Flue supports in void

[firemant]

Yeah true, although must admit I don't agree with the "ruling" on this situation. If you had any doubts about a flue failing in a void or out, it should be at least AR'D anyway, if it is secure, screwed and in a void where it can't be damaged, I find this less of a danger than in a loft where it can be easily knocked etc, but hey ho I don't make the rules haha


The FIV rules have nothing to do with damage being caused or otherwise. We are required to inspect the length of the flue, and this cannot be done in a duct. The hatches are to enable us to meet our obligations.

There are plenty of failed flue joints - not necessarily as a result of mechanical damage

 

[RoryD]

A flue must be supported every 1.8 meters or it's AR.

 

[ShaunCorbs]

A flue must be supported every 1.8 meters or it's AR.

thats maximum every m should be or every joint

 

[RoryD]

thats maximum every m should be or every joint

Correct

 

[newcastle phill]

I tend to fit every metre or section (if shorter)
Lots of MI's state per metre

 

[Ermintrude]

Open flue is 1.8m Max. Concentric is 1m

 

[arran197]

Flues must be supported at 1.8m or every change in direction before and after the bend. Unless the manufacturers instructions suggest otherwise.

Baxi for example, state that the flue must be supported at least every meter and before and after every change in direction, preferably supported on every section regardless of length. I fit them at every meter, depending on how rigid the flue actually is I may fit one on every section. Having said that, sometimes you physically can't get a clip on each section. In this case, there's not really much choice, you can't do the impossible.