hi mr squeegee
thanks very much for your answers, 20f is -6.6c.
What is iso that you add to pure water?
How does a ladder stand off help with safety?
The pivot tool looks good, although very big
using a shovel is a good idea to make sure the surface is clear of ice and snow!
And to conclude a hate ladders too!

Many thanks for the replys
All the best and merry xmas, george