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Build: 1.2.37 - Wed, 22 Jul 2026 05:04:58 GMT

Dulux Professional

Water Based Ultra5 Surfacer

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Dulux Professional

Water Based Ultra5 Surfacer

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About Dulux Professional Water Based Ultra5 Surfacer

DULUX PROFESSIONAL Ultra 5 Surfacer, Prep & Finish is a 100% acrylic low VOC surface preparation specially designed to be an important component in achieving a Level 5 finish on new or pre-painted interior plasterboard surfaces.

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Key Points
  • Versatile
  • Water based
  • Sands easily
  • Minimises problems of porosity difference between joints and substrate
  • Achieves high film build without running or sagging
  • May be tinted to light colours for use as a ceiling finish coat in dry areas
  • Consistent coverage
  • Easy clean up, low odour
  • Gives a better, smoother finish with less effort
  • Hides minor surface imperfections and promotes improved paint flow
  • Aid to achieve a Level 5 finish
  • High film build
Quick guide
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Touch Dry

2 Hours

Cleaning materials

Water

Application Tools

Air Spray, Airless Spray

Product specification
Precautions and limitations

Do not apply if temperature is under 10°C, or when temperature of surface may fall below 10°C during the drying period, otherwise film formation will not be complete and a fall-off in properties will result. For all walls and when product is used in bathrooms and other wet areas DULUX PROFESSIONAL Ultra 5 Surfacer, Prep & Finish must be topcoated with the appropriate DULUX finish coat.
Where accurate colour reproduction is required DULUX PROFESSIONAL Ultra 5 Surfacer, Prep & Finish must be top-coated with the appropriate DULUX finish coat.
When coating paper-faced wallboard that has aged and yellowed DULUX recommends that the surface be sealed with DULUX Prepcoat Sealer Binder.
For fibrous plaster surfaces DULUX recommends that the surface be sealed with DULUX Prepcoat Sealer Binder. As with all higher build water borne coatings, best drying is obtained when there is a reasonable airflow over the coated surface.

Performance guide
  • Weather: Not recommended for exterior use.
  • Heat Resistance: Up to 70° C.
  • Water: Excellent when topcoated with approved topcoat.
  • Solvent: Sensitive to aromatic hydrocarbons, alcohols and ketones.
  • Abrasion: Good when topcoated.
Surface preparation
Previously painted surface

All surfaces must be thoroughly clean and free of all loose dirt, grease, mould, mildew and wax, surface chalk and loose or flaking paint, efflorescence and loose surface plaster. Sand smooth and dust down. Prepare surface in accordance with the requirements of the chosen system.

How to apply
Airless/Conventional Spray

Conventional or airless spray.
Airless Spray: Should be applied using a "cross-hatch" method to produce a film build of 150 to 200 microns. This involves holding the gun approximately 600mm from the wall and spraying an even coat horizontally across the substrate with a 50% overlap. Spraying on the next coat vertically completes application.
An airless sprayer capable of applying 3.0 litres per minute at the pressure of 3300psi through a 21 to 27 thou tip with a 3/8 inch hose fitting should be used. Similar to the Graco 695 model. A 60 mesh in-line filter can be used. DO NOT USE FINE PAINT FILTERS.
Sanding: Sand to a smooth surface free of any sign of peel or texture with 180 to 220 grit sandpaper.
Stir contents thoroughly before and during use. Apply direct from the can. May be applied to dampened surfaces.

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