Acrylic paints are one of the most useful materials in modelling. Whether you build model railways, dioramas, military models, wargaming terrain, dolls houses, scale buildings or miniature scenes, acrylic paint can help turn plain plastic, wood, plaster, card or foam into something far more realistic.
For beginners, acrylic paints are a brilliant place to start. They are easy to use, usually low odour, quick drying and suitable for a huge range of modelling jobs. You can use them for basecoating, dry-brushing, washes, weathering, scenery painting, roads, rocks, buildings, figures and all kinds of small details.
This guide explains what acrylic paints are, how they are used in modelling, what surfaces they work on, when to use primer, how to thin them, and how to avoid the most common beginner mistakes.
Table of Contents
- What Are Acrylic Paints?
- What Are Acrylic Paints Used For in Modelling?
- Why Acrylic Paints Are Good for Beginners
- What Surfaces Can You Use Acrylic Paint On?
- Do You Need Primer Before Using Acrylic Paints?
- How to Apply Acrylic Paints to Models
- How to Thin Acrylic Paint for Modelling
- Using Acrylic Paints for Model Railway Scenery
- Using Acrylic Paints for Weathering
- Common Acrylic Paint Mistakes in Modelling
- How to Seal Acrylic Paint on Models
- What Colours Should Beginners Buy First?
- Acrylic Paints vs Enamel Paints vs Oil Paints
- Can You Mix Acrylic Paint with Other Modelling Materials?
- Acrylic Paint Safety, Storage and Clean-Up
- Quick Beginner Project: Using Acrylic Paints on a Small Scenic Base
- Frequently Asked Questions About Acrylic Paints for Modelling
What Are Acrylic Paints?
Acrylic paints are water-based paints made with pigment suspended in an acrylic binder. In simple terms, that means they can usually be thinned with water, cleaned from brushes with water while wet, and they dry into a flexible painted surface.
For modelling, acrylic paints are popular because they are versatile. They can be brushed on, airbrushed, stippled, dry-brushed, thinned into washes or mixed into scenic materials. A single pot of brown acrylic paint might be used to paint a muddy track, tint plaster, shade a stone wall, stain timber, weather a wagon or colour the base of a scenic landscape.
There are several types of acrylic paint a modeller may come across. Hobby acrylics are made specifically for models and miniatures. Craft acrylics are often cheaper and useful for scenery, baseboards and large areas. Artist acrylics can be thicker and stronger in pigment, which makes them useful for mixing, tinting and scenic work. For more detailed painting, you may also want to explore paint brushes for modelling and airbrushing for beginners.
What Are Acrylic Paints Used For in Modelling?
Acrylic paints are used across almost every area of modelling. On a model railway layout, they can paint scenery, rocks, roads, tunnel mouths, platforms, bridges, buildings, wagons, figures and small details. On a diorama, they can colour terrain, walls, ruins, groundwork, vehicles, equipment and background features.
One of the biggest advantages of acrylic paint is that it is not limited to neat, flat colour. It can be used as a base layer, a highlight, a shadow, a stain, a wash or a weathering effect. A grey acrylic paint can become concrete. A dark brown can become mud. A thinned black can become grime. A pale tan can become dust on a road, wagon or building.
For scenic modellers, acrylic paints are especially useful before adding texture. Painting the ground brown before applying static grass, fine turf or scenic scatter helps hide any small gaps. Painting rock faces in layers before dry-brushing makes them look less flat. Painting roads before adding dust and weathering creates a more convincing base.
Why Acrylic Paints Are Good for Beginners
Acrylic paints are ideal for beginners because they are forgiving. If the paint is too thick, it can usually be thinned. If the first coat looks patchy, another thin coat can be added. If the colour looks too bright, it can be toned down with a wash, dry-brushing or weathering powder.
They also dry quickly, which is very helpful when building scenery in stages. You can paint a terrain base, let it dry, add a darker wash, dry-brush the raised areas, then start adding scatter or grass without waiting days between steps.
Another beginner-friendly benefit is simple clean-up. Brushes, palettes and mixing pots can usually be cleaned with water before the paint dries. This makes acrylics more approachable than some solvent-based paints, especially for indoor modelling spaces.
For a starter modelling setup, acrylic paints sit nicely alongside PVA glue, modelling paste, air-drying clay, weathering powders and acrylic varnish. Together, those materials can cover a surprising number of beginner scenic jobs.
What Surfaces Can You Use Acrylic Paint On?
