Mrs Mottie wants them painted white. I’m going to undercoat them first and then give a coat of Dulux 'white cotton' Satinwood. Is it best to mask up the glass first. Started masking up but getting bored and I’ve still got another 30 panes to mask. Or shall I just paint them and then get any paint off the glass with a razor blade scraper? I’m going to take them off and remove all the locks, hinges and handles before painting. I’m not steady or patient enough to cut them all in.