Window colours for warming climates?

[Ferdinand]

This is a spin off from the other thread, thinking about window frames heating up and expanding.

 

Does anyone have any observations about colours of modern windows in warmer countries - say Italy / France / Spain?

 

That is perhaps where our climate is heading.

 

To be fair, for some places that will mean "less cold".

 

Ferdinand

 

[MikeGrahamT21]

My personal view is that the overall climate is less of a problem for window frame colour. Its more the direct heat of the sun which causes any warping/distortion etc. If the general climate is warmer, then this in theory should be less of an issue, but the sun will still heat the frames to a good 70-80C.

[Ferdinand]

Agreed - the temperature the frame reaches.

 

Inside my front rooms it happily runs up to nearly 40C currently sometimes, but the Oak colour UPVC frames take whatever their temperature reaches,

[SteamyTea]

5 hours ago, MikeGrahamT21 said:

My personal view is that the overall climate is less of a problem for window frame colour. Its more the direct heat of the sun which causes any warping/distortion etc. If the general climate is warmer, then this in theory should be less of an issue, but the sun will still heat the frames to a good 70-80C.

Yes.

And the sun is not getting any hotter.

You can work out the max temp from the power of the sun (no more than 1200W.m^-2) and the SHC of the material the frame is made from (PVC 840 - 1170 J.kg^-1.K^-1, Timber between 1300 and 2500).

Expansion of PVC is 50^-6 m.m^-1.K^-1, timber 3-30 ^-6 m.m^-1.K^-1

Edited December 15, 2020 by SteamyTea