Found out my liner isn't one piece

[Soundchasm]

Howdy All,
Old faithful downstairs is a 79 Nashua. I was looking further up the flue than usual and saw a weird ring of creosote with a drip coming down the side. Of course I have no idea what decade it occurred. I've been running it since 02.

I have Roxul I plan on sticking up there and there are two concerns.

1. The join is below where the Roxul will go so I'll be able to keep tabs on it. I'm mainly mortified that I've been handling it like it's one piece when I clean it. It's held together with three screws. Is that enough? Should I replace them and start over?

2. I found creosote dust in the bottom of the fireplace. The unit is a free-stander. I know I've swept that cavity before and the pile wasn't near the liner-join. I'm sure my annual professional sweep is knocking it down from the top. He's due here pretty soon, so I've cleaned the pile up and if it reappears, then I know where it's coming from.

So question #2 is if I stuff Roxul up into the cavity, what happens if more creosote gets knocked down from a top-down cleaning? Maybe a gallon might collect over ten years? Who knows?

Thanks for your thoughts.

 

[Oregon aloha]

My liner is also in two parts, but there is a clamped on coupler with added sealer holding the two parts together. I think if I were you I would pull the liner and repair the joint. If creosote can get through so could fire if a chimney fire occurred that would ignite the creosote outside the liner.

 

[cableman]

That doesnt look like it was joined together correctly. I would think a connection that goes over the top piece and into the bottom piece is needed. Something like an appliance adaptor which goes on top of the stove.

 

[bholler]

yes i agree it is not done correctly. It needs a proper coupler and rivets or band clamps not screws they do not hold well in light wall liner at all

 

[mellow]

https://www.rockfordchimneysupply.com/round-liner-to-liner-quick-connector.php

 

[Soundchasm]

Thank you all for the excellent advice on the coupling. It's always nice when others have done all the hard work researching this stuff. I'll order the liner-to-liner-connector and get it installed pronto.

Any thoughts on creosote getting knocked down on top of the Roxul after I stuff some up in there? Maybe I'll put a layer in up at the very top so it'll catch anything that falls and I can clean it up there.

 

[bholler]

Any thoughts on creosote getting knocked down on top of the Roxul after I stuff some up in there? Maybe I'll put a layer in up at the very top so it'll catch anything that falls and I can clean it up there.

Install the liner correctly with the proper components and there will be no creosote falling

 

[BrotherBart]

^^^

What he said.

 

[Soundchasm]

Thank you guys. I've got the coupler ordered. I'll try to get up there and take a look at the top. It's amazing what you don't know until you know it...

 

[Soundchasm]

The sweep came by today and when I showed him the join, he said he'd been following the guys who did this work all week!

I told him I had a coupler ordered and he said he'd come back and get it installed with rivets and everything. This makes me really happy. And the creosote collecting at the bottom wasn't coming from the top - it was flaking out through that piss-poor join after getting knocked loose during cleaning.

This may well be one of the most important revelations ever... I feel pretty lucky.

 

[BrotherBart]

Is that an oval to round adapter piece?

 

[Soundchasm]

Is that an oval to round adapter piece?

The item description used the word "round". What had me scratching my head was the "male to female" bit. That's probably OK when it come to stove pipe...

 

[Soundchasm]

The sweep got it done today. It was a really tough assignment and I felt guilty because there was little for me to do and the space was nearly impossible. But this guy nailed it, or literally riveted it. The thing had hose clamps, and he reinforced the join with rivets, and then he put in some "stove cement"(?) on the inside of the joint to make it airtight.

After he got done I was finally able to stuff two bats of Roxul up there. I cut it into smaller pieces and shoved till I couldn't shove no more. What a relief.

 

[mellow]

Good deal, that will last for many many years (or sweeps, whichever comes first).