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Hilarious..No it does not. High performance adequate thickness PIR does not let heat through eventually.


Hilarious..No it does not. High performance adequate thickness PIR does not let heat through eventually.

Good grief. I guess at least this isn’t your area of expertise. Unlike Nosenout who should really know this stuff.You and others are just redefining your argument such that, while it might be "correct" in a lab. , it holds no relevance in the real world.
Good grief. I guess at least this isn’t your area of expertise. Unlike Nosenout who should really know this stuff.
Hilarious..oh wait you’re serious.
Correct.You and others are just redefining your argument such that, while it might be "correct" in a lab. , it holds no relevance in the real world.

What do you think a U-value is ? Is if the rate at which heat energy is transferred through a material? Please do advise where I can buy a PIR with a U-value of zero.No it does not. High performance adequate thickness PIR does not let heat through eventually.
It's not eventual dummy.What do you think a U-value is ? Is if the rate at which heat energy is transferred through a material? Please do advise where I can buy a PIR with a U-value of zero.

Correct.
MBK tried to be clever and pulled a link without reading it. Then when it was shot down, pulled another - guess what.
Yup...
4.2 ENERGY EFFICIENCY AND OVERHEATING Lomas 490 Buildings and Cities It is frequently suggested that increasing the insulation levels of homes exacerbates overheating. However, some reporters mistake correlation for causation. Field studies have shown that there was no significant difference in the incidence of overheating with the presence, or otherwise, of cavity wall or loft or other insulation measures. Whilst dwellings with a good energy efficiency rating overheated significantly more than less efficient homes, this could be because they were also significantly more likely to be flats (Lomas et al. 2021). Modelling has shown that loft and external wall insulation can actually reduce both overheating and heating energy demand (Porritt et al. 2012). Both field studies (Tink et al. 2018) and modelling (Porritt et al. 2012) indicate that internal wall insulation may increase overheating risk, but simple passive measures can easily control this. In summary, it seems that energy efficiency measures to reduce energy demands and mitigate climate change are not in conflict with climate change adaptation
He's not the brightest.

You clearly have some learning to doIt's not eventual dummy.
Go read your own links dummy.You clearly haven’t some learning to do
Did anyone suggest otherwise? Presumably you mean when the sun is up and in a certain position relative to the windows in the house whilst having little affect on the robustly insulated masonry?The only way to maintain an insulated space, at a desired temperature, is via active measures.

I honestly can’t believe someone can be a successful builder without a basic understanding of what U-values are and why heat loss/gain is based on the temperature difference.He really is, and really believes it!
and it seems, he is not entirely alone in his misbeliefs.
I'm not even sure they are serious.You've never heard of night time, then?
Or of opening a window?
The sun tracking across the sky?

No the rate of gain/loss is based on the temperature difference. The speed of gain/loss is based on the thermal conductivity.Did anyone suggest otherwise? Presumably you mean when the sun is up and in a certain position relative to the windows in the house whilst having little affect on the robustly insulated masonry?
I honestly cant believe you don't read your own links...I honestly can’t believe