Preparation is so important here , the cleaner the deck the longer your stain will last . Start by brushing the deck to get rid any dirt , use a good hard bristle deck scrubbing brush . Then wet the deck with a hose or power washer and apply a decking cleaner – I would use ether Farbex Multi – Surface Cleaner or Deck Brite Cleaner . Scrub these in with your deck brush and hose down afterwards ( Do not leave ether of these products dry out ) . When you are happy that your deck is clean enough , allow to dry out fully ( 2 – 3 days ) . Then coat with ether Sikkens HLS ( Oil Based ) or Colortrend Transparent Woodstain ( Acrylic Based ), apply 2 – 3 coats of ether of these and sit back and enjoy the summer .