Dulux Prepcoat 1Step Oil Based Primer, Sealer & Undercoat is a fast drying prepcoat suitable for the complete preparation of interior and exterior surfaces.


  • Multi-surface preparation
  • Interior and exterior suitable
  • Superior tannin blocking
  • Available in 500ml, 1L, 4L
  • Available in White base


  • Excellent adhesion
  • Excellent stain blocking, ideal for locking in water based stains
  • Fast drying, 30 minutes touch dry, 1 hour recoat
  • Can be used under Dulux topcoat (water or oil based)
  • Good sanding properties

Product code: 36089141


Dulux 1Step Oil Based Primer, Sealer & Undercoat is a fast drying interior/exterior prep coat with excellent hiding and good hold-out for enamel topcoats.

Surface preparation

All surfaces must be thoroughly dry, clean and free of all loose dirt, surface chalk, grease, mould, mildew and wax, loose or flaking paint. For weathered timber, sand back to fresh timber and dust off. For interior timber, lightly sand and dust off. Apply 1 coat of Dulux 1Step Oil Based Primer, Sealer & Undercoat. Can be used on most interior and exterior masonry surfaces but other prepcoats such as Dulux 1Step Acrylic Primer, Sealer & Undercoat may be preferred. New interior set plaster: Use DULUX Sealer Binder.

Product downloads


12 square metres per L
Masonry, Timber
Door, Window frame, Trim, Skirting
Bedroom, Living room, Hallway, Dining room, Laundry, Kitchen

Application Guide

Application Method
Roller, Brush, Con-Spray.

Health Safety

Clean Up
Clean all equipment with mineral turpentine.


DULUX 1Step Oil Based Primer Sealer Undercoat is suitable for use over interior and exterior timber. Can also be used on masonry surfaces. Ideal for tannin rich surfaces e.g Cedar