Acrylic paints can be used on many common modelling surfaces, but the result depends on how well the surface is prepared. Porous surfaces, such as plaster, filler, card, wood and foam scenery, often take acrylic paint very well. Smooth surfaces, such as plastic, resin and metal, usually benefit from primer first.
On model railway scenery, acrylic paints are excellent for plaster rock castings, carved foam terrain, filler-based groundwork, retaining walls, roads, pavements and scenic bases. They also work well on MDF and plywood baseboards, especially when used as an undercoat before adding texture.
For plastic kits, resin accessories or metal figures, acrylic paint may struggle to grip if the surface is shiny, greasy or dusty. Washing parts before painting and using a suitable model primer can make a big difference. This is especially important for small details such as telephone boxes, platform shelters, figures for model railways and lineside cabinets.
Do You Need Primer Before Using Acrylic Paints?
You do not always need primer, but it is often a good idea. Primer helps paint stick to the surface and gives the colour above it a more even base. It is particularly useful on plastic, resin, metal and any surface that will be handled regularly.
For scenery, primer is less formal but still useful. A brown or grey basecoat can act like a scenic primer on foam, plaster, filler and terrain. This prevents bright white patches showing through later if grass, scatter or ballast does not cover every tiny area.
Different primer colours can help in different ways. Grey is a good general-purpose choice. White makes bright colours stand out. Black creates deeper shadows and is often used for miniatures. Brown is excellent for scenic groundwork because it already looks like earth beneath the surface detail.
A useful future article would be do you need primer for models, as this is one of the most common beginner questions in model making.
How to Apply Acrylic Paints to Models
The simplest way to apply acrylic paint is with a brush. For the best finish, use several thin coats rather than one thick coat. Thick paint can hide fine detail, leave brush marks and dry unevenly. Thin layers take a little longer, but the result is usually much better.
For larger areas, such as terrain, roads, backscenes and scenic boards, a wider brush or sponge can be useful. Stippling with a sponge creates broken, uneven colour that looks more natural than a perfectly smooth coat. This is useful for asphalt roads, stone walls, rock faces and muddy ground.
Acrylic paints can also be airbrushed when correctly thinned. Airbrushing is useful for smooth coats, subtle shading, camouflage, faded paint, large scenic areas and weathering. It does require more practice and cleaning, so beginners may prefer to start with brush painting before moving on to airbrushing acrylic paints.
Two of the most useful techniques are washes and dry-brushing. A wash is thinned paint that runs into low areas and brings out shadows. Dry-brushing uses very little paint on the brush to catch raised detail. Together, they can transform plain moulded plastic, plaster rock, brickwork, timber and groundwork.
How to Thin Acrylic Paint for Modelling
Thinning acrylic paint is one of the most useful skills a beginner can learn. Paint straight from the pot may be too thick for fine detail, especially on small models. By thinning it slightly, you can create smoother coats and avoid covering surface detail.
For brush painting, start with a small amount of paint on a palette and add a little water at a time. You are usually aiming for paint that flows smoothly but still covers the surface. If it becomes too watery, it may pool, streak or dry with weak colour.
For washes, the paint should be much thinner. A dark brown or black acrylic wash can be used on brickwork, timber, stone, machinery, wheels, trackside details and scenic textures. For scenery, washes are especially good for adding depth to rock moulds, retaining walls and cobbled streets.
For airbrushing, many modellers prefer proper acrylic thinner rather than plain water, as it can help the paint flow more consistently. Always test the mix before spraying a finished model.
Using Acrylic Paints for Model Railway Scenery
Acrylic paints are extremely useful for model railway scenery because scenery often needs colour before it needs detail. A plain white plaster hillside or pale foam embankment will not look realistic until it has been painted, shaded and blended into the surrounding landscape.
Start by painting terrain bases in natural earth colours. Browns, greys, khaki tones and muted greens are usually more useful than bright colours. Once the base is painted, you can add static grass, leaf scatter, clump foliage, hedge materials or fine turf over the top.
For rocks and cuttings, acrylic paints can be layered. Begin with a mid grey or brown, add a dark wash to settle into the cracks, then dry-brush with lighter greys, creams or dusty colours. This simple process gives rock faces more depth and makes the detail stand out.
Roads and pavements can also be painted with acrylics. Avoid pure black for tarmac, as real roads are usually faded, dusty and uneven. Greys, charcoal, brown-grey and pale dry-brushed highlights often look more realistic. Add extra weathering around level crossings, station yards, goods yards and industrial buildings.
