Dulux Enviro2 ASU is a very low VOC, low odour premium sealer and undercoat designed for interior painting projects. It seals porous surfaces like bare plasterboard so that topcoats apply more evenly and look better. Because it has high opacity and easy sanding properties, you can prepare walls quickly and move on to finishing coats with confidence.

This premium prepcoat is part of the Dulux envirO2™ range, which focuses on environmental performance and indoor air quality by offering very low VOC content, low odour and strong sealing power.

Key Features & Benefits

• Very low VOC and low odour — ideal for interior areas and sensitive environments.

• Seals porous surfaces — evens out surface porosity for smoother topcoat application.

• Premium undercoat performance — provides strong opacity and improves topcoat coverage.

• Easy to sand — helps achieve a uniform surface before finishing coats.

• Water‑based formula — spreads smoothly and cleans up with water.

• Part of an eco‑focused range — supports healthier indoor air quality and sustainable choices.

How to Use

First, ensure the surface is clean, dry and free of loose dust. Then apply Enviro2 ASU with a brush, roller or spray. Next, allow it to dry and lightly sand if needed. Finally, apply your chosen Dulux topcoat for a lasting finish.

With Enviro2 ASU, you get a strong base that improves finish uniformity and performance, especially on fresh plaster or other porous walls in homes, offices or living spaces.