Exterior Timber Cleaner

As with painting, a beautiful, long-lasting finish on timber depends on preparing the surface properly. Before applying any exterior timber coating it is important to remove all the dead timber fibres and surface contaminants that discolour the timber and impede the even absorption of the coating.

Feast Watson Woodclean is a powerful, oxalic acid-based preparation treatment that aids the removal of oils, mould, stains and tannins from new and weathered timber.

Ideal for rejuvenating grey, weathered timber, Woodclean is suitable for restoring decking, outdoor furniture, fences, pergolas and other exterior woodwork.

surface preparation

Sweep surface clean and thoroughly wet down with water


Dilute Woodclean in water by mixing 1 part Woodclean to 4 parts water.  Stir diluted mixture thoroughly. 

Apply Woodclean to dampened timber and scrub surface vigorously with a stiff bristle brush or broom. Keep surface damp with the Woodclean solution for 20 minutes, allowing the solution to penetrate the surface during this time.  After 20 minutes has elapsed rinse thoroughly with high - pressure water. 

Allow the surface to dry completely before applying further products.

Note: Protect nearby paint, plants and other surfaces with plastic sheeting or wet first and rinse immediately after. Woodclean may cause erosion of some timber sealants and fillers, test surface prior to application.

  • Where to useAll exterior timber
  • Coverage m2/L20
  • Mix ratio: (optional)Dilute 1 part Woodclean to 4 parts water
  • Number of coats1
  • Top coat (optional)When thoroughly dry
  • Recoat time20 minutes
  • Clean upWater
  • Sizes available1L, 4L