Most of us spend hours poring over colour charts and barely a minute thinking about sheen. That is a shame, because the finish — how much light the dried film reflects and how hard it is — decides whether your walls still look presentable in two years' time. Get the finish right and the room becomes easier to live in, easier to clean, and easier to touch up. Get it wrong and you will be repainting a hallway you only decorated last spring.

Understanding Sheen Levels

Paint finishes sit on a sliding scale from flat to glossy. The shinier the paint, the harder and more wipeable the film — and the more it highlights every lump, ripple and filled crack underneath. Knowing roughly where each product sits helps you choose quickly.

• Matt (roughly 2–5% sheen): flat, chalky-looking, superb at hiding imperfect plaster, but the softest and least washable.
• Eggshell (around 20–30%): a gentle, low-key glow with a noticeably tougher, more water-resistant film.
• Satin (30–40%): a clear sheen and a hard-wearing surface that shrugs off knocks and repeated wiping.
• Gloss (80% and above): the toughest and most reflective, traditionally used on woodwork, though it shows every flaw in the surface beneath.

Matt Where It Earns Its Keep

Matt emulsion is the default for good reason. It goes on quickly, touches up invisibly, and because it reflects so little light it forgives the wonky ceilings and patched plaster that older UK homes are so generous with. Ceilings are its natural home — use a contract matt or a vinyl matt, roll in overlapping bands, and keep a wet edge so you do not end up with lap marks. Two thin coats always beat one thick one.

The catch is that matt films are comparatively soft and porous. Cooking grease and felt-tip sink in rather than sitting on the surface, and scrubbing will burnish the paint, leaving a shiny patch that catches the light. Keep standard matt to ceilings, bedrooms, dining rooms, spare rooms and other low-traffic areas. If you want that flat look somewhere busier, look for a scrubbable or washable matt — the formulation is tougher without adding much shine.

Eggshell and Satin: The Hard-Working Middle Ground

Eggshell sits in the sweet spot for most of the house. It has a soft, understated sheen but a much harder, more water-resistant film than matt, so it copes with a damp cloth and a drop of mild detergent. It is the sensible choice for hallways, stairwells, landings, kitchens and bathrooms.

Satin pushes that durability further. It is noticeably shinier — sometimes close to a low gloss — and tougher still, which makes it excellent on kitchen walls, splashbacks, bathroom walls and woodwork. Skirting boards, architraves, doors and window reveals all take a beating, and satin handles them well.

For trim, water-based satinwood has become the modern favourite. It dries in a couple of hours, brushes out with water, and stays white instead of yellowing the way old solvent-based gloss tends to. Traditional gloss still has its fans for front doors and period joinery, where that deep, glassy shine is part of the look — just accept the longer drying time and the stronger fumes.

A Room-by-Room Rundown

• Ceilings: matt, in white or a near-white. Vinyl matt is fine in most rooms; in a steamy bathroom, choose a moisture-resistant product to discourage mould.
• Bedrooms and living rooms: matt or durable matt on walls. Use eggshell or satin on the woodwork so it survives the vacuum cleaner.
• Hallways and stairs: eggshell or satin on walls. This is the busiest, most scuffed space in the house, and wipeability matters more than a flat finish.
• Kitchens: eggshell or satin on walls, and satin on cupboards and trim. Grease wipes off a satin film; on matt it soaks in.
• Bathrooms: moisture-resistant eggshell or satin on walls and ceilings, or a bathroom-specific emulsion with added fungicide. Avoid standard matt near the shower.
• Woodwork throughout: satinwood for a soft modern look, gloss for a traditional one. Always use a suitable primer or undercoat first, especially over old oil-based paint.

Preparation Makes or Breaks the Finish

Sheen magnifies whatever is underneath it, so the shinier the paint, the more effort the prep deserves. Fill dents and screw holes with a fine-surface filler, sand flush with 120-grit paper, then finish with 180-grit. Wipe the dust off with a damp cloth and let it dry before you open a tin.

• Prime bare surfaces: new plaster, bare wood and filler all need a mist coat or primer, or the topcoat will soak in unevenly.
• Match your tools: a short-pile roller for smooth walls, a medium-pile sleeve for lightly textured ones, and a decent synthetic brush for cutting in.
• Test before you commit: brush a sample onto a piece of A3 card rather than the wall, and look at it in daylight and again under the evening lamps. Sheen changes how a colour reads.
• Respect drying times: rushing a second coat while the first is tacky is the fastest route to a patchy finish. Ventilate the room, keep the heating steady, and give water-based paints the time stated on the tin.

One last thought: buy a little more than you think you need, and note the batch code on the tin. It makes touch-ups years later far less of a gamble, and a spare litre in the garage is cheaper than repainting a whole wall because of one scuff.