Flexi Flue Liner for Open Fire

ChrisC6

Hi all,

I am looking to install a flexi flue liner in an old stone cottage chinmey. It looks pretty narrow in places.

I know open fires required at least 8" flue liners but I don't think that will fit. Even a 6" flue might be tight by the looks of it.

Is it possible to use a 6" liner and squeeze it to a more oval shape to try get it to fit? Would that suffice?

Or if a 6" liner could fit down, would installing a glass door on the open fire be an option when it comes to regulations?

The fireplace is in the bedroom and I don't think I will be using it very often. There is damp/high humidity in the room and after I had open up the fireplace the humidity and the room felt drier and warmer. So I was thinking of keeping the fireplace open to pull out the damp air. The stone chimney, I'm sure has some holes in it so I was planning on installing the liner and filling around it with sand lime mix.

Anyone ever use flexi liner on old stone chimney and had trouble getting the right size?

Thanks

Furze99

Yep, we installed one maybe 30 years ago. Can't recall diameter off top of my head but was a bitch to get up to chimney pot level as there was a bend in the flue. Lots of pulling from the roof, pushing from below and cursing, a dirty job. If it fails, I'll be getting someone in to do the job again!!!!! But they are flexible to an extent and can be manipulated a bit. You probably won't know till you try.

ChrisC6

https://www.boards.ie/discussion/comment/119807961#Comment_119807961

Cheers!!

I'll be expecting quite a bit of cursing haha 😄

ChrisC6

https://www.boards.ie/discussion/comment/119807961#Comment_119807961

I was meant to ask, what type of insulation did you use?

Did you use that foil insulation wrap or just use a sand and lime mix or micafil?