We are considering having double glazing (apart from anything else, the window frames are in a terrible state!)
We went to a local showroom, and found that the handles of the doors and windows are extremely stiff, such that I can't open them. I told the man there what the problem was, but he wasn't very helpful - probably didn't understand what I meant - and said that WD40 might work. My husband thought that was extremely unlikely.
I've looked online for gadgets that might help with this, but nothing seems to be the right thing, yet I can't possibly be the only person with this problem.
Could anyone suggest anything?