How thick is my liner? Reuse?

[Tjm]

Deciding if my liner should be replaced with a new stove. It’s 6” flex installed in 94 without insulation. Good news is I have confirmed I have enough room for the insulation. So pull it and insulate or go all new? I’m leaning toward the latter. It’s probably been run a bit toasty a few times? There is some discoloration. Can you tell the wall thickness from a pic? I’d say it’s 1/16” max, but probably a bit less. I thought a dealer mentioned 1/4”
Wall thickness “lifetime” liner, but that seems crazy thick...

 

[BigJ273]

I’m no expert, but.....if it’s been in use for 27 years, I would prob replace it with an insulated liner. I’d say u got your money out of it. They’re not too expensive, especially if you get another 30 years out of the new one. Just my thoughts.

 

[kennyp2339]

Does the new stove have the same height / flue collar location as the old stove? If the new stove has an angled collar, or is shorter you may need a new liner anyway to avoid having to do a splice or customer appliance adapter mount.

 

[Tjm]

Does the new stove have the same height / flue collar location as the old stove? If the new stove has an angled collar, or is shorter you may need a new liner anyway to avoid having to do a splice or customer appliance adapter mount.

Height wise I think I’d be ok especially after cutting out the original smoke shelf and straitening it out. Might need to be shortened. I assume I’ll go new but had one chimney guy say it’s a waste of money cause that is a “lifetime” liner.

 

[brenndatomu]

FYI, stainless discolors when heated...and does not need to be overheated to do so.

 

[bholler]

Height wise I think I’d be ok especially after cutting out the original smoke shelf and straitening it out. Might need to be shortened. I assume I’ll go new but had one chimney guy say it’s a waste of money cause that is a “lifetime” liner.

You have a heavy wall flex liner. And yes it is a "lifetime" liner. But the problem is the lifetime of that liner as determined by most manufacturers is 30 years. I would replace it

 

[Tjm]

Thank you!