Matt Sealer vs Gloss Varnish: Choosing a Miniature Topcoat
By The Army Painter: all you need for miniature painting | Published: 2026-10-16
Category: Buying Guides
Matt sealer and gloss varnish solve different problems. Use this decision guide to pick the right topcoat for gaming terrain, display pieces, and fluorescent effects like Power Node Glow.
Quick answer
Choose a matt sealer for almost every painted miniature and piece of gaming terrain. It protects the paint without changing how the colours read. Reach for gloss varnish only when you deliberately want a wet, reflective look on lenses, gems, or water. If you want one can that covers the most jobs, GameMaster: Matt Sealer is the safer default.
What a topcoat actually does
A topcoat is the last layer you apply. It sits over your paint and takes the handling, rubbing, and table knocks that would otherwise chip the acrylic underneath. That protection matters most on terrain, bases, and any model you pick up by the body rather than the plinth. The finish you choose also changes how light behaves on the surface: matte scatters light and keeps colours looking flat and natural, while gloss creates a sharp reflective sheen.
Matte vs gloss: the practical difference
The choice is not about which is stronger. It is about which finish suits the piece and how you will use it. Matte finishes hide brush marks and small surface imperfections, which is why they are the standard for army painting and terrain. Gloss finishes are more reflective and can make a surface look wet or glassy, which is useful for specific effects but distracting across a whole model. A gloss coat can also slightly deepen the look of dark colours, while matte keeps them closer to how they looked before sealing.
Where each finish earns its place
Use matte on infantry, vehicles, monsters, buildings, and gaming boards where you want the paint job to read clearly. Use gloss sparingly on eyes, power weapons, gems, or water effects where a wet look is the point. If you already paint fluorescent effects such as Warpaints Fanatic Effects: Power Node Glow, a matte topcoat over the whole model will dull that glow. Mask or avoid the glowing area, or apply gloss only there so the fluorescence stays bright.
Spray or brush-on?
Spray sealer is the fast option for terrain and large batches. GameMaster: Matt Sealer is a 300ml water-based acrylic spray that gives a matte protective finish, which suits sealing and protecting gaming terrain. Brush-on varnish gives you more control on small models and lets you target gloss only where you want it. Many painters use spray for the bulk of the army and a brush for touch-ups, lenses, and any area where a spray would be awkward.
How to test before you commit
Always test on a spare model or a painted piece of sprue first. Humidity and temperature affect spray behaviour, and some finishes look different once fully dry. Apply thin coats rather than one heavy pass, and let each coat dry before judging the result. If a matte coat looks chalky or uneven, the usual cause is spraying too far away or in damp conditions rather than a fault with the product itself.
Decision rules for choosing a topcoat
- Gaming terrain and boards: Terrain gets handled, stacked, and stored. Use a matte sealer so the paint survives transport and the surface stays non-reflective under lights. Default to matte for anything that lives in a box or on a table.
- Army and batch painting: When you need to seal dozens of models quickly, a spray matte sealer covers the most models with the least fuss and keeps the whole force looking consistent. Spray matte for the bulk, then brush gloss only on the details that need it.
- Glowing effects and lenses: Fluorescent paints and bright lenses lose impact under a matte layer. Keep matte off those areas and use gloss or no topcoat there instead. Mask or avoid glowing areas before you spray matte.
- Display pieces and competition models: A single finish rarely suits a whole display model. Use matte for cloth and skin, and gloss for gems, eyes, and wet surfaces so each material reads correctly. Mix finishes by area rather than choosing one for the entire model.
Products that fit this decision
- GameMaster: Matt Sealer: GameMaster: Matt Sealer is a 300ml water-based acrylic spray that gives finished pieces a reliable matte protective finish, ideal for sealing and protecting gaming terrain. It is the practical default for terrain and army-wide sealing because it protects paint without adding shine.
- Warpaints Fanatic Effects: Power Node Glow: Warpaints Fanatic Effects: Power Node Glow is a one-coat fluorescent paint for glowing lenses, power weapons, and magical spells. Fluorescent effects read best without a matte layer over them, so plan your topcoat around these areas rather than sealing the whole model flat.
- Warpaints Fanatic: Medieval Forest: Warpaints Fanatic: Medieval Forest is a dark greyish green that works as a fine base tone or layer for cool green projects. A matte topcoat keeps this desaturated green reading as intended instead of adding a reflective sheen that changes the colour impression.
Who should choose which finish
Best for
- Players sealing terrain, boards, and full armies who want protection without shine
- Painters who want one reliable matte spray for most of their collection
- Anyone whose paint job relies on desaturated or natural-looking colours
Not for
- Painters who want a deliberate wet or glassy look across an entire model
- Sealing directly over fluorescent effects if you want them to stay bright
- Anyone who needs a single product to create both matte and gloss finishes on the same piece
