The Fastest Way to Cover Walls
Everyone who's painted has a personal technique for rolling walls. Bill honed his technique over three decades. It's methodical, which makes it fast and efficient. It also provides even coverage.
If you're right handed, paint the wall from left to right (it'll feel more natural when you're rolling). Load the roller sleeve with paint and roll from the baseboard to the ceiling to get the paint on the wall. Then roll straight back down (without reloading the roller) to ensure the wall is covered. Load the roller and move over about 3 in. to the right (the unpainted side of the wall) and roll the full height of the wall again to feather out the leading edge.
When you get to the top, move about 6 in. to the left (without reloading) and roll back down to smooth out any runs or lap marks. Then reload the roller, place it on the feathered edge and start the process over. As you paint, roll horizontally where you cut in along the baseboard and ceiling. Only roll about 3 ft. at a time so the paint will stay wet as you roll the walls.
"When I'm painting a room that has an 8-ft. ceiling, I like to attach a short handle to my roller instead of using the more common 48-in. pole extenders. The short handle gives me more control over the roller, and it's easier to turn the roller horizontal to roll along the baseboard and ceiling." - Bill Nunn