My kitchen walls have got the dreaded woodchip plastered all over them, I want to give them a lick of paint but they're quite dirty from the gas hob. They're painted with a matt emulsion at the moment, what do you think would be the best way to clean them before I paint,? I've got sugar soap but it'll get very wet so I'm not sure that's the best course of action.
I would use sugar soap. I've often used it on my wallpapered walls. Just wipe down with a solution of water and sugar soap and then wipe down again with clean water. You don't have to saturate the cloth.
For many years now, woodchip wallpaper has been given a water-resistant finish. Using a squeezed-out cloth with sugar soap to get rid of greasy dirt should work fine, and won't damage the wallpaper itself.
Fender, in an ideal world I'd do that but I can be almost certain that the walls underneath are crap, so that would mean repapering or plastering neither of which I'm prepared to do.