Using both rigid & flex liner for an install?

[Stax]

I've asked this same type of question in one of my previous posts, but the title was oriented towards Lopi Declaration owners. Anyhow, this insert requires 15 ft of liner. My chimney flue to the unit would be approximately 14 ft. What is the opinion of the crowd in terms of both being used (rigid & flex) as it will need to extend out of the chimney one foot?

 

[jbrown56]

Hi,

My single wall rigid extends 3' out the top of my chimney. Through four seasons of use, I get very little creosote build up and clean the liner only once a year.

Jim

 

[Stax]

Does the single wall rigid run the length of the flue to the unit, or does it connect to flex somewhere?

 

[gpcollen1]

I have a flex liner through the flue connected to the rigid and up. Pokes out the top about 3 feet...

 

[cmonSTART]

A lot of liner companies are offering products to transition from flex to class A chimney.

 

[Hogwildz]

27' liner here.
5' of flex through the old damper and up through the transition, connected to double wall insulated the rest of the way up.
Love it, drafts great, cleans great. Glad I did it!

 

[Stax]

Thanks guys for your replies so far.

 

[Stax]

Here are some pics of the chimney & flues (Oil Boiler w/ Spark Arrestor & Ghetto"ly" Capped Fireplace Flue). The Oil Boiler flue will need to capped as the 57 year old York Shipley Oil Boiler died in early december. Then we got an air source heat pump. Hence me joining this site and demanding real heat.

 

[double-d]

The flexible liner typically will be less expensive and easier to install, especially if there are off sets in the chimney. There are 18" flue extenders that can be attached right to the flex liner top plate, and add your cap to that.rigid

 

[zzr7ky]

Hi -

I needed a few feet also. My install lookes like jbrown56's above but I made a transition from liner to one 3' section class A chimney. This also makes it really easy to walk up, remove, and clean from the top.