Flue terminal not sealed

[JAH HEATING]

Can't agnst gas safe rules as can crush flue (or so I believe)

Yeah, sealing flues with expanding foam is a no / no isn't it ?

Few years ago they come up with this didn't they ?Nothing ever simple in this job, constant changes.

 

[ShaunCorbs]

Yeah, sealing flues with expanding foam is a no / no isn't it ?

Few years ago they come up with this didn't they ?Nothing ever simple in this job, constant changes.

Yep but think it's the old ncs if everything else is ok

 

[Billy Bob Bob]

Yeah, sealing flues with expanding foam is a no / no isn't it ?

Few years ago they come up with this didn't they ?Nothing ever simple in this job, constant changes.

not quite true,if you use a low expansion type and it does largely depend on what the Manufacturer allows,foam is ok,as in everything mi,s dictate what can be used ,Baxi and ideal allow foam

 

[kb76]

I swear it depends on who picks up the phone, had a load of duo tec's on a new build where builder used foam. I called Baxi who told me its a no no and their engineers won't work on them. Gas Safe said depends on the foam used. Dismantling a conservatory seems extreme, I'd be inclined to seal using long reach nozzle with express cement and correctly seal the inside. Analyse it...happy days!

 

[Last Plumber]

And all this conversation exists because someone picked the cheapest price again and someone didn't do their job properly.
probably
in my opinion

 

[billybob150811]

not sure if the sealing with c&s is a building requirement rather than gas safe or manufacturer which is why replys to this question can be vague

 

[hammers4spanner]

Said it before AR at times is so wishy washy and customers end up so confused why you fail a flue for this reason.
What's the odds of someone having an issue with a fan flued appliance that had internal an external collar but unsealed?
That's not to mention the gases becoming diluted in atmosphere

 

[JAH HEATING]

They should of got rid of at risk if you ask me, it's farcical.

Your appliance isn't safe but you're not letting me isolate it, well at least I've covered my back.

 

[TFGplumbing]

its all rather farcical, only gas engineers care about the classifications, most people dont even know what gas safe is

 

[ambrosia]

Can of expanding foam & a long nozzle...

no no no, one of my pet hates, if the foam has nowhere to go it can crush the flue, plus following engineers have to trust a heat proof one was used

worcester say this

https://www.youtube.com/watch?v=ld1PWjxQ7aM

 

[GrahamM]

Seeing this on a daily basis working in landlord flats I have never AR a flue for not being sealed externally.
If I happy flue is secure and preferably cement sealed at least on inside it is just an observation as far as I am concerned.

And expanding foam is just a no no.

 

[unguided1]

If Yer that worried about it, cement the bugger up!

 

[AWheating]

Unless MI allows the rubber as a seal then its AR. Easier to cement up than do paperwork unless high up

 

[hammers4spanner]

I went on a Taylor Wimpey new build site where the builder had expanding foam all the flue holes about 90 of them on ideal logics. Phoned up ideal and they said no no no they won't honour any warranty with expanding foam .

 

[sammathias]

bet that builder was happy :nono: