PIR board over joists
Discussion
guindilias said:
People just don't die from it in domestic house fires. Ever. It isn't an issue.
Perhaps you’d like like to quote that to the Grenfell enquiry where 78 people died in a domestic situation.Suggest you read the article that gottans posted above. It looks as if the PIR foam the OP has used is the very foam mentioned in the article. Which is combustible and Kingspan have lied about it!! That guy in the article should be sacked and jailed.
.A domestic high-rise building clad in the stuff. Not a domestic house with some in the loft. If you can't see the completely different situation, application and consequences, you are an idiot. I have shotgun cartridges in the house but if there is a fire, they will not explode and shoot me.
What *exactly* is the risk? You can't compare to a particularly poor example of external cladding.
Short of overinsulating a load of wires and lighting the place on fire that way (which is an actual risk), or the plasterboard being full of holes so a fire spreads through the plasterboard into the roof space what exactly is the problem? Houses are *full* of this stuff sitting behind plaster.
Do you st yourself over those crappy engineered joists and the way they act in fire? That's a pretty nasty theoretical problem too...
Short of overinsulating a load of wires and lighting the place on fire that way (which is an actual risk), or the plasterboard being full of holes so a fire spreads through the plasterboard into the roof space what exactly is the problem? Houses are *full* of this stuff sitting behind plaster.
Do you s
t yourself over those crappy engineered joists and the way they act in fire? That's a pretty nasty theoretical problem too...I have to admit, while the risk of fire is going to be less than something the scale of Grenfell, chucking a load of foam board over random presumably ageing cables sounds fairly naff.
However I would be more concerned about trapping damp, ceilings are fairly permeable and humans breath out a lot of moisture.
Also, generally, I have absolutely no idea why you would try and use foam board in this way given glass or rock wool would be cheaper easier and better in every way.
I used foam boards for the sloping section of my ceiling, but fitted them from below and then replaced the ceiling.
Daniel
However I would be more concerned about trapping damp, ceilings are fairly permeable and humans breath out a lot of moisture.
Also, generally, I have absolutely no idea why you would try and use foam board in this way given glass or rock wool would be cheaper easier and better in every way.
I used foam boards for the sloping section of my ceiling, but fitted them from below and then replaced the ceiling.
Daniel
guindilias said:
I don't think Kingspan are squeaky clean, and I agree that Heath should be jailed - but it's about balancing risk with reality in the OP's situation. Nobody is going to be injured or killed by the PIR if there is a fire in his house. Have you never done a risk assessment?
What QUALIFIES you to be so certain then?Over 20 years as a fire surveyor for the UKs largest insurer and hold a NEBOSH Cert too. I have personally prevented fires and have saved my company many many millions over that period. So my professional opinion trumps your somewhat lacking common sense.
I’m done here. Arguing with a moron just brings you down to their level and then you get beaten by their experience. And you are indeed a moron.
I’m done here. Arguing with a moron just brings you down to their level and then you get beaten by their experience. And you are indeed a moron.
Edited by elanfan on Monday 30th November 22:51
elanfan said:
I’m done here. Arguing with a moron just brings you down to their level and then you get beaten by their experience. And you are indeed a moron.
Coward's way to say "I'm a quitter". A £500 NEBOSH certificate doesn't count for anything - I have one myself!
And 20 years working for an insurer. So during that 20 years if your risk assessment is based on what you have seen, you will have seen plenty of fires in domestic houses, yes? And based on your previous posts, some of them will have resulted in death due to PIR insulation being fitted to a loft, yes?
So why not just show some examples, because it must happen - that is what you are basing your assessment of the risk on?
Because if not, it is just useless posts to drop into a thread. Grenfell is not an example of what can happen.It was a million miles away from the OP's situation, and using it as an example of how dangerous PIR is when put in a loft is not just stupid from a layman's point of view, it makes you look even more stupid now that you have told us you have experience in the field.
I'll say it again - PIR insulation in a loft is not a danger to life. You have the background to be able to prove me wrong if I am wrong, so do it. If I am wrong, you might just save a life...
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