POLYFILLA Professional Exterior Timber Filler

PolyFilla SKU: PF-ET-750
Sale price


Regular price $31.45
Tax included.

Polyfilla Professional Exterior Timber Filler is a durable ready to use, acrylic based, flexible filler for filling cracks, holes, dents and splits in weatherboards and other exterior woodwork such as decking and fencing.

Unlike more rigid wood fillers, it flexes with the natural movement of wood and will not crack, split or fall out.

Can be stained, clear-finished, painted, nailed, screwed, sanded or planed.


NOTE: Not for permanently wet areas or joints between weatherboards,
floorboards, panels etc.

  • Can be sanded or planed
  • Flexible finish so will not crack
  • Suitable for stain, tint, paint and varnish
  • Interior and exterior use on timber surfaces
Application Tips
  • Ensure surfaces are clean and dry.
  • Remove any rotten wood and fix split timber firmly before filling. Priming is unnecessary.
  • Apply firmly with filling blade.
  • Allow to dry (*2“3 hrs in thin 2“3mm applications depending on humidity).
  • For deeper jobs apply in 10mm layers, allowing each layer to dry before applying the rest. Allow longer drying times (24 hours minimum) if painting with oil based paints, for deeper applications or in colder weather.
  • Sand back and paint with with a quality exterior water or oil-based paint, or stain and clear finish.
  • For a smoother finish allow filler to dry, sand back and apply a very thin coat of filler. Allow this to dry then sand lightly with fine (>300 grit) sandpaper before painting or vanishing.
  • Protect from rain until painted over.
  • For best results, apply undercoat before applying water or oil based top coat.
  • Use Poly Gap filler or silicone sealant where joint movement occurs.
  • Clean up with water before filler dries.
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