16 Jul 2026

Ronseal High Performance Wood Filler

Ronseal Hall: Hall 17-20 Stand: 19E40-G41
  • Ronseal High Performance Wood Filler
  • Ronseal High Performance Wood Filler
  • Ronseal High Performance Wood Filler
Ronseal High Performance Wood Filler Ronseal High Performance Wood Filler Ronseal High Performance Wood Filler

Description

Ronseal High Performance Wood Filler is a versatile solution for repairing wood indoors and outdoors, filling to any depth without shrinking or cracking. Hardening in just 30 minutes, it creates a durable base that can be drilled, screwed, planed, painted, stained or varnished. Designed for long-lasting repairs in demanding conditions, it delivers a smooth matt finish and is easy to apply with a flat scraper.

Product Features

  • For use inside or outside – so you can tackle any repair job without worrying about location
  • Won't shrink or crack – helps maintain a smooth, durable finish over time
  • Fill to any depth – lets you complete repairs in one go without layering
  • Hardens in just 30 minutes – so you can get the job finished faster
  • Can be drilled, screwed or planed – makes it versatile for a wide range of repairs
  • Can be stained, varnished and painted – so you can match your finish perfectly
  • Available in 3 different sizes – Gives you the flexibility to choose the right amount for your project, helping reduce waste and cost
  • Available in 3 different colours – helping you find the closest match for your project
  • Matt finish – delivers a natural-looking result
  • Apply with flat scraper – ensures smooth, even application

Technical Information

Usage: Interior/ Exterior

Application Method: Spatula

Dry Time to Touch: 30 minutes

Dry Time to Recoat: 30 minutes

Dry Time to Cure: 30 minutes

Paint Base: Solvent-based

VOC: Medium

Colours: Natural, White, Dark

Size: 275g, 550g, 1Kg, 3.7Kg

Usage Guide:

Before you Start-

If you’re repairing rotten wood, remove any soft wood and treat it with Ronseal Wet Rot Wood Hardener. This will help the filler to stick and the repair to last.

If you’re using this wood filler indoors, open your doors and windows for added ventilation.

Application-

  1. Mix a pea-sized amount of hardener with a golf ball-sized amount of filler.
  2. Keep mixing until it’s all one colour – you can do this easily in the lid.
  3. Test the filler on a small area to check you’re happy with the colour.
  4. If you are, pack the filler into the hole and leave some raised above the surface to make sure it’s properly filled.
  5. Before it hardens, smooth it over with a knife. You have roughly 20 minutes to carve or shape the filler before it hardens.
  6. After 30 minutes, the wood filler will be hard and you can sand, plane, file, nail or screw it. You can also stain, varnish or paint over it.

Aftercare-

High Performance Wood Filler can cope with any weather so it will last for years.

Your tools can be washed in white spirit.

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