A Plumber Told Me

fxrgrunt
fxrgrunt Member Posts: 157
A plumber was in my house working on something and when he looked at my steam boiler he said I shouldn't have the near boiler piping insulated down to the T because it is a fire hazard. Any truth to this?

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,859
    Depends on what it's insulated with, of course. Old newspapers? Might be. Fiberglass? No.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    fxrgrunt
  • fxrgrunt
    fxrgrunt Member Posts: 157
    @Jamie Hall it's fiberglass
  • mattmia2
    mattmia2 Member Posts: 10,945
    Depends on there the vent is too. Ordinary fiberglass should be considered a combustible material for clearance to the vent. The outer jacket and binder are flammable.
    fxrgrunt
  • jacobsond
    jacobsond Member Posts: 90
    Now what is the temperature of the pipes with steam in them? Pressures your running less than 300. Probably less than 250. Your insulation going to catch fire at 250 degrees? Not very likely. Tell your plumber to just deal with gray water.

    There was an error rendering this rich post.

    IronmanfxrgruntEdTheHeaterMan
  • dopey27177
    dopey27177 Member Posts: 887
    Typically in a home type steam boiler the pressure is set well under five psi. At 5 psi the temperature of the steam is 227 degrees. That temperature is far less than the combustion of paper which is 480 degrees.

    The fiber glass insulation will not burn or melt until the temperatures reach 1000 degrees f.

    Your plumber is some what in the dark about the safety of the use of fiber glass insulation.

    To kinda prove my point, when the boiler is operating and making steam touch the covering near the T that is in question, you will be surprised at how little heat is given off by the covering.

    Jake
    fxrgruntethicalpaul
  • fxrgrunt
    fxrgrunt Member Posts: 157
    I figured he was not correct but I wanted to make sure I wasn't just being ignorant.