It’s a lot easier to clean a shiny surface than a matt one. Try clean a house ceiling versus a house wall - though anyone sane wouldn’t paint a ceiling matt, o

It’s a lot easier to clean a shiny surface than a matt one. Try clean a house ceiling versus a house wall - though anyone sane wouldn’t paint a ceiling matt, or for that matter, even contemplate painting a ceiling. Get a painter to paint it semi-gloss.