Using Acrylic Paints for Weathering
Weathering is the process of making a model look used, aged or exposed to the real world. Acrylic paints are very useful for beginner weathering because they can be thinned into washes, dabbed on as stains or dry-brushed as dust and highlights.
For dirt and mud, use browns in several shades rather than one flat colour. Dark brown works well in low areas, while lighter tan or dusty grey can be dry-brushed over raised surfaces. Around track, yards and depots, acrylic paint can suggest oil, brake dust, soot and general grime.
For rust, start with dark brown rather than bright orange. Real rust varies in colour, so use dark brown, reddish brown and small touches of orange for newer rust. This works well on corrugated metal, oil drums, water towers, fencing, scrapyards and industrial pipework.
Black and dark grey acrylic washes are useful for smoke staining, especially around chimneys, tunnel mouths, engine sheds and old industrial buildings. Use them lightly and build the effect slowly. Heavy black paint can look harsh, but soft layers of grime can look very convincing.
Common Acrylic Paint Mistakes in Modelling
The most common mistake is applying acrylic paint too thickly. Thick paint can fill small details, leave ridges and dry with visible brush marks. It is almost always better to apply two or three thin coats than one heavy coat.
Another common mistake is using colours that are too bright. Real scenery is usually muted by weather, dust, distance and age. Bright green grass, pure black roads and fresh orange rust can look toy-like. Muted colours usually create a more realistic result.
Beginners also sometimes forget to paint the base before adding scenic materials. If white plaster or blue foam shows through later, the scene can look unfinished. A simple brown or grey basecoat can prevent this problem.
Not allowing paint to dry between layers can also cause trouble. Washes, dry-brushing and weathering work best when the previous layer has dried properly. Rushing this stage can lift paint, create muddy colours or remove detail you wanted to keep.
How to Seal Acrylic Paint on Models
Acrylic paint does not always need sealing, but a varnish can protect the finish and change the final appearance. This is especially useful on models that will be handled, moved, cleaned or used for gaming.
Matt varnish is usually the best choice for realistic scenery, buildings, figures and weathered surfaces. It removes shine and helps the model look less plastic. Satin varnish gives a slight sheen, which can be useful for painted wood, vehicles or newer surfaces. Gloss varnish is useful for glass, wet mud, puddles, polished surfaces and some water effects.
When sealing scenery, be careful not to flatten delicate materials such as grass fibres, leaves or loose scatter. It is often better to seal painted surfaces before adding the final scenic textures. A future guide to acrylic varnish for models would link naturally from this section.
What Colours Should Beginners Buy First?
You do not need every colour to start modelling with acrylic paints. A small, useful selection is better than a large box of colours you rarely use. For scenery, begin with earth tones, greys, greens, black, white and a few weathering colours.
A good beginner palette might include dark brown, mid brown, tan, black, white, dark grey, light grey, olive green, muted green, brick red, cream and rusty brown. These colours can be mixed into many useful shades for roads, stone, mud, grass, timber, brickwork and weathering.
For model railway scenery, browns and greys are often more useful than bright colours. Most realistic scenes rely on subtle variation rather than strong colour. A slightly dull paint colour can come alive once it is dry-brushed, washed and surrounded by other scenic materials.
This section could link to a future article on essential paint colours for model scenery or beginner paint set for modelling.
Acrylic Paints vs Enamel Paints vs Oil Paints
Acrylic paints are not the only paints used in modelling, but they are often the easiest for beginners. They dry quickly, clean up easily while wet and can be used on a wide range of modelling surfaces.
Enamel paints have also been used by modellers for many years. They can produce a tough, smooth finish and are still popular for certain types of kit building. However, they usually need suitable thinners and more careful ventilation, which can make them less beginner-friendly.
Oil paints are often used for advanced weathering, filters, streaking and subtle blending. They dry slowly, which gives the modeller more working time. For beginners, they are useful later on, but acrylics are usually the simpler starting point.
For scenery, acrylic paints are hard to beat. They are quick, adaptable and easy to combine with texture paste, plaster, scenic scatter, weathering powders and PVA glue.
Can You Mix Acrylic Paint with Other Modelling Materials?
Yes, acrylic paint can be mixed with many modelling materials, especially for scenery. One common use is tinting filler, plaster or modelling paste before applying it to the layout. This means that if the surface chips or gets scratched, it is less likely to reveal a bright white mark underneath.
Acrylic paint can also be mixed into PVA glue for certain scenic jobs, although it is wise to test the mixture first. A brown-tinted glue mix can be useful under soil, scatter or rough ground textures. Paint can also be mixed into texture paste to create mud, concrete, asphalt or old plaster effects.
