People agonise over colour and pick the sheen in ten seconds. It is the wrong way round. The colour decides how a room feels; the sheen decides how it survives being lived in.
Sheen is simply how much light the dried paint reflects. More sheen means a harder, more washable surface — and a surface that shows every imperfection underneath it.
Flat and matte
No reflection. Hides everything: roller marks, patches, a ceiling that is not quite flat, a wall that has been repaired more than once.
The trade-off is that traditional flat paint marks easily and does not clean well — wiping it can burnish a shiny patch into the surface. Modern “washable matte” products have improved this a great deal and are worth the difference.
Where it belongs: ceilings, always. Adult bedrooms, formal rooms, and any wall whose surface you would rather not draw attention to.
Eggshell
A very low sheen. The usual compromise for living space: enough hardness to be wiped, little enough reflection to be forgiving.
Where it belongs: living rooms, dining rooms, bedrooms, hallways in a quiet house.
Satin
Noticeably reflective, and properly washable. This is where a wall starts being able to take scrubbing.
The catch: satin shows surface flaws honestly. On an uneven old wall it will highlight every repair, so the preparation has to be better before you use it.
Where it belongs: kitchens, bathrooms, laundry rooms, children’s rooms, and busy hallways and stairwells.
Semi-gloss
Hard, smooth, very washable, and clearly shiny.
Where it belongs: trim, baseboards, door frames, doors, window casings, and railings — the surfaces that get touched, kicked, and knocked by a vacuum cleaner. A hard enamel on trim is what stops a room looking scruffy a year later.
Gloss
The hardest and the most reflective, and the least forgiving of anything underneath it. A glossy door will show every ripple in the surface it went on.
Where it belongs: front doors, feature doors, cabinetry and furniture — where the surface has been prepared properly enough to earn it.
The rules that hold in most homes
- Ceilings: flat. A ceiling is lit at a glancing angle and any sheen turns it into a map of its own imperfections.
- Walls in living space: matte or eggshell.
- Walls that get wet or touched: satin.
- Trim and doors: semi-gloss, in a hard enamel.
- The rougher the surface, the lower the sheen it wants.
Two things people get wrong
Using the same sheen everywhere. Flat on the trim looks soft and marks within weeks. Satin on the ceiling shows every seam.
Assuming a colour looks the same in two sheens. It does not. The same mix reads darker and deeper in a flat finish than in a satin one, because the satin is bouncing light back at you. If you are matching a colour across surfaces, match it in the sheen it will actually be in.