Insulated liner suggestions

[Wisneaky]

Score... Just found it for less at http://www.discountchimneysupply.com/catalog/item/8843184/10120106.htm

Anyone have any experience with discountchimneysupply.com?

I have never heard of that liner. I bought a duraliner for my install. Made by duravent. It is smooth double wall and insulated. Rated zero to combustibles. I installed 19' with cap, tee, thimble, and mounting plate for $1100

 

[ewang]

I just purchased the 20' kit. I'll report back once I receive and install it.

 

[bholler]

It is called forever flex so i will assume it is an olympia liner with their hybrid interior. It is a very good liner much better than the double layer stuff

 

[ewang]

So far I am super impressed with discountchimneysupply. They called to let me know it was shipping today and to confirm my order.

 

[donmac]

ewang: Nice score!
Glad you found this vendor. They are here in Cincinnati where I am, never found them before.
I think I'm going to go the same route as you with the pre-insulated hybrid in 316 alloy.
Please post your progress with your install and your opinion on this liner and this vendor.
I am thankful for your postings and the advice from site members especially bholler who has first hand knowledge of this product.
Good luck and thanks to all.

 

[donmac]

bholler:
Can you respond to this- talked to local company ewang referenced today. Person said the heavy liners(Armor flex and HS round flex) are not gas/liquid tight as is the newer generation liners such as Forever flex and the hybrid. I had not heard this before. Please comment. Thanks

 

[bholler]

bholler:
Can you respond to this- talked to local company ewang referenced today. Person said the heavy liners(Armor flex and HS round flex) are not gas/liquid tight as is the newer generation liners such as Forever flex and the hybrid. I had not heard this before. Please comment. Thanks

Well no they are not absolutely water tight. But if installed right side up there will be no issues at all. That type of line has been on the market for 30+ years with no problems when installed properly. And btw they obviously don't really know what they are referring to because the hybrid liner is exactly the same construction as the heavy wall just with thinner material. So if they are concerned about the heavy flex they should feel the same about the hybrid. Also regular light wall is not absolutly watertight either the only one that is ventinox with a welded seam.

 

[ewang]

I'm not sure I care if its water tight. If I properly install my chimney cap, I shouldn't have to worry about rain penetration.

All I care is the liner is listed to UL 1777
http://ulstandards.ul.com/standard/?id=1777

 

[donmac]

Bholler:
Thanks for clarifying- If I may confirm: Your earlier recommendations earlier in this post stand - with a first preference for heavy flex for heavy stove use and the pre-insulated hybrid for more infrequent stove use - am I correct?
If so, you have helped me make my decision. Many thanks

 

[bholler]

Your earlier recommendations earlier in this post stand - with a first preference for heavy flex for heavy stove use and the pre-insulated hybrid

well we don't use preinsulated we insulate ourselves but yes we always use heavy wall for woodstoves that will be the primary heat source. And switch to hybrid if it will not be used very heavy. I am by no means saying the light wall liners wont work they will for sure but they are not as durable.

 

[bholler]

I'm not sure I care if its water tight. If I properly install my chimney cap, I shouldn't have to worry about rain penetration.

As long as it is installed right side up water cant get out running down the liner whether it be from rain or condensation.

 

[donmac]

bholler-
Your last two posts helped me hear what I need to make a more informed decision. Your expertise is much appreciated!

ewang- you made an excellent choice. Please update after receipt and install. Based on your input, I will have all relevant info to pull the trigger- I'm tired of dragging this out but I want to get it right. Thank you for your research and info

 

[ewang]

well we don't use preinsulated we insulate ourselves but yes we always use heavy wall for woodstoves that will be the primary heat source. And switch to hybrid if it will not be used very heavy. I am by no means saying the light wall liners wont work they will for sure but they are not as durable.

My opinion is, unless you have a lot of experience with light or medium duty liners failing, the most truthful statement is: heavy wall liners are thicker.

 

[bholler]

My opinion is, unless you have a lot of experience with light or medium duty liners failing, the most truthful statement is: heavy wall liners are thicker.

I have seen all types of liners fail but many more light wall ones. The mid weight ones have not been out very long so i haven't seen one of them fail yet but i am sure i will. So yes my statement is truthfull

 

[ewang]

What do you think contributes to the failure?

Poor manufacturing?
Thin wall?
Improper wood?​

Also, what is the means of failure?

Corrosion?
Burn-out?​

My thought is that with the new EPA stoves, the emissions and creosote buildup (if burned properly) exerts much less wear and tear on any liner. So with proper operation, cleaning and annual inspection, all should be well.

 

[bholler]

What do you think contributes to the failure?
Poor manufacturing?
Thin wall?
Improper wood?

All of the above and more it can be from any number of factors but the thicker material will hold up longer to any of those things than the thinner stuff.

Also, what is the means of failure?
Corrosion?
Burn-out?

Either or or a tear from improper cleaning or bad install ect. havnt seen much corrosion unless it is from coal and that really isnt the liners fault. but thicker liners hold up longer to coal as well.

My thought is that with the new EPA stoves, the emissions and creosote buildup (if burned properly) exerts much less wear and tear on any liner. So with proper operation, cleaning and annual inspection, all should be well.

I agree with that but unfortunately many people don't burn the best wood don't maintain it properly ect. But regardless thicker material will be more durable.