Buy a 2-1/2-inch angled sash brush for the cut line, the baseboard, and the window casing. Wait on a wide wall brush. The open wall is a roller: cover and tape.
Which tool hits the edge
| Edge | Use | Skip | Shop |
|---|---|---|---|
| Wall meeting trim | 2-1/2-inch angled sash | Rolling into the baseboard | View Wall meeting trim (affiliate) |
| Glass and stained wood | Tape, then the same brush | A freehand line on a window | View Glass and stained wood (affiliate) |
| The middle of the wall | 9-inch roller | Brushing a whole room | View The middle of the wall (affiliate) |
Affiliate Link • Earns Commission
Why the angle matters
A square brush bridges the trim and leaves a thick edge. An angle lets the long corner ride the cut line while the short side stays off the wood. Load the lower half of the bristles, knock off the drip, and draw the line in one pass. A second pass on wet paint drags a ridge.
Two and a half inches is the width for baseboards and door casing. Tight window muntins want a smaller brush. A 3-inch brush feels faster until it paints the trim you just taped.
The brush
The rest of the paint cart is in paint supplies, including the roller frame. High walls and ceilings: extension pole.