Flue bracket regulations

[Joef]

The flue runs up from the boiler into the attic. There are then two 45 degree elbows before the flue runs out to the rroof.The flue runs parallel from the boiler to the bit going out of the roof with an angled bit in-between. Where by regs should the brackets go and how many will be needed?

 

[sammathias]

Usually just before it exits the roof I would fit a bracket and probably one in the middle section

 

[Harvest Fields]

I gather your boiler has been turned off? Can you also post a picture of the flue above the boiler please

 

[Joef]

I only went to look at the flue today .It was serviced and the owners were advised to add brackets to bring it up to regs. Whoever serviced the boiler didn't turn it off and allowed it to run as it has been since it was installed a few years ago.

 

[Harvest Fields]

Are you Gas safe registered?

 

[Stu-B]

Naughty service engineer.

 

[Joef]

I'm not gas safe registered. I went to do a few other jobs at the house and was asked about the flue brackets whilst I was there. I said I'd ask and see exactly what needs doing.

 

[Aire]

I'd want 3 clips on that. One before each 45 and one as it exits the roof

 

[Harvest Fields]

I'm not gas safe registered. I went to do a few other jobs at the house and was asked about the flue brackets whilst I was there. I said I'd ask and see exactly what needs doing.

Appreciate the honesty. I’m with Craig 3 brackets for me too mate.

 

[Joef]

I'd want 3 clips on that. One before each 45 and one as it exits the roof

View attachment 37959

Thank you. That sounds like solid advice.

 

[Joef]

Appreciate the honesty. I’m with Craig 3 brackets for me too mate.

Thanks for the confirmation. Three brackets it'll be then.

 

[ShaunCorbs]

Every meter and every change of direction so at a min 3 brackets required

 

[Stu-B]

Yup, 3 brackets plus i’d be looking to get same manufacturer as flue. That cheeky strap band stuff ain’t allowed.

 

[Harvest Fields]

Yup, 3 brackets plus i’d be looking to get same manufacturer as flue. That cheeky strap band stuff ain’t allowed.

Who said that it isn’t?

 

[Stu-B]

The gas safe chap said so when my bro-in-law had his first assessment about 8 years ago, vokera compact with a vert flue.

 

[Harvest Fields]

The gas safe chap said so when my bro-in-law had his first assessment about 8 years ago, vokera compact with a vert flue.

Depends how it is ran. I would never use it. But if it done correctly it should be fine.

 

[Stu-B]

That’s not what he said, plus why would you anyway? Doesn’t give off the right impression in my book, spend a few quid more and the job is bob-on.

Right = Right.

 

[ShaunCorbs]

Depends how it is ran. I would never use it. But if it done correctly it should be fine.

Needs to be manufactured approved method strap banding isn’t

 

[Harvest Fields]

I’m sure I saw a bulletin some where that said as long as it goes around the flue and is tight to opposite beams it is ok. I’m not that bothered anyway as I always use Worcester flue brackets. I was just saying that I’m sure I saw it somewhere.

 

[firemant]

Strapping is not allowed.

You need a bracket on each stretch as a minimum

You also should have a bracket at the top, as it exits, in addition to the others.

So, technically, 4 brackets as a minimum.

The whole structure must be perfectly rigid, otherwise more may be required (speaking generally, probably not an issue in this case)

 

[Harvest Fields]

I do like a good debate

 

[king of pipes]

As above 3 brackets minimum manufacturered by vokera and fitted as MI straighten the flue up repair the roof felt where it passes through the roof . Kop

 

[EvilDrPorkChop]

Also had two Gas Safe inspectors just recently tell me the same thing, Strapping is not allowed and has to be a proper flue clip on every length of pipe. We've always used clips anyway as I hate the strapping so didn't matter, but i've seen many that have been strapped.

My view is that if you go to a job that's old and it's strapped and adequately supported & secure then it's fine. But on any new installations they should be flue clips.

Getting back to the OP, needs 3 clips on that flue.

 

[king of pipes]

No strapping it must be a proper manufacturerd bracket fit for purpose , 4 on this Intergas flue . Tkop

 

[richard978]

The flue runs up from the boiler into the attic. There are then two 45 degree elbows before the flue runs out to the rroof.The flue runs parallel from the boiler to the bit going out of the roof with an angled bit in-between. Where by regs should the brackets go and how many will be needed?

View attachment 37956

A clip at every joint and where it exits would do it

 

[JohnnyM]

Standards state 1.8 m and any change of direction intervals to ensure whole system is adequately supported.

 

[Harvest Fields]

Standards state 1.8 m and any change of direction intervals to ensure whole system is adequately supported.

MIs may say differently though mate and MIs are like God.

