I rolled the ceiling and after it dried, there are roller lap marks in several places... what can I do to fix this?
If your first attempt at rolling leaves roller lap marks after drying, you need to SAND down the roller lap marks with COARSE sand paper wrapped around a block of wood (block sanding) and then re-roll the entire ceiling again, but do it as instructed here on our page about ROLLING ... it takes a lot of PRACTICE to get the technique down pat!