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Osmo Wood Filler is a water-based, quick-drying interior wood filler available in a wide range of colours. An easy-to-use filler that can fill cracks, holes and joints in wood and won’t shrink, sink, crack or fall out. It can be sanded after drying and coated with a finish. Osmo Wood Filler can also be stored indefinitely which means no waste.

  • Quick-drying
  • Fills small and large cracks
  • Does not shrink or fall out (suitable for ceilings)
  • Can easily be sanded at any time after drying
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If staining after application use Osmo Wood Filler natural/clear otherwise match the the colour to the wood.

Spot patching

  • Apply Osmo Wood Filler directly from the tub using a plastic or stainless steel putty knife.
  • If the hole is greater than 6mm, fill by layering in 6mm increments.
  • Allow to dry for 30 minutes or use a heat gun to speed the process.
  • Sand surface and remove all dust and debris.
  • Apply desired finish.

Trowel Filling

  • Mix Osmo Wood Filler in the tub with warm water, usually around 15% water by weight.
  • Mix until it has the consistency of toothpaste.
  • Apply prior to the final sanding.
  • Use a plastic trowel and work across the grain over the entire floor.
  • Ensure the is forced deep into voids.
  • Remove all excess.
  • Allow to dry for 30 minutes.
  • Osmo Wood Filler is fully dry if it sands to the consistency of talcum powder.
  • Sand surface (if grain filling do not use a grit coarser than 120).
  • Remove all dust and debris after sanding.
  • Apply desired finish.