I'm currently struggling to get an even finish on our new living room ceiling. I've never had issues before but because the room is so large (approx. 6m x 6m) it is proving difficult to get a finish that does look patchy. I've been using Leyland trade contract matt with a short pile roller. The ceiling was skimmed (in fact the whole house was) prior to painting so is a nice smooth surface. But I'm wondering if the problem is variation in paint thickness and some areas drying too quickly. If so, should I try and use a longer pile roller so I can get a thicker coat of paint in the hope it will dry more even? Also any recommendation for paint to try? After applying about 5 coats of the above cheaper paint and having no success I'm happy to pay through the nose for something that means I only have to do one more coat!