Twin Wall Flue Through the Wall

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Nikos72

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• 1 Jun 2009

• #1

Hi,
I was hoping someone might know the following:

I want to fit a wood burner and will have to use a twin wall flue as we don't have a chimney. When I have the 135deg part of the flue on the wall support bracket, the angle will go through the wall and into the wall sleeve. Is this ok? I want it like this as I don't want to pack out the support and have the flue too far away from the wall.

Any help would be most appreciated.

 

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stuart45

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• 1 Jun 2009

• #2

If you mean the 135 degree tee on the external wall, then it usually goes into the wall sleeve.

 

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Nikos72

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• 2 Jun 2009

• #3

Cheers Stuart.

But won't that mean there will then be a flue join within the wall, which seems like it should be avoided according too the regulations?

 

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stuart45

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• 2 Jun 2009

• #4

To avoid a joint in the wall you will have to have the flue a fair distance from the wall. You should seal the between the pipe and sleeve with a fireproof rope. It does say in the Regs that you can't have a join within the thickness of the walls, but I can't see how it can be avoided without having the flue well off the wall. It's a few years since I've helped put one in as they are done by HETAS engineers now so it might be worth double checking with one. The joint will be be near the face of the wall.

 

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Nikos72

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• 3 Jun 2009

• #5

Yeah, as you say, it seems unavoidable to have the join within the sleeve/wall, or, the flue being so far off the wall it'll look ridiculous, and something I don't want.

Well, it seems I have alot of checking up to do yet, so I'll keep ticking off the list.

Thanks again Stuart.