Sealing Excel pipe

pellet0708 Posted By pellet0708, Oct 10, 2008 at 6:02 PM

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  1. pellet0708

    pellet0708
    New Member

    Jul 18, 2008
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    Loc:
    Maine
    Any comments about how I sealed my pipe? We had some smoke leakage out of the appliance adapter after initial install.
    We had a small bead of sealant so went back and loaded it up with more and that took care of it. While I was at it I sealed the gap between the outer wall and inner pipe that is down by the adapter.

    Someone made a comment that this needed to be open for air exchange but this pipe is not like the Selkirk where it is the fresh air space. I thought it was just double walled for cooling value. Only reason I put the sealant on was in case of internal joint leak. Figured it couldn't hurt.
     
  2. BignBeefy

    BignBeefy
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    Jan 21, 2008
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    Loc:
    Sandown,NH
    I sealed mine all up too.Most houses dont really need outside air and why let that tiny gap let in the cold. That pipe is fantastic and easy to clean since it comes apart so easily:)
     
  3. imacman

    imacman
    Guest

    When I installed my DuraVent appliance adapter on my stove, all I did was to put a piece of rope gasket into the gap between the outer and inner pipe down about 1/2 ", coated the rope with a bead of sealant, and pushed the adapter down as far as it would go onto the stove outlet. Drilled (3) 1/8" equally spaced holes through both pipes, and put sheet metal screws through to hold in place. Finished the rest of the pipe install, fired the stove up....no leaks.

    I know I have a different brand of pipe than you, but I can't imagine that their that different.
     
  4. RedHotinWesternMA

    RedHotinWesternMA
    New Member

    Oct 11, 2008
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    Loc:
    Western MA
    Hi -

    I just posted this question as a new thread, but since you are using Excel products too maybe you can answer my question: We’re installing a Lopi Leyden Pellet Stove today, and we are planning on using selkirk metalbestos 4” pipe with an Excel insulated wall thimble. In the interest of not burning down our house, what do you think about mixing and matching brands here? Everything seems to fit ok, its just that the selkirk thimble is not insulated and of course each manufacturer says to only use their products exclusively. What do you think?
     
  5. pellet0708

    pellet0708
    New Member

    Jul 18, 2008
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    Loc:
    Maine
    I would say as long as they fit together you are fine esp. since it is just the thimble. There is a lot of insulation in the excel thimble. It is when you try to mix and match the actual piping the fit might be off and cause problems.
    That's nice pipe you bought just a little more $ than we wanted to go.
     
  6. Gumbo

    Gumbo
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    Sep 13, 2008
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    Loc:
    Vermont
    Hi temp silicone at the joints inside the house takes care of any leakage. Once that cures I cover the joints with aluminum duct tape. No...not the duct tape that gets sticky and slimy with heat. The REAL duct tape that is actually a metal tape with an adhesive side, peel the paper backing off of one side and wrap the joints. It's probably overkill but its a real tight install and I never worry about it.
     
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