Connecting round to oval liner

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by debfrank, Feb 26, 2006.

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  1. debfrank

    debfrank
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    Installing a Hearthstone Morgan insert. New stainless 6" liner from stove connects to existing 6" by 8" oval stainless chimney liner which is mortared in above the smoke shelf. The new 6" round liner fits inside the oval (overlapping for a few inches). What do I use to seal the gap caused by the slightly larger oval liner? (There is good access from a door in the rear of the chimney, just above the smoke shelf, that was cut in when the oval liner was installed.)
     

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  2. Todd

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    Can't you install a 6 to 8 adapter so there's no gap?
     
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  3. debfrank

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    Don't think so. The existing 6" by 8" oval liner is mortared in at the base of the old chimney tile. I can fit the 6" round inside of it by slightly "squashing" it to an oval. The fit is snug, execpt on the two side where the 8" dimension of the oval liner is larger than the new 6" round coming from the stove.
     
  4. Todd

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    Take a look at www.hartshearth.com

    Give them a call and see if they have a oval to round adapter or they also sell liner insulation that you could wrap around to fill in the gap.
     
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  5. Sundeep Arole

    Sundeep Arole
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    If you have access to the place where the oval pipe is mortared in, you can mount another 6"l bottom plate onto the place where it is mortared and then stick your liner into the smaller opening.
     
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