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What Is the Difference Between Flat, Low-Sheen, Satin and Semi-Gloss Paint?

Choosing the right paint sheen level makes a big difference to how a room looks and how easy it is to clean. Here's what each finish means in plain NZ English.

What Is the Difference Between Flat, Low-Sheen, Satin and Semi-Gloss Paint?
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Picking a paint colour is the fun part — but choosing the right sheen level (also called finish or lustre) is just as important. The sheen affects how light bounces off your walls, how durable the surface is, and how easy it is to wipe down after sticky fingers or cooking splashes. Here's a straightforward guide to the four main sheen levels you'll find at your local paint store.

What Does Sheen Level Actually Mean?

Sheen refers to how much light a dried paint film reflects. It's measured by shining a light at the surface at a set angle and recording how much bounces back — the higher the reading, the glossier the finish. In practical terms, a glossier paint is generally harder, more washable, and more forgiving of knocks, but it also highlights every imperfection in your walls. A flatter finish hides bumps and texture beautifully but is harder to clean.

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The Four Main Finishes at a Glance

FinishSheen LevelBest ForWashability
Flat / MattVery lowCeilings, low-traffic wallsLow
Low-SheenLow–mediumLiving areas, bedroomsModerate
SatinMediumHallways, kids' rooms, trimGood
Semi-GlossMedium–highKitchens, bathrooms, doorsVery good

Flat / Matt Paint

Flat (sometimes labelled matt) paint has virtually no reflectivity. It gives walls a soft, velvety look that's great at hiding surface imperfections like small dents, plaster patches, or uneven texture — making it a popular choice for ceilings and older homes with character walls.

The trade-off is durability. Flat paint is more porous, so marks and scuffs can be tricky to wipe off without leaving a shiny patch. Stick to flat finishes in low-traffic areas or on ceilings where cleaning isn't a regular concern.

Low-Sheen Paint

Low-sheen is the workhorse of NZ interior painting. It sits just above flat, offering a subtle hint of lustre that makes colours look rich and full without drawing attention to wall imperfections. It's significantly more washable than flat, which is why it's the go-to finish for living rooms, bedrooms, and general interior walls in most Kiwi homes.

Brands like Resene and Dulux both offer popular low-sheen interior ranges that are specifically formulated for NZ conditions, including humidity levels that vary significantly between Auckland and Southland.

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Satin Paint

Satin has a smooth, pearl-like finish — noticeably shinier than low-sheen but not as reflective as gloss products. It strikes a good balance between aesthetics and practicality, making it ideal for:

  • Hallways and stairwells — high-traffic areas that need regular wiping
  • Children's bedrooms and playrooms — easy to clean crayon and food marks
  • Timber trims, skirtings, and architraves — gives woodwork a neat, defined look
  • Feature walls — adds depth and interest compared to a flat finish

Because satin is more reflective, it will show up surface flaws more readily than low-sheen. Good surface preparation — filling holes, sanding, and priming — is essential before applying a satin finish.

Semi-Gloss Paint

Semi-gloss is the toughest and most washable of the four finishes covered here. It's highly moisture-resistant, which makes it the standard choice for:

  • Kitchens and bathrooms — handles steam, splashes, and frequent cleaning
  • Doors and window frames — withstands constant handling
  • Laundries and utility rooms

Under the NZ Building Code, wet areas like bathrooms must be properly waterproofed behind tiles, but the paint finish on walls above the tiled zone still benefits from a semi-gloss or satin product that can handle condensation and humidity. BRANZ research consistently highlights moisture management as a key factor in maintaining healthy, durable homes.

The downside of semi-gloss is that it shows every bump, brush mark, and imperfection clearly. Surface prep is critical — any shortcuts will be obvious once the paint dries.

Choosing the Right Finish for Each Room

Ceilings

Almost always flat/matt. Ceilings rarely need washing, and a flat finish minimises the appearance of any unevenness in the plasterboard. GIB plasterboard ceilings in particular benefit from a flat ceiling paint that doesn't highlight joins.

Living Rooms and Bedrooms

Low-sheen is the standard choice. It looks great, hides minor wall imperfections, and is easy enough to spot-clean.

Kitchens and Bathrooms

Semi-gloss or at minimum satin. Moisture resistance and washability are the priorities here.

Hallways, Kids' Rooms, and Trim

Satin gives you durability without going full gloss.

Tips for a Professional Finish

  • Always prime bare or patched surfaces — paint adhesion and colour accuracy depend on it.
  • Sand between coats on trim and doors for a smooth, professional result.
  • Two coats is the minimum for most interior paints; some deep colours may need three.
  • In humid NZ climates, ensure rooms are well-ventilated while painting and drying. Check Energywise for ventilation tips that also help with healthy homes compliance.
  • Buy a small tester pot first. Sheens look different under artificial light versus natural daylight, and NZ's bright southern light can make glossy finishes look very different from the paint chip in the store.

When to Call a Professional

Painting is one of the more DIY-friendly home improvement tasks, but there are times when hiring a qualified painter pays off. If your walls have significant damage, mould, or moisture issues, a professional can identify the underlying cause before painting over it — otherwise the problem will return. Exterior painting, multi-storey work, or painting near electrical fittings also warrants professional help for safety reasons. WorkSafe NZ has guidance on working safely at height.

You can find qualified, vetted local painters on tradedirectory.co.nz — look for members who hold a Licensed Building Practitioners credential or equivalent trade qualification.

Frequently Asked Questions

Can I use low-sheen paint in a bathroom?+

It's not ideal. Low-sheen paint has limited moisture resistance and can blister or peel in steamy bathrooms over time. For bathrooms, use a satin or semi-gloss paint specifically formulated for wet areas. Some brands offer dedicated bathroom paint with added mould inhibitors, which is worth considering in NZ's humid climates.

Why does semi-gloss paint show imperfections more than flat paint?+

Glossier surfaces reflect more light, which means any bump, dent, or brush mark casts a small shadow that becomes visible. Flat paint scatters light in all directions, effectively hiding surface texture. The higher the sheen, the more critical your surface preparation needs to be.

Is 'eggshell' the same as low-sheen or satin?+

Eggshell is a term used by some brands (particularly American ones) and generally sits between flat and low-sheen in terms of reflectivity. In NZ, most paint brands use the terms flat, low-sheen, satin, and semi-gloss, so eggshell isn't commonly seen on local shelves. If you encounter it, treat it as roughly equivalent to a low-sheen finish.

Do I need a different paint for ceilings, or can I use wall paint?+

Dedicated ceiling paints are formulated to be thicker and less likely to drip, and they dry to a flat finish that minimises the appearance of joins and imperfections. While you can technically use wall paint on a ceiling, a purpose-made ceiling paint gives a better result and is usually more economical for large flat areas.

How many coats of paint do I need when changing sheen levels?+

When changing from a flat to a glossier finish (or vice versa), you'll typically need two full coats of the new paint, plus a primer or sealer coat if the surface is bare or heavily patched. Going from a very glossy surface to a flat finish may require light sanding first to give the new paint something to grip onto.

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