How To: Treat Decking

What you will need

  • Decking Oil or Decking Stain
  • Deck Pad or Roller
  • Deck cleaner
  • Scrubbing brush (if required)


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  • 1 Decking timber should be free from dust, dirt, mildew, algae and other contaminants. Remove debris and accumulations using a stiff brush. Then use a suitable deck cleaner.
  • 2 Decking cleaners are specially formulated to clean and revive weathered or tired timber decking. They remove moss, mould and algae whilst also restoring it back to it’s natural appearance. Pour decking cleaner directly on to your deck.
  • 3 Scrub the surface immediately using a stiff brush then leave for 15-20 minutes before hosing down. Alternatively wash off thoroughly with a pressure washer. Work from one end of a decking board to the other in a continious motion. Top tip: Decking Oil comes in Clear and Colour. It will enhance the natural beauty of decking whilst protecting it from the harmful UV rays and preventing mould and fungal growth. Decking Stain will colour, protect and waterproof. The finish is scuff resistant, hardwearing and highly water repellent.
  • 4 On this occasion I am using a Decking Oil. This one actually comes with a handy applicator. But it can be applied with a brush or roller.Stir the decking oil thoroughly before application.
  • 5 Dip the pad into the oil ensuring the underside of the pad is immersed. Dip the pad evenly and make sure you do not overload it.
  • 6 Starting in the furthest corner, push or pull the pad in the direction of the woodgrain.
  • 7 Apply the oil in long, smooth strokes treating 3-4 boards at a time to avoid overlap marks.
  • 8 Most decks will require at least two coats. Refer to manufacturer’s instructions to find out the required drying time between coats.