Overview

Dulux Trade Aqua UniPrimer is a high-performance, fast-drying, water-based primer designed for superior adhesion on all major interior and exterior surfaces. Ideal for wood, metal, uPVC, and even glossy pre-painted finishes, it penetrates porous substrates, seals surfaces, and effectively blocks tough stains such as water, nicotine, grease, and tannin bleed. This versatile primer also inhibits rust and delivers excellent opacity, doubling as an undercoat for a smooth, professional finish.

No sanding required before application
Acts as a primer, sealer, stain block, and undercoat
Suitable for wood, metal, uPVC, and pre-painted surfaces

Area	Interior & Exterior
Recommended Use	Priming all major interior & exterior substrates, can be used as an undercoat that covers a variety of stains.
Base	Water-Based
Coverage	Up to 10m2 per litre
Drying Time	Touch dry in 30 minutes
Re-Coat Time	1 Hour
Recommended Coats	1-2 Coats
Application Method	Brush, Roller or Sprayer
Clean Up	Remove as much product as possible from the equipment before cleaning with water

Preparation

To achieve the best results, ensure all surfaces to be painted are sound, clean, and completely dry. New surfaces must be fully dry before painting. Remove all defective or poorly adhering material, including efflorescence, dirt, grease, and wax.

Bare Metal Surfaces

Soak a sanding pad in a mild alkaline cleaning solution.
Lightly abrade the bare metal surface.
Leave the surface for 10 minutes, then lightly abrade again.
Rinse thoroughly with clean water.
Allow the surface to dry completely before applying Dulux Trade Aqua UniPrimer.

Important Safety Note

Special precautions must be taken when preparing pre-1960s paint surfaces on wood or metal, as they may contain harmful lead. Follow appropriate safety guidelines and use suitable protective equipment during preparation.

Application

After completing all necessary surface preparation, apply one coat of Dulux Trade Aqua UniPrimer.

When treating stains caused by water or damp, ensure the underlying cause has been fully resolved before painting.
Finish with 1–2 coats of a suitable Dulux Trade Topcoat.
Apply using a brush, roller, or spray
As with all water-based paints, do not apply at temperatures below 8°C, in line with British Standard BS 6150.
HVLP Spray: Thin by 20%. Use a #4 Fluid Set.
Airless Spray: May be thinned by up to 5%. Use a pressure of 1100–1500 psi (80–100 bar), recommended spray tip sizes: 208/210 or 308/310 FFLP. Use 100 mesh (blue) filters in both the manifold and spray gun.
When using a brush or roller no thinning required.
Spray: Thin 20% for HVLP and up to 5% for Airless application.
Touch Dry: Approx. 30 minutes, depending on temperature and humidity.
Recoat: 1 hour.
For lower temperatures, high humidity, large areas, stain blocking, or tinted product, allow 2 hours before recoating.
Curing: The dry film achieves full adhesion strength after 7 days.