Pellet install

Biglumber Posted By Biglumber, Jan 24, 2008 at 12:49 PM

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  1. Biglumber

    Biglumber
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    Jan 19, 2008
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    Colorado
    I'd like to seal the thimble gap(area between the thimble and the pipe passing thru) with something to block the draft coming in the house. I'm using pellet-vent double wall(simpson).
    Any recommendations?

    TIA
     
  2. BignBeefy

    BignBeefy
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    Jan 21, 2008
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  3. HD41

    HD41
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    Jan 11, 2008
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    I found painters caulk is adequate to seal edges of the wall plates to the siding outside, drywall inside and for inlet tubing, minimal heat in these areas. Suggest High temp silicon sealer available at hardware and building supply stores for the double wall exhaust pipe to the wall plates. No need for anything like furnace cement as with wood burning stoves. As a temporary stopgap I stuffed some aluminum foil seal around to the pipe because that is what I had.
     
  4. pete324rocket

    pete324rocket
    Feeling the Heat 2.
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    Nov 11, 2007
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    Seems to me I was going to buy special fireproof packing material but realized it wasn't that hot and used fibreglass insulation packed tightly since loosely doesn't stop any air-assuming you mean between pipe and thimble.Someone say so if this is bad advice but it works for me.
     
  5. jtp10181

    jtp10181
    Minister of Fire 2.
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    Feb 26, 2007
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    Use black silicone caulk. That will withstand the heat the best.
     
  6. stoveguy2esw

    stoveguy2esw
    Minister of Fire 2.
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    Nov 14, 2006
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    the area between the pipe and the inside of the passthrough thimble were not intended to be filled, this is a standoff for the clearance to combustibles for the pass through of the pipe. better to seal the seams around the pipe inside and out with high temp rtv, i would strongly suggest contacting simpson duravent and checking before inserting any materials into that void. number for their tech line is 800-835-4429, or e mail them via the contact us at www.duravent.com
     
  7. Biglumber

    Biglumber
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    Jan 19, 2008
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    Thanks guys. I won't be rock wooling the thimble. Any ideas where I can find this high temp rtv?
     
  8. BrotherBart

    BrotherBart
    Hearth.com LLC Mid-Atlantic Division 2.
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    Nov 18, 2005
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    Lowe's and Home Depot in the caulk department. ACE Hardware back with the stove pipe stuff.
     
  9. begreen

    begreen
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    Nov 18, 2005
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  10. Biglumber

    Biglumber
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    Jan 19, 2008
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    BeGreen, Thanks for the tip.
     
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