I have a Cawley-Lemay 800 and reconditioned it this spring. I am ready to put it back in service but I have an issue. My stainless steel chimney insert that was installed previous to owning this house is 8.5" at the thimble. I have no clue why but I don't want to have to order a specially made Increasing adapter. I just want to use stock 8" parts.
So, what I want to know is... Would it be ok to take a regular 8" Thimble and place it inside the current thimble, backfilling the gap between the two with fireplace mortar or maybe a combo of fireplace sealant and door gasket wrapped around that space?
This is obviously frustrating and I see no need in having it re-piped correctly. I just don't see the return on investment of that. It seems to me as long as it's sealed, that it will be safe.
So, what I want to know is... Would it be ok to take a regular 8" Thimble and place it inside the current thimble, backfilling the gap between the two with fireplace mortar or maybe a combo of fireplace sealant and door gasket wrapped around that space?
This is obviously frustrating and I see no need in having it re-piped correctly. I just don't see the return on investment of that. It seems to me as long as it's sealed, that it will be safe.
