Cooling tips

[Brigadier]

I think roller shutters may be substantially cheaper than blinds. The price of £2k I saw was for blinds. External blinds look a lot nicer than a security shutter. I have no idea why they are so expensive, though. I didn't spend a lot of time looking, so maybe they can be found cheaper.

Shutters rattle like buggery in high winds though.
There may be quieter ones, but no way would I countenance them for my gaff.

 

[motorbiking]

"with windows"
Nothing to do with penetration through the insulation/masonry.
At least understand the basics.

Irrelevant waffle.

 

[motorbiking]

Your theoretic blather impresses only the dull minded. Nothing you have posted above can't be mitigated with even modest ventilation. Human presence changes very little in terms of overall heat gain on a hot sunny day.

There isn't a designer on the planet that would design a house without insulation in an effort to mitigate heat build up through glazing (windows etc). Preach to your moron buddies, they are lapping it up.

More irrelevant waffle.

 

[motorbiking]

So you keep blathering.
It's not eventual on a day to day basis no.
PIR's thermal accountability is immediate. It doesn't degrade during the day.

But it is based on inside temperature vs outside temperature. Surely you know this, it’s basic stuff.

 

[noseall]

But it is based on inside temperature vs outside temperature. Surely you know this, it’s basic stuff.

What is based on inside v's outside temperature?

 

[motorbiking]

What is based on inside v's outside temperature?

Heat loss/gain.

 

[noseall]

Irrelevant waffle.

Not when discussing the thermal conductivity of cavity wall insulation, no.

Irrelevant waffle would be saying that windows increase the heat of a room and trying to blame the buildings insulation for it.

What do those that look at it scentifically say....

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

Keep dithering boyo.

 

[motorbiking]

A little education for you Nosenout. You really should be embarrassed that you don’t know this.

Thermal transmittance, also known as U-value, is the rate of transfer of heat through a structure (which can be a single material or a composite), divided by the difference in temperature across that structure. The units of measurement are W/m²K. The better-insulated a structure is, the lower the U-value will be.

 

[noseall]

Heat loss/gain.

I'm not following you. Are you suggesting PIR insulation thermal resistance will somehow slow or stop or become impotent as the day goes on?

 

[noseall]

A little education for you Nosenout. You really should be embarrassed that you don’t know this.

Thermal transmittance, also known as U-value, is the rate of transfer of heat through a structure (which can be a single material or a composite), divided by the difference in temperature across that structure. The units of measurement are W/m²K. The better-insulated a structure is, the lower the U-value will be.

Nicely C&P'd. I'm well aware of the merits of PIR though, thanks all the same.

 

[noseall]

Heat loss/gain.

A little education for you Nosenout. You really should be embarrassed that you don’t know this.

Thermal transmittance, also known as U-value, is the rate of transfer of heat through a structure (which can be a single material or a composite), divided by the difference in temperature across that structure. The units of measurement are W/m²K. The better-insulated a structure is, the lower the U-value will be.

And nothing to do with the performance of PIR.

Are you suggesting its thermal resistance becomes weaker as the day goes on?

 

[Harry Bloomfield]

And nothing to do with the performance of PIR.

Are you suggesting its thermal resistance becomes weaker as the day goes on?

No one is suggesting that, what is attempted to be explained to you, and by several posters - is that despite good insulation, heat (or cold), can and will make its way through the insulation eventually. The only way to maintain an insulated space, at a desired temperature, is via active measures.

 

[noseall]

despite good insulation, heat (or cold), can and will make its way through the insulation eventually

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

 

[Harry Bloomfield]

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

You are totally lacking in basic knowledge of physics, and despite your assertions to the contrary, you are totally, and completely WRONG. You are trying to convince several of us that 2 + 2 + 5. I suggest you go back to school, and don't bother to pass go!

 

[Brigadier]

No one is suggesting that, what is attempted to be explained to you, and by several posters - is that despite good insulation, heat (or cold), can and will make its way through the insulation eventually. The only way to maintain an insulated space, at a desired temperature, is via active measures.

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.