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  1. Biglumber

    Biglumber
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    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
     
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  2. BignBeefy

    BignBeefy
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    Did you caulk outside the house?
     
  3. HD41

    HD41
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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.
     
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  4. pete324rocket

    pete324rocket
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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

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    Use black silicone caulk. That will withstand the heat the best.
     
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  6. stoveguy2esw

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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
     
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  7. Biglumber

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

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    Lowe's and Home Depot in the caulk department. ACE Hardware back with the stove pipe stuff.
     
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  9. begreen

    begreen
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  10. Biglumber

    Biglumber
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    BeGreen, Thanks for the tip.
     
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