Short answer: Weathering is the family of techniques that takes a model from "fresh out of the box" to used, aged and battle-worn. Rust, scratches, chipped paint, mud, dust, soot, water stains and oxidation all fall under this umbrella. As a rule you apply it near the end of painting, in layers, and always following physical logic.
The goal of this guide is to explain weathering as a whole, without drowning you in individual techniques: what it is, why it reads as believable, what order to do it in, and where beginners get stuck. The individual techniques (chipping, rust, mud) each get their own detailed posts; here, we build the reasoning that ties all of them together.
What is weathering and what is it for?
At its simplest, weathering is the craft of imitating, on a miniature, what the real world does to an object over time. A flat, clean, single-tone piece of armour never looks real, because real armour gets scratched, rusts, collects mud and fades in the sun.
Here's the payoff: weathering adds depth and character. A well-worn tank can read as "real" far more easily than a thousand hours of blending (smooth colour transitions) ever could. But there's a critical catch — good weathering is not random dirt.
As Wxmodelcraft puts it: "Weathering isn't about making a model dirty — it's about telling a story." In other words, every mark should be a sentence about that object's past.
Think about it: soot trails off the exhaust, the step you climb on slowly wears down, water running off a panel leaves a vertical streak. When that kind of logic is behind a mark, the eye accepts it as true straight away.
How does it work? The four physics rules of weathering
Weathering's believability comes from observation and logic, not fancy materials. That's because wear in the real world isn't random; it follows a few simple rules. Follow them and the effect reads as "real"; break them and it looks fake.
- Gravity: Rust and grime run top to bottom, which is why streaks are always vertical. Rust flowing upward jars the eye instantly.
- Contact: The most touched, rubbed surfaces wear most — edges, weapon grips, steps, door handles, elbows. Paint chips here and the metal underneath shows through.
- Exposure: Upper surfaces open to air and rain fade and rust; protected lower surfaces stay cleaner but collect mud and dust.
- Source: Every effect has a cause. You'd expect soot around the exhaust and barrel, oil leaks at joints, and bright bare metal on rubbing parts.
Once you've internalised these four, you place each effect by logic rather than guesswork.
Step by step: how do you weather a model with logic?
Weathering isn't one move; it's an ordered workflow. The general rule to keep in mind: work from the bottom up. Surface-level effects first (chipping, rust base), then the effects that sit on top (streaks, mud, dust). Break the order and the layers smother each other, killing the depth you're after.
- Decide the story first. How old is this model? What climate? A desert tank or a swamp walker? Don't touch a brush until you've answered this.
- Start with chipping. Use a sponge or brush to put small scratches and chips on edges and contact points. These form the base for rust to grab onto.
- Then add rust and oxidation. Work rust with pigments or oils around the chips and in areas that stay damp. Rust always spreads both above and below the chipped paint.
- Next, lay in vertical streaks and grime. Follow gravity: thin runs flowing down from panel lines, bolts and the undersides of ledges.
- Pile mud and dirt low. Use texture and splatter to weight the wheels, tracked feet and lower hull.
- Save dust and pigment for last. This is the topmost, lightest layer. Dust it gently onto horizontal surfaces and corners.
What really matters isn't one uniform layer of dirt but several thin layers stacked together: a light filter, spots of rust, vertical streaks and dust below. That combination beats a single heavy effect every time.
Which materials and brushes?
Weathering isn't done with one product; each effect family wants its own tool. Even so, you don't need them all to start — begin with sponge chipping and add as you go.
- Pigments and powders: Used for dust, rust, ash and mud. Vallejo, AK Interactive and MIG (Ammo) pigments are common choices.
- Oil paints: For washes, filters and the dot technique. Because they dry slowly, you can work them for a long time, which makes them ideal for soft transitions.
- Technical paints: Ready-made effect paints like Citadel's rust and verdigris (copper patina) paints noticeably speed things up.
- Sponge: The cheapest, most effective chipping tool. Blister foam or a makeup sponge is enough.
- Old, worn brushes: Keep brushes you can sacrifice for stippling and drybrushing (dry brush).
