We live in a south London c.1900 London terrace. We have a cellar which is dry, but the walls are dusty, ventilation is good, now! The walls have previously been painted - I’ve removed everything that is loose. I don’t want to apply a non breathable paint to the surface, having read your article a Beeck mineral paint seemed like a good idea. Can you advise what paint would be best. The walls are made of bricks and there are areas of repointing with modern masonry cementone mortar. I would like to simply paint the walls white to brighten the cellar, have a solid finish and also prevent dusting as much as possible.