When choosing a paint, one of the biggest decisions is whether to use a solvent-based or water-based product. Both have strengths and weaknesses, and there are common misconceptions — especially around VOCs — that can lead to confusion.
What Are Solvent-Based Paints?
Also known as oil-based paints, these use organic solvents such as mineral spirits as carriers for pigment.
Advantages:
✅ Durability – hard, glossy, long-lasting finish.
✅ Smoothing – fills small cracks and imperfections.
✅ Adhesion – bonds well to most surfaces.
✅ Moisture resistance – suitable for kitchens, bathrooms, and exteriors.
✅ Colour retention – holds colour better over time.
Disadvantages:
❌ Longer drying times.
❌ Flammability risks during use and storage.
What Are Water-Based Paints?
Also called latex or acrylic paints, these use water as the main carrier.
Advantages:
✅ Fast drying – multiple coats in one day.
✅ Easy cleanup – soap and water only.
✅ Non-flammable – safer to store and use.
Disadvantages:
❌ Less durable than solvent-based alternatives.
❌ Weaker adhesion on oily or previously solvent-coated surfaces.
❌ Colour fade is more common.
❌ Moisture susceptibility – can peel or crack in damp areas.
❌ Raises wood grain, needing extra prep.
The VOC Misconception
Water-based paints are often marketed as “eco-friendly” because they tend to have low VOCs. However, many modern solvent-based paints now compete directly on VOC levels.
For example:
Water-based matt paint: up to 30 g/L VOC
Water-based gloss: up to 100 g/L VOC
Solvent-based synthetic matt: 18 g/L VOC
Solvent-based gloss: 70 g/L VOC
In some cases, solvent paints actually have lower VOCs than water-based.
Eco-Friendliness: Which Is Better?
There is no single winner.
Water-based paints are easier to clean and generally low in VOCs, but may contain biocides and have shorter lifespans.
Solvent-based paints may have higher VOCs in some formulas but can last longer, meaning less frequent repainting and reduced overall resource use.
Final Verdict
Both water-based and solvent-based paints have their place. The most important thing is to:
✅ Check the actual VOC content on the product label or TDS.
✅ Choose a paint that matches your project needs (durability, ease of use, finish).
✅ Don’t rely on old myths — eco-friendliness depends on formulation, not category.
Want to know more? See our VOC Information Page for detailed product VOC levels and safe use guidance.
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