- Solvents and thinners: You'll need the right thinner for oils and enamels — and ventilation is mandatory when you use them.
Finally, it's worth counting reference photos as a "material" too: shots of real rusty vehicles, aged armour and battle gear are the best teacher weathering has.
The most common mistakes
Weathering mistakes are largely predictable, because they all share one root: dropping the logic and assuming "more effect = better." Here are the ones we see most.
- Overdoing it. The number-one mistake. Covering everything in rust and grime turns the model into a "mud ball." Remember, less is more; be selective.
- Breaking physics. Rust running upward, wear in illogical spots, a water stain on a bone-dry corner. The eye catches these straight away.
- Uniformity. One rust colour, one type of scratch, the same intensity everywhere — it ends up reading monotone and fake.
- Ignoring safety. Oils and enamels are solvent-based; don't work in a closed room without ventilation.
- Storyless weathering. If you place a mark and can't answer "why is this here?", don't place it at all.
Pro tips
If we boiled this guide down to a single line, it would be: prefer less to more, and know the reason for every mark. The notes below are the small habits that put that principle into practice.
- Work from reference. Collect photos of rusty vehicles and aged armour on your phone. Imitating reality always gives better results than imagining it.
- Build the "ask the logic" habit. Before each effect, ask yourself: why would this mark be exactly here? No answer, no brush.
- Layer it. Several thin effects always read more real than one heavy one. Build wear patiently, coat by coat.
- Set the story first. Decide the model's age, climate and use, then steer the weathering by that decision.
- Test on a spare. Trying a new effect for the first time? Test it on a scrap part before you touch the model.
Frequently Asked Questions
When should I start weathering?
Weathering comes near the end of painting. You finish the basecoat, shadows, highlights and details first; weathering is the final layer that sits on top of all that. The one exception is the chipping base — some methods set it before the base colour, but visible wear is always the last stage.
Is weathering hard for beginners?
Not all of it. Sponge chipping is a beginner's friend: dab a little paint onto the tip of the sponge and touch the edges. The genuinely hard parts are oils, multi-layer rust and pigment work. So start with the sponge, get the logic down, then move on to advanced techniques.
How do I weather without overdoing it?
Golden rule: less is more. After you place an effect, don't ask "is it enough?" — ask "is it too much?" Be selective, mark only the logical spots, and keep your layers thin. When you step back, the model should look used, not dirty.
Does rust go everywhere?
No. Rust forms only where bare metal is exposed and moisture lingers: around chips, on bolts, on edges and in recesses where water pools. Protected, dry, constantly-touched surfaces usually stay clean or shine as bare metal. Rust placed without a reason always looks fake.
Do I need an airbrush for weathering?
No. Chipping, rust, streaks and mud can all be done with a brush, sponge and pigments. An airbrush only speeds up broad, soft work like dust, soot and overall tone shifts, but it isn't required. All core weathering is possible by hand.
In what order do I lay the layers?
The general rule is bottom to top: chipping first, then rust, then vertical streaks, then mud, and dust and pigment last. Surface-level, permanent effects go underneath; light, temporary effects go on top. Break the order and the upper layer smothers the lower one, killing the depth.
If I ruin the weathering, can I undo it?
Usually yes. Pigment and dust can be reduced with a brush and solvent before they set; oils, meanwhile, can be corrected for hours until they dry. That's exactly why it's smart to seal a varnish coat before heavy effects — if you slip, you don't risk the paint underneath.
Key takeaway and next step
The one thing to remember: weathering isn't dirt, it's a story. Follow gravity, contact, exposure and source; build many layers from few materials; and know the reason for every mark. Once that logic clicks, the sub-techniques (chipping, rust, mud) come much more easily.
Your natural next steps are Chipping and Rust Effects. For vertical marks see Streaking & Grime, for the lower hull see Mud & Dirt Effects, and for the top layer see Weathering Pigments & Powders.
Before you start weathering, stock the shelf: for sponges, pigments, old brushes and reference supplies, browse our paints, brushes & hobby supplies.