Woodburner - Lining a chimney

Bury the Trash

Member
Mixed Farmer
Have you looked at volcanic lining ,,it's a sock that drops down the flue ,sealed and then inflated ,,then they pour a sealer down around the sock ,in 24hrs it's set solid,deflate the sock and the flue is permanently fixed ,no loose bricks and you are left with a perfectly smooth flue.
Pumice ? that will take a good hard sweeping i think im right in saying? quite interested in it tbh. exspensive for a long length tho. :unsure:
 

Lincs Lass

Member
Location
north lincs
Pumice ? that will take a good hard sweeping i think im right in saying? quite interested in it tbh. exspensive for a long length tho. :unsure:
Aye ,thats the stuff .

This is the company that fixed my rayburn ,showed me the video of how the slurry liner is pumped in .
 

einstein

Member
Location
Rutland
Any tips on sweeping a lined chimney would be much appreciated. Had mined lined a couple of years back...
Is it just a case of pulling the burner out of the way and using drain rods and a brush thats a good for for the size of the liner?
Before they were lined i would brush until it came out of the chimney pot. Obviously cant do that now as there is a cowel on top?!
approx 13 meters long from memory.
 

Bobthebuilder

Member
Mixed Farmer
Location
northumberland
should be a plate on side of flu just above where it comes out of burner, take that off put brush and rods in there along with hoover pipe, tape it up then push n twist rods up n down with hoover running to take away soot, have someone out side checking for brush at top, count your rods as they'll be 1m long
 

Ffermer Bach

Member
Livestock Farmer
should be a plate on side of flu just above where it comes out of burner, take that off put brush and rods in there along with hoover pipe, tape it up then push n twist rods up n down with hoover running to take away soot, have someone out side checking for brush at top, count your rods as they'll be 1m long
The chimney sweep has a camera on the rods to look at the state of the flu and how clean it is after he has finished. He told me, if it is really blocked with tar, they can replace the brushes with chains, but he doesn't like doing that as it can damage the lining.

I thought my logs were really dry, but got a moisture meter from Amazon, I split a log and tested it, between 21 and 22% moisture, so obviously not as dry as I thought!
 

einstein

Member
Location
Rutland
Can anyone recommend a set of rods for sweeping liners..prices seem to vary from £50 to £500!!
is it worth getting the ones that click togethr rather than screw?
 

Dry Rot

Member
Livestock Farmer
Can anyone recommend a set of rods for sweeping liners..prices seem to vary from £50 to £500!!
is it worth getting the ones that click together rather than screw?
YES! I started using ordinary drain rods. My flue is only 6.5m. I pulled the rods out leaving 2m of rods and a brush stuck up the flue. Managed to get the separated section out by making a screw end and entangling the 'lost' section, but it had me scratching my head for ideas.

I have now got a cheap set of nylon rods that clip together off Ebay. You realise you get what you pay for when clipping/unclipping each section. My tool kit includes a couple of mole grips, a punch, and a hammer -- but then I am in no hurry.

Screen the door opening of the wood burner with a plastic bag agro-taped onto the stove with a slit cut in it to insert the rods. Most stoves can be swept through the door. Rods are spun rapidly with an electric drill (which is why clipping is better than screwing) with a gizmo on the end with nylon cords. Best to get the flu hot occasionally so the tar 'glazes' and fragments when hit by the cords.
 

Mur Huwcun

Member
Livestock Farmer
Location
North West Wales
The chimney sweep has a camera on the rods to look at the state of the flu and how clean it is after he has finished. He told me, if it is really blocked with tar, they can replace the brushes with chains, but he doesn't like doing that as it can damage the lining.

I thought my logs were really dry, but got a moisture meter from Amazon, I split a log and tested it, between 21 and 22% moisture, so obviously not as dry as I thought!
Unless you keep a stack of logs in the house by the burner (can’t here as most of our logs have woodworm) you will struggle to maintain under 20% all winter in my experience
 

Gong Farmer

Member
BASIS
Location
S E Glos
I replaced a fireplace with a Jotul 118 wood burner last year. The flue liner is only 6.5m so not insulated and goes diretly to the sr\tove via a 90 degree bend. The only problem is water entering the flue during rainstorms, exiting at the bend, and forming a small puddle in the hearth. Not sure what to do. Ignoring it works fine meantime.
Just had our flue liner replaced, £1200. When previous owner had stove installed, fitters put in a 'gather' just above the register plate (like a big funnel or cooker hood) to collect smoke etc and 'encourage it' up the chimney. It still meant there was a break in the system and water vapour condensed on the gather and ran down the edge into the cavity outside the flue, coming through the plate and into the hearth. Described on other forums as 'watery Guinness'. Smell was awful, we had no choice but to get it fixed.
Chap who replaced it said the gather system was legal but not necessarily safe. It also allowed soot to collect on the plate which was a fire risk.
 
Last edited:

Still Farming

Member
Mixed Farmer
Location
South Wales UK
Just had our flue liner replaced, £1200. When previous owner had stove installed, fitters put in a 'gather' just above the register plate (like a big funnel or cooker hood) to collect smoke etc and 'encourage it' up the chimney. It still meant there was a break in the system and water vapour condensed on the gather and ran down the edge into the cavity outside the flue, coming through the plate and into the hearth. Described on other forums as 'watery Guinness'. Smell was awful, we had no choice but to get it fixed.
Chap who replaced it said the gather system was legal but not necessarily safe. It also allowed soot to collect on the plate which was a fire risk.
So what you got now?
Stove, vitreous meter long pipe through registry plate and flexi liner up is it.
 

Watsonius

Member
Arable Farmer
Hi

I have a house with a large (25kw) multi fuel wood burner which connects into a brick chimney with no liner.

I have run it for nearly 12 months (not lit for a couple of months during summer) and was planning on getting the chimney swept soon. The chimney has now become blocked and is no longer drawing, this is likely to be soot/klinker.

I will have the chimney swept but would installing a liner prevent this in the future? Are they essential for large woodburners?

I will now aim to have the chimney swept at least every 6 months.

Cheers.
We have a wood burner and the chimney is not lined with no problems. We only burn very dry wood and have the chimney swept every year. Also the chimney is about 13m tall and draws almost too much, a chimney that doesn't draw will always cause problems
 

Still Farming

Member
Mixed Farmer
Location
South Wales UK
Seen this come up on net???
Wtf??
FB_IMG_1697881085755.jpg
 

Andy26

Moderator
Arable Farmer
Location
Northants
Can anyone recommend a set of rods for sweeping liners..prices seem to vary from £50 to £500!!
is it worth getting the ones that click togethr rather than screw?

I've got something like the above, paid £150 from a reputable stove online retailer, but I suspect its identical to the eBay one above.

Makes it easy to sweep a chimney liner that goes around bends, as most do.
 

Northern territory

Member
Livestock Farmer
I know they are very inefficient but have two living room-lounges after big house renovation, considering log burner in one and maybe open fire in the other. Underfloor heating as well so not that bothered about the inefficiency. Always had open fires as a kid and there is something mystical about them.
 

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