Vertical flues

[Ad_stoke]

Hi guys.
Quick Question (maybe not)...
Scenario.
If a Boiler was in a kitchen single storey and vertical flue goes up in loft space with flue clip just above boiler. Then the extension piece (about 30cm) is in the small roof space terminating through roof. If there is no flue clip on the small piece in roof space ...

Would you need another flue clip in roof space? What would you class that as? .. Can't see nothing in tech bulletin.... Loft space extension less than a meter....

Any experienced guys that can help?

 

[KingDoey]

If there is 300mm or less in the loft and no direction change I.e just a straight run out the roof and the flue is generally solid then I was always told not to bother with a bracket.

 

[lame plumber]

does it move is the question you need to ask?

 

[macka09]

Whilst we're on vertical flues. Went to a Worcester greenstar 25i today. Flue goes into loft with two 45' elbows then up through roof. It was supported just below the first 45 and again on the diagonal but not on the vertical section to terminal. No definitive answers in MIs. Is this an issue I didn't think so?

 

[Ad_stoke]

If you call the Manufacturers and ask them they will say you need clips on every Direction....

 

[macka09]

Why can't they just put in the instructions.

 

[GrahamM]

As lame mentioned....is there any movement?

Whilst we're on vertical flues. Went to a Worcester greenstar 25i today. Flue goes into loft with two 45' elbows then up through roof. It was supported just below the first 45 and again on the diagonal but not on the vertical section to terminal. No definitive answers in MIs. Is this an issue I didn't think so?

Worcester state flue joint collars must be screwed to add stability. And as a guidance should be supported every 1m or change of direction.

It is really a case by case basis.
Is there any movement? does it look sturdy enough?
If someone in loft was to bump the flue slightly when up getting xmas tree will the flue move?

 

[hammers4spanner]

A lot of it is common sense.

 

[GrahamM]

A lot of it is common sense.

You would think so!
Shocks me everyday the lack of common sense I come across.

 

[wattsie1987]

Adequately supported is what a engineer is looking for.

 

[macka09]

Was their a TB released recently covering this.