theres a simple technical answer - don't sing along with the 'Go Compare' add
(or perhaps eat less curry
)
joking aside, we take glass for granted and pay little heed to and there is a lot of it in every home. i think what happens in extreme cold is the vacuum has dissipated the air that has leaked in contract's due to the severe cold, when warmth is applied quickly the air in the module expands to take up more room that it did when at 'normal' temperatures and expands. add to the effect you get when pouring hot water on your wind screenon a frozen day and 'pop'.
if the above worries you (as a devoted grandad it has me), you can get a clear self adhesive safety film which is attached to the glass, so if it s damaged the film retains it, often used in glazed internal doors, back doors or display cabinets etc. to guard against kids on bikes/skates from being 'sliced and diced' if they crash into it.
Kurk, i'd suggest you get some for the new and remainin window to protect the magic triplets of your sisters, and lets face it K, last thing in the world you would want is to be naked in the bathroom when the glass smashes - think of the neighbours man if nothing else
.
regs
alan
info@C5Alive.co.uk