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Shed
New Member
4 Posts
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 Posted -
10/10/2007
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12:58
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Hi,
Just bought a new chiney for my narrowbaot. Never changet it before. Can anyone tell me what the stuff is that is used to pack the chimney. Currently there is a type of putty that is wedged between the flue and the collar, but it is a bit patchy (may explain a small leak that I have had). I wanted to redo it bit don't have a clue what is. Any advice would be greatly appreciated!
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Callunna
Revolving Grey Blob
3044 Posts
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 Posted - 10/10/2007 : 16:09
Hi Shed and welcome.I bet Thomo knows the answer to this one. He can be summoned from the ether by cries of: "Art theer, lad?" I see you're in London - not sure if the above works with a non-Barlick accent but it's worth a try. |
Shed
New Member
4 Posts
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Posted - 10/10/2007 : 16:46
Hi Calluna,
Thanks for the welcome message.... lets try to summon Thommo...
'Are you there my lad' ... you're right it doesn't work with a southern accent!
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Stanley
Local Historian & Old Fart
36804 Posts
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Posted - 10/10/2007 : 18:29
I'm sure Pugwash will see this eventually but all you need is something that is fireproof and can be packed into the gap. In the old days it would be asbestos string but it's illegal now. There will be a substitute made of ceramic fibre. Slag wool or fibreglass roof insulation rammed in with a blunt ended proder will do. You used to be able to get some fireproof putty called Pyruma which will do. Look for your nearest wood burning stove or Aga specialist. They have this problem all the time packing the joint where the pipe comes out of the stove. They'll be able to fit you up with something more modern perhaps.
Stanley Challenger Graham
Barlick View
stanley at barnoldswick.freeserve.co.uk |
Doc
Keeper of the Scrolls
2010 Posts
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Posted - 10/10/2007 : 20:17
B&Q sell "Fire Cement" in small tubs, I have used this on my wood burner before, it goes on like putty and sets rock hard once its been heated up.
TTFN - Doc
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TOM PHILLIPS
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Posted - 10/10/2007 : 21:03
Thats the stuff Doc,its easier to obtain these days ,due to the popularity of wood-burning stoves,if not B&Q ,try the people who suply the stoves...
"Work,the curse of the drinking class" |
Stanley
Local Historian & Old Fart
36804 Posts
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Posted - 11/10/2007 : 07:20
Shed, the thing to remember is that if the joint is outside the cabin a slight leak is no danger. However, the reason for aiming for as good a seal as you can get is that the more airtight the connections the better the pull on the fire and this makes sure there is negative pressure in the combustion space and no gas getting into the cabin. Your biggest problem with a stove on a boat is that the chimney is too short to give a really good draught so anything you can do to make the joints airtight is a good thing. I know that the chimney inside the cabin is a good radiating surface but insulating it efficiently raises flue temperature and improves the draught. Always remember that it's quite amazing with borderline draught situations how a light coating of soot on the inside of the flue can spoil the draught, shove a flue brush down frequently!
Stanley Challenger Graham
Barlick View
stanley at barnoldswick.freeserve.co.uk |
thomo
Barlick Born Old Salt
2021 Posts
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Posted - 11/10/2007 : 09:56
Yes i'm ere,recovering from a nasty dose of gastro wotsit. Chimneys a la boat, the external part of this is usually detachable to allow for removal whilst transiting tunnels etc, this detachable section sits on top of the "chimney collar" normally fixed to the boat roof by two bolts. The underside of the flange on this collar as an anulus (ring groove) cast into it to accomodate the sealant, Butyl Rubber is good for this job as it does not dry out and thus remains flexible. All other joints in the flue structure can be made with a heat resistant cement of the non setting variety, any large gaps first having been made up with fibreglass rope. Hope this is of some help, regards, Thomo.
thomo |
Callunna
Revolving Grey Blob
3044 Posts
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Posted - 11/10/2007 : 11:37
See - told you he'd emerge when called sweetly! Hope your gastro wotsit is fully cleared up now, Peter. No probs about you not being able to view the boat last Saturday. |
Shed
New Member
4 Posts
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Posted - 11/10/2007 : 12:38
What a friendly forum you have!
Thank you everyone. I really appreciate the advice. Hope I can return the favour one day.
Take care, Shed xx
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Stanley
Local Historian & Old Fart
36804 Posts
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Posted - 11/10/2007 : 17:37
Shed! Don't go away! Look at some other top[ics (Shed Culture?) and join in.
Stanley Challenger Graham
Barlick View
stanley at barnoldswick.freeserve.co.uk |
Shed
New Member
4 Posts
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Posted - 11/10/2007 : 18:20
Don't worry I am not going anywhere. Got a feeling I might find all this a bit addictive.
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Mercury
Regular Member
233 Posts
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Posted - 11/10/2007 : 19:22
Good to see that Thomo knows his annulus from his elbow!!
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Stanley
Local Historian & Old Fart
36804 Posts
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Posted - 12/10/2007 : 08:26
Shed, you never said a truer word........
Stanley Challenger Graham
Barlick View
stanley at barnoldswick.freeserve.co.uk |
belle
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Posted - 12/10/2007 : 10:56
I hope you feel better soon Thomo...Shed, I only just read this post, and am sure Thomo has told you all you need to know, but I will ask Deadly for anything he can add when he gets home, he fits stoves most days, so will have an idea!
Life is what you make it |
Chimney
