Patching roof after removing a Log Burner flue 1

minermick · 23 Jun 2020

Burner is old and beyond repair and we want to take it out and replace with a simple and quick to put heat into the room Electric Fire.
I've done all types of diy but this is a first and I would welcome any guidance please on the order of work etc.
We're in a bungalow so I can cap off the flue outside without any probs hopefully, but its the flue onto the top of the burner i'm unsure about.
The burner is in a fireplace with a register plate above.
If it was installed correctly, should the flue be supported inside the chimney or would it be "supported" at all? Its got a removable collar round it just below the register plate.

Two pics attached of burner in-situ and any guidance on how it "should" have been installed will give me an idea on what to remove first.

Thank you in advance for any help.

Burnerman · 23 Jun 2020

Just a couple of things to think about, Mick......
I guess your flue is lined? Have it swept before the burner is removed.
Also, chimneys do require some ventilation to prevent damp - you can buy cowls that look after the top but think how you can get some draught from the bottom.
Anyway, the liner clips onto the stove pipe just above the register plate so with the burner out, gently drop the register plate and unclip it.......the liner wont fall through and maybe you could let the open end rest on the plate?
You can either block the liner or not, but you ideally need ventilation to head up the flue......maybe you could use the hole in the register plate to do this?
John

minermick · 24 Jun 2020

Thanks for the useful info John.
Flue is lined and sensible to have it swept before taking burner out. I'll use the register plate and the hole can serve for a vent as you suggest.
My main concern was not knowing how the flue was "supported", was it sitting on the top of the burner ?
Hope to get it done inc sweep over next few weeks.
Thanks again
Mick

lostinthelight · 25 Jun 2020

If its a flexable liner it should be suspended from a hanger at the top of the chimney

Burnerman · 25 Jun 2020

In reality I find that most liners hold themselves in place by snagging on the walls of the chimney, but no doubt brackets are available.
Some installations also back fill with vermiculite which is messy once the register plate comes down!
John

minermick · 1 Jul 2020

Thanks for all the helpful info fellas.
Does anyone know where I can get a Cap for the Flue, (pic attached?
Lot of info on YouTube and elsewhere for terracotta flues but I can't find a Cap that is designed for or can be used on S/Steel (or whatever metal their made of) Flues.
Thanks, Mick

Burnerman · 1 Jul 2020

Thats a stainless twin wall flue Mick - I can’t recall seeing a cap for these but the likes of fluesystems.com could help.
One compensation though, the lengths are bayonet screw connections to eachother so are easy enough to remove by turning anticlockwise slightly.....makes access easier.
Have you thought about removing the whole thing?
John

lostinthelight · 1 Jul 2020

If youve no intention of using I would certainly take it down even if its only to get rid of that lot above the roof which does look a bit precarious even if its top two sections , is it only a strap holding?
Twin wall flues should be hung or supported by ceiling ,floor or rafter supports so there is no weight on the stove as that isnt load bearing.
Edit:
I see stove is in an original fireplace, can you see where the twin wall starts as it may have one of these on it twin wall above with flexie below.
https://www.fluesupplies.com/5-twin-wall-to-flex-anchor-plate-adaptor.html

Nige F · 2 Jul 2020

I can't see a brick chimney coming out in a lead flat roof - I'll bet that's s/steel all the way up.

datarebal · 2 Jul 2020

micktheminer said:
Does anyone know where I can get a Cap for the Flue, (pic attached?
Lot of info on YouTube and elsewhere for terracotta flues but I can't find a Cap that is designed for or can be used on S/Steel (or whatever metal their made of) Flues.
Thanks, Mick

Easiest way , pull out pipe , get a flexible lead slate but do not cut the hole. swap it with the one you have.

minermick · 6 Jul 2020

Thanks for all the helpful info fellas.
I couldn't find a cap for the flue anywhere, I could possibly have had one made but I had a chat with very helpful "fluesystems.com" and,
over the weekend, i took the burner out (two man job), took the top two of the three sections off the flue and and capped the bottom section using the cowl from the top.
I had to the break the register plate to get it out and would be grateful for any tips on what to replace it with taking account that we'll be using an electric fire/heater in the fireplace, (more to the front than the log burner). Would Hardiebacker board or the like be suitable?
Thanks again, Mick

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Patching roof after removing a Log Burner flue 1

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