For water scenes, be more careful. Acrylic paint can colour the base beneath a pond, river or canal very effectively, but adding too much paint directly into resin or water products may affect clarity or curing. It is often better to paint the riverbed or pond base first, then apply epoxy resin or water effects gel over the top.
Acrylic Paint Safety, Storage and Clean-Up
Acrylic paints are generally convenient to use, but good habits still matter. Work in a sensible, ventilated space, especially when spraying, sanding painted surfaces or using primers and varnishes. Keep lids closed when paints are not in use, as acrylic paint can dry quickly in pots, bottles and palettes.
Clean brushes before the paint dries. Once acrylic paint has dried in the bristles, it can be difficult to remove and may ruin the brush. Keep one water pot for rinsing and another for cleaner water if you are doing finer painting.
Do not leave paint around bottle threads or pot lids, as dried paint can stop them sealing properly. Store paints away from extreme heat or cold, and shake or stir them well before use if they have been sitting for a while.
A useful related article would be how to clean paint brushes for modelling, especially for beginners building their first modelling kit.
Quick Beginner Project: Using Acrylic Paints on a Small Scenic Base
A simple scenic base is a great way to practise using acrylic paints. Start with a small piece of card, foamboard, MDF or scrap timber. Add a little filler or modelling paste to create uneven ground, then let it dry fully.
First, paint the whole base with a mid brown acrylic paint. This becomes the earth colour beneath everything else. Next, add a darker brown wash into dips, cracks and low areas. Once dry, lightly dry-brush the raised areas with a tan or pale earth colour.
Now add a few scenic materials. Sprinkle fine turf, dirt scatter or short static grass into patches of wet glue. Leave some painted earth showing through so the scene does not look too uniform. Add a small stone, twig, fence post or figure to give the base a sense of scale.
This small exercise teaches several useful skills: basecoating, washing, dry-brushing, colour variation and blending paint with scenic texture. It is also a good starting project before tackling larger scenes such as model railway embankments, country lanes, station yards or diorama bases.
Frequently Asked Questions About Acrylic Paints for Modelling
Are acrylic paints good for model making?
Yes. Acrylic paints are very useful for model making because they are easy to apply, quick drying and suitable for many modelling jobs, from scenery and buildings to figures, vehicles and weathering.
Can you use normal acrylic paint on models?
You can use ordinary acrylic paint for many scenic and craft modelling jobs. For fine plastic kits, miniatures or detailed models, hobby acrylics may give better coverage, finer pigment and improved control.
Do acrylic paints stick to plastic?
Acrylic paints can stick to plastic, but smooth plastic usually benefits from cleaning and priming first. Primer gives the paint a better surface to grip and helps prevent rubbing or flaking.
Can acrylic paint be used on model railway scenery?
Yes. Acrylic paint is excellent for model railway scenery. It can be used on terrain, rocks, roads, buildings, tunnel mouths, platforms, bridges, backscenes and scenic bases.
Can you thin acrylic paint with water?
Many acrylic paints can be thinned with water, especially for brush painting and washes. For airbrushing, a proper acrylic thinner may give a smoother and more reliable result.
Should acrylic paint be sealed?
Sealing is not always necessary, but it can protect the paint and adjust the finish. Matt varnish is useful for realistic scenery, while gloss varnish works well for wet, shiny or glass-like effects.
What is the best acrylic paint finish for realistic models?
For most realistic models and scenery, matt or low-sheen finishes look best. Gloss finishes should usually be saved for glass, water, wet mud, polished surfaces or specific details.
Final Thoughts: Why Acrylic Paints Belong in Every Modeller’s Toolkit
Acrylic paints are one of the most flexible materials a modeller can own. They are useful for beginners, but they also remain valuable as your skills improve. From simple basecoats to detailed weathering, from painted scenery to dry-brushed stonework, acrylics can be used in almost every part of a modelling project.
For model railway scenery in particular, acrylic paints are a foundation material. They help remove the unfinished look of bare plaster, foam and plastic, and they prepare the scene for grass, ballast, scatter, foliage, water and weathering.
Start with a small range of useful colours, practise on scrap materials, and build effects in thin layers. Once you understand basecoating, washes, dry-brushing and sealing, you will find yourself reaching for acrylic paints on almost every modelling project.
Related topics to explore next include acrylic varnish, dry-brushing, weathering powders, static grass, rock moulds, PVA glue, model primer, scenic scatter and painting model railway scenery.
