hi guys big job on tomorrow i said i would be there at 8 its not double glazed should i do it   i no hot water will crack glass but how cold does it need to be its a big job and dont want any problems cheers

if you have hot water i think i read before that the water should be no warmer than 20 above the outside temp

its only - 2 out there at 9 pm and cloudy so hope it stays like that

Wise words written from experience.
Conservatories often have frozen glass often near the ground as people cut back on their heating.

oh dear, I found out that I could leave the doors open one click on mine, but the locks  had a habit of freezing closed later in the day so I had to bungee them together to be able to drive without the doors flying open when cornering, gosh I hope its not ging to be as bad as last year.