|>>|| No. 3975
What's the best way to defrost a windscreen?
Some say warm water can damage glass, others say modern glass is tougher.
I sometimes use de-icer but it's not very effective. As someone else puts it:
'while the ice initially melts, very soon the volatile liquid evaporates leaving water and, as any schoolchild will tell you, evaporation causes cooling.
So what you get is a short time of melted ice followed by a screen, which is even colder than when you first began, quickly freezing up again!'
Is there a way of predicting if the windscreen will be frozen the next morning? That way I can put the ice blanket up. Is it below 4°c with a clear sky?