One of the most basic distinctions when choosing a paint: water-based or solvent-based? The choice isn't only about smell — it affects your health, how easy the paint is to use, its durability and the environment. In this guide we explain the differences between water-based and solvent-based paints, their advantages, and when each is the right call.
The basic difference: what carries the binder?
Paint is made up of pigment (colour), a binder (the glue) and a carrier liquid. The difference lies in that carrier:
- Water-based paint: The carrier is water. As it dries, the water evaporates. Odour-free or low odour, and it cleans up with water.
- Solvent-based paint: The carrier is a solvent (similar to thinner). As it dries the solvent evaporates, giving off a sharp smell and volatile compounds; cleaning up requires thinner.
Side by side
- Smell and health: Water-based is almost odour-free and healthier; comfortable to use indoors. Solvent smells sharply and needs good ventilation.
- Cleaning up: Water-based brushes wash out with water; solvent needs thinner.
- Environment: Water-based releases fewer volatile compounds and is eco-friendlier.
- Drying: Water-based generally dries faster.
- Ease of use: Water-based is far more practical for hobby, home and children's projects.
- Yellowing: Quality water-based acrylics don't yellow over time; some solvent-based paints can.
Where solvent-based still has the edge
Solvent-based paints may still be preferred in some very demanding industrial and outdoor conditions (certain protective metal systems, for example). But for virtually all home, hobby, décor and art work, water-based paints today give the same result or better — and do it odour-free and safely.
Why water-based (acrylic) is better for most jobs
- Odour-free; safe at home, with children, indoors.
- Cleans up with water; no cost or smell of thinner.
- Dries quickly, making layered work easy.
- Kinder to your health and the environment (low volatiles).
- Works on a wide variety of surfaces (hybrid acrylics especially).
ART IST acrylic paints are entirely water-based; and for an even more responsible choice, take a look at our Upcycle series.
How do I read the label?
If the label says "water-based", "thin with water" or "cleans up with water", it's water-based. If it says "thin with thinner" or "solvent", it's solvent-based. If you're unsure, ask the retailer; this matters both for your health and for how you'll apply it.
Common mistakes
- Thinning a water-based paint with thinner: It ruins the mix; use water with water-based paint.
- Working with solvent indoors without ventilation: A health risk; always ventilate.
- Trying to clean a solvent brush with water: It won't clean; you need the right solvent.
- Layering the two types incompatibly: There can be adhesion problems; prepare the surface and test.
Frequently asked questions
Is water-based paint less durable?
No. Modern water-based acrylics are highly durable; with varnish over the top they're more than adequate for indoor and outdoor use.
Is there such a thing as odourless paint?
Yes — water-based acrylics are almost odour-free and comfortable to use indoors.
Which one for children's projects?
Water-based; it's odour-free and cleans up with water, making it safe and practical (supervision is still recommended).
Does water-based hold up outdoors?
Yes; finished with a suitable varnish, it lasts well against sun and rain.
Can I switch from solvent-based to water-based?
Yes; clean the surface and sand it lightly. For most jobs water-based gives the same result, more cleanly.
In short, for virtually all home, hobby, décor and art work, water-based paint is healthier, more practical and kinder to the environment. Take a look at our water-based acrylic paints and enjoy an odour-free, easy painting experience!
