I had my chimney liner and tee installed prior to receiving my rear-venting wood stove. Upon setting the stove on the hearth and attaching the flue collar, I am realizing that the tee is about ~3-4" short from being able to connect to the collar. What is the best way extend the tee? The tee has a crimped end. Rockford has a tee extender for $54 that slides into the tee but I am not sure if this will work for my application. any thoughts?
Need to extend the tee
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Does your tee have the 10" or 22" snout? If it is the ten inch, can you return it for a tee with the longer snout? The 22" snout can be trimmed to the proper length.
(broken link removed to http://www.rockfordchimneysupply.com/round_components.php)
(broken link removed to http://www.rockfordchimneysupply.com/round_components.php)
Unfortunately the tee is installed, wrapped, and surrounded by roxul. The installer used a 10" snout with a crimped end
i would still switch it out for a longer snout if not just a section of rigid ss pipe riveted fast will work. The least desirable option is to just use black pipe it will work but not what i would do
chimneylinerjames
Feeling the Heat
Yep you could use a piece of rigid pipe. it will go over the crimped end. Do not use black pipe. All pipe that is behind the wall needs to be SS.
What brand is the tee? If it has a removable snout with a hose clamp-type attachment, you can replace that. Replacement snout of the same brand should be a guaranteed fit. Or add some pipe as bholler suggested. Just make sure the pipe is the right size...same brand as the tee might be a safe bet but I would ask the seller, to be sure before pulling the trigger. At any rate, you're gonna have to tear into the install to some degree. Let that be a lesson to you. 
We've all been there. At least I have. 
We've all been there. At least I have. I assumed it was in a fireplace because they said they put the stove on the hearth But absolutely if it is hidden it needs to be ss
chimneylinerjames
Feeling the Heat
Yep your right, tee is probably just hanging thru the damper area. Black pipe is fine then, seems like a pretty simple fix then.
You need at least an inch to attach to but i usually do a bit more than that. then i just paint it black with stainless paint
Ok, so a 10 inch snout is what I'm getting. 9" of brick to go through so I don't think I'll be trimming any off the snout then.
I'll be using a masonry adapter from Rockford Chimney supply to use double wall stove pipe once it's in the room.
I guess I'll just crimp the snout and then run it into the masonry adapter then mortar the adapter into the thimble.
Sound correct?
I'll be using a masonry adapter from Rockford Chimney supply to use double wall stove pipe once it's in the room.
I guess I'll just crimp the snout and then run it into the masonry adapter then mortar the adapter into the thimble.
Sound correct?
No dont mortar the adapter into the crock mortar the snout in then attach the adapter. Personally i would get a longer one that is cutting it pretty close
Rockford said put the snout into the adapter and then mortar the adapter into the thimble.
Here's the adapter I've purchased.
![[Hearth.com] Need to extend the tee](https://www.hearth.com/talk/data/attachments/165/165290-076f5f9476307b0fe57aaa1ee9083dff.jpg?hash=psQ2QP3KDc "[Hearth.com] Need to extend the tee")
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I was reading Selkirks instructions with this adapter. It looks like you would mortar the snout in place and then slide the adapter into the snout.
Bholler you are correct and I think I miss understood what Rockford told me over the phone.
Thanks for your advise.
Do you have any suggestions on which refractory mortar to use when setting the snout in place?
Well we use chamber tech which is meant to be used to parge the inside of smoke chambers. We have found it holds up the best. But as far as i know it only comes in 5 gal buckets and is pretty expensive. So i guess any refractory cement will do or for that matter many times regular mortar will hold up as well as refractory cement.
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