Cut In Below the Line First — and Load the Brush So It Actually Holds Paint

The Problem

Cutting in at the ceiling line freehand goes wrong two ways: a starved brush that drags and skips, or an overloaded one that floods the join and pushes paint onto the ceiling. Either way the line ends up patchy or fuzzy, and every glance up sees it.

The Technique

A decorator's do's and don'ts for sharp lines:

1. Use a soft-bristled angled brush — a 2-inch angled sash brush with soft bristles gives control and a sharp edge.
2. Load it properly. Don't dip-and-wipe until the brush is nearly dry. Dab the brush into the paint so the bristles open up and take on a real load, slap off the excess against the sides of the bucket, then lightly dab again. The brush should carry paint, not just wear it.
3. Hold the brush horizontally, face applying paint just underneath the line — not choked up vertically, which costs control and spread.
4. First pass: a couple of millimeters below the ceiling line. Push the brush into the wall so the bristles fan out, and run the pass. This unloads the excess safely away from the join.
5. Second pass: drag along the line. Push in again to open the bristles and drag the brush along the ceiling line — now with a working amount of paint, the fanned edge draws the sharp line.
6. Corners: dab the brush into the join with the tip pushed into the corner, then twist it horizontal — top bristles still pressed into the corner — and drag away along the ceiling line. Repeat mirrored for the other direction.