Renew It! Deck Cleaner


White Knight Renew It! Deck Cleaner easily and effectively aids the removal of oils, mould, stains and tannins from new and weathered timber.

Ideal for surface preparation using White Knight Renew It! Wood & Concrete Resurfacer.

  • Aids the removal of oils, mould, stains and tannins from new and weathered timber
  • Powerful, oxalic preparation treatment
  • Ideal for rejuvenating grey, weathered timber
  • Suitable for restoring decking, outdoor furniture, fences, pergolas and other exterior woodwork

Suitable Surfaces

White Knight Renew It! Deck Cleanser is suitable for use on timber.


  • Corrosive: Avoid contact with skin.
  • Avoid breathing dust, vapour, or spray mist.

Safety & First Aid

  • If swallowed seek medical advice immediately and show the container or label. Do NOT induce vomiting.
  • If on skin wash skin thoroughly with soap and water or use recognised skin cleanser. Do not use solvents or thinners.
  • If in eyes immediately flush with running water for at least 15 minutes. Seek immediate medical attention.

For 24 hour medical emergency response in Australia call 1800 883 254 and in New Zealand call 0800 000 096


  • Do not pour unwanted deck cleaner down the drain.
  • Keep unwanted deck cleaner in sealed containers for disposal via chemical waste collections.

How To Video

Rescue your old deck with White Knight Renew It!


  • 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.
  • To achieve best results, apply to cool surfaces out of direct sunlight to avoid the cleaner drying on the timber prior to removal.
  • To achieve a uniform result it is recommended that entire sections be cleaned at one time.
  • Sweep surface clean and thoroughly wet down with water.
  • Shake White Knight Renew It! Deck Cleaner thoroughly and mix in a separate plastic container. For general cleaning dilute one part White Knight Renew It Deck Cleaner with 5 parts water. For severe staining or discolouration a second application or stronger solution may be required.
  • White Knight Renew It Deck Cleaner is mildly acidic, protect nearby paint, plants and other surfaces with plastic sheeting or wet first and rinse immediately after.


  • Apply diluted White Knight Renew It! Deck Cleaner generously to dampened timber and scrub surface vigorously with a stiff bristle brush or broom.
  • Leave mixture on timber for 15 minutes.
  • Rinse off exterior surfaces thoroughly using a garden hose. Clean interior surfaces with a sponge and water.
  • Allow the surface to dry completely before applying additional products.


Approximately 6-8m² per litre when diluted. Coverage will be lower on rough or absorbent surfaces.

Clean up

Clean brushes and equipment with water immediately after use.