conservatory too hot?

[fred]

What temperature would a conservatory need to reach for the structure to inrcur heat damage. (Talking plastic not wood or aluminium) What would be the nature of such damage if it occured ?

[The Natural Philosopher]

depend on plastic, but up around 50C for some plastics to start to deform back to pre injected or pre extruded stresses*.

Not sure but ISTR Land River had some plastic fascias that simply became unusable after been left in sunny car parks. ] And a glass house in the sun CAN get well over 50C.

• I get tubs of things in vac formed plastic from the supermarket. I keep em for freezing stuff in. They will deform with near boiling water.

But EP foam doesn't of course.

[polygonum]

Shame it doesn't explicitly refer to "uPVC, conservatory windows for the framing of", but this looks interesting:

[Brian Gaff]

Byuckling and depending on the materiel catastrophic failure.

However unless you are going to turn it into a kiln, I'd suspect this would not be an issue. Brian