As a 'stop gap' (no pun intended) find a local B&Q etc (open on Sunday) and
buy a bit of plywood or OSB.

--
73
Brian, G8OSN
www.g8osn.org.uk


Thanks for your advice.

I don't want to use plywood as it is obvious to anyone who gazes up
from the courtyard that something is wrong with my window.
I'm hoping to get some clear plastic.

Anyway, I think I ought to head for my nearest B & Q open on a sunday.

Thanks