 

[JohnnyM]

So they are

 

[Millsy 82]

I always just put on what ever I've been given so baxi supply 1 per length plus 1 for the vertical terminal so I'd put 3 on that if it still feels loose I'd chuck another on.

I always thought it had to be 1 per length and every change of direction but I have no idea where that came from so don't quote me on that as I may of just dreamt that.

And I also thought you couldn't use banding anymore. Was told that by a bg inspector when I subbed to them years ago and also by the gas safe inspector when he saw it on the van.

 

[firemant]

MIs may say differently though mate and MIs are like God.

No they are not. Regs are legally superior to MI’s contrary to the well held assertion.

 

[ShaunCorbs]

No they are not. Regs are legally superior to MI’s contrary to the well held assertion.

Manufacturer instructions over rule regs

 

[Harvest Fields]

No they are not. Regs are legally superior to MI’s contrary to the well held assertion.

What world are you living in?

 

[Harvest Fields]

Manufacturer instructions over rule regs

Always have and always will.

 

[firemant]

What world are you living in?

The real one. Where one does not assume a statement is true because it is oft repeated

 

[firemant]

Always have and always will.

No. They don’t.

 

[Aire]

I was always under the assumption manufacturers requirements overrule regs. This is only what I've been told though, probably the same as others. @firemant can you put a link to either prove your statement or disprove HF's?

 

[Harvest Fields]

I was always under the assumption manufacturers requirements overrule regs. This is only what I've been told though, probably the same as others. @firemant can you put a link to either prove your statement or disprove HF's?

Absolutely 100 % happy for him to do that.

 

[firemant]

I was always under the assumption manufacturers requirements overrule regs. This is only what I've been told though, probably the same as others. @firemant can you put a link to either prove your statement or disprove HF's?

HaHa. I was waiting for that, and I will. But I am not at home at the moment.

But, for now, a Regulation is exactly that.. And is part of Law. That is not to be confused with Standards, which are not. A manufacturer, or,indeed an engineer, can use a method not in the Standards - but may be called upon to explain why their methodology is as or more apt.

 

[Harvest Fields]

Say what?

 

[firemant]

Say what?

What don’t you understand ?

 

[Harvest Fields]

What don’t you understand ?

What has that got to do the MIs?

 

[Aire]

Realistically, does this scenario happen often? How many times has someone came across a situation where by the regs it was wrong, but right by the manufacturers instructions?
Surely manufacturers are required to produce their appliances so they fully comply with our regs and not just used as a guide?

I would say though that regarding the flue in this thread. The "standard" would be to clip at every change of direction and just before if leaves the roof. But if the manufacturers produced their flue so that when pieced together it was rigid, and they stated only 1 clip at the exit was needed, then this would be acceptable.

 

[firemant]

What has that got to do the MIs?

???
MIs cannot over rule Regulations. They can offer an alternative to Standards, but must be demonstrably be at least as effective.

 

[Harvest Fields]

So basically what you are saying is that regs say 1.8m but if MIs state every meter or change of directions this can be ignored and 1.8m can be used?

 

[JohnnyM]

Regs say 1.8m and at every turn of direction but I think we’re going a bit over the top about it. 1m would be fine because 1.8m is a maximum.

 

[Harvest Fields]

Regs say 1.8m and at every turn of direction but I think we’re going a bit over the top about it. 1m would be fine because 1.8m is a maximum.

So if MIs said every 1.2m you would ignore and use regs?

 

[firemant]

So basically what you are saying is that regs say 1.8m but if MIs state every meter or change of directions this can be ignored and 1.8m can be used?

No. You have to follow MIs, but they cannot over rule Regs. They can obviously demand higher specs, and of course you can work to higher standards.

But my point is that MIs are not superior to Regs, which is what folk keep saying.

 

[Harvest Fields]

We will just have to disagree on this one mate.

 

[ShaunCorbs]

No. You have to follow MIs, but they cannot over rule Regs. They can obviously demand higher specs, and of course you can work to higher standards.

But my point is that MIs are not superior to Regs, which is what folk keep saying.

so lets say

clipping distance

regs every 2m
mi every 1m

you would go off the regs then

 

[ShaunCorbs]

Realistically, does this scenario happen often? How many times has someone came across a situation where by the regs it was wrong, but right by the manufacturers instructions?
Surely manufacturers are required to produce their appliances so they fully comply with our regs and not just used as a guide?

I would say though that regarding the flue in this thread. The "standard" would be to clip at every change of direction and just before if leaves the roof. But if the manufacturers produced their flue so that when pieced together it was rigid, and they stated only 1 clip at the exit was needed, then this would be acceptable.

quite a bit regs want flues screwed every joint for viessmann this is a big nono as it states in the mi do not screw the flue as with expansion the flues split