Cooling tips

[noseall]

The masonry retains the heat from the time the sun was on it then when it is persistently hot and sunny the heat builds up in the masonry every time the sun is on it.

Why do you think robustly insulated walls are cool to the touch when they are hot (sun beating down on them) outside?

 

[noseall]

Eventually,

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.

 

[aveatry]

Why do you think robustly insulated walls are cool to the touch when they are hot (sun beating down on them) outside?

Because you probably like arguing.

 

[Harry Bloomfield]

Because you probably like arguing.

That was a far too polite response!

 

[StephenStephen]

Another stupid, nonsensical response, which ignores basic physics. Insulation will keep out heat, or cold for a while, but it can only delay either. In the long run, the insulated space, will need either heat, or cold input, to maintain a stable temperature.

...which, if the insulation is sufficient, it will usually have enough input of, with good design, and inevitable processes - like this one: https://en.m.wikipedia.org/wiki/Night

 

[noseall]

Eventually, it will, no insulation is perfect, even in space. Does the coffee, in your thermos, stay hot forever? Heat and cold, will eventually pass through even the very best insulation. Insulation just slows, and delays the process, it doesn't stop it.

Poor analogy.

 

[noseall]

No I've shown that you don't seem to have any knowledge of how a highly insulated building with windows, can heat up and not cool down due to being well insulated.

I think we are all clear that this is nonsense. I was genuinely surprised that you know so little about this subject.

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

 

[pete01]

Bloomin eck it's gone warm again what should I do?

 

[aveatry]

Bloomin eck it's gone warm again what should I do?

Take out all of your insulation

 

[MNW67]

Bloomin eck it's gone warm again what should I do?

To be serious for a moment. If anyone really struggles with the heat, the cheapest solution is probably to get air conditioning. Especially in the main bedroom. All the passive methods seem to cost a lot more. We live in a relatively cool area and it is a big house, so it is only a very occasional issue for us. We certainly wouldn't get a/c downstairs. I have only felt uncomfortably warm downstairs on two days in thirty five years.

 

[MNW67]

My point was that a shutter is a lot of money for only one purpose, whereas an awning would serve an additional purpose, but for much less cost.

Yep but I suppose shutters will add security

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.

 

[noseall]

No I've shown that you don't seem to have any knowledge of how a highly insulated building with windows, can heat up and not cool down due to being well insulated.

You have shown sod all.

From your link boyo...

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

 

[noseall]

Don't underestimate the source of heat inside a building and the one way effect of solar gain.

Humans: Each human 100-200 watts p/h
Infrastructure: A laptop, a monitor etc. 100-150 each, same for a TV. p/h
Solar gain on a window: Sunlight entering a space through a window increases the temperature of that space. This happens because the shortwave solar radiation passes through the glass and is then absorbed by objects inside, which then re-emit it as longer-wavelength infrared radiation that is trapped by the glass, leading to a rise in temperature.

Then you have the outside temperature which impacts a building's ability to lose heat.

When you calculate the heating requirement for a space based on the U-value you typically assume an outside temperature of zero and a target inside temp of 20-21.

I would expect the avg. builder to know about this. But it seems to be the domain of HVAC engineers. I guess the builder just does what they are told.

With a U value of .19 and a large south facing modern window, you could easily find a room gains heat that it cannot lose.

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.

 

[noseall]

Bloomin eck it's gone warm again what should I do?

Suck on an ice lolly.

 

[pete01]

Suck on an ice lolly.

I've got a tip top will that work