Do you paint trim or walls first?
Ceiling first, then walls, then trim. Gravity and overspray both work downward, so anything that drips or spatters lands on a surface you have not finished yet. Among professionals the common variation is trim first, then walls, cutting the wall colour up to the finished trim.
The two defensible orders
The case for trim first is that trim enamel is easier to apply quickly and sloppily, because any overrun onto the wall gets covered by the wall coat afterwards. You are then cutting one clean line — the wall against finished trim — instead of two.
The case for trim last is that it is easier to cut a straight line with a brush against a wall than to protect finished trim from a roller. Both work. What does not work is doing walls and trim in a random order and having to touch up both.
Whichever order you choose, doors and windows are their own job and usually come last, because they need the hardest-wearing product and the most careful finish.
If you are using tape, pull it while the final coat is still slightly soft, pulling back on itself at a shallow angle. Tape left until the paint is fully hard tears the film along the edge, which is the most common reason a taped line looks worse than a hand-cut one.
How we sourced this
This answer is composed from our knowledge base, which holds only what a regulator, a standards body or a manufacturer supports. The sources behind it are listed below with the date we accessed each one. If a claim on this page has no source under it, that is a bug — tell us and we will fix it.
Where a figure is product-specific — coverage, dry time, recoat time, temperature limits — we point you at the manufacturer's technical data sheet rather than printing a general number as though it were a specification. That distinction is the most common error in this trade, and it is the one that costs people a repaint.
Common mistakes
- Doing walls and trim in no particular order, then having to touch up both.
- Leaving tape on until the paint is fully hard, which tears the film along the edge when you pull it.
- Cutting the wall colour against trim that has not cured, so the brush drags the enamel.
Related questions
Sources
- Sherwin-Williams. Product technical data sheets (accessed 2026-08-17).
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