How to clean composite decking. Firstly
Do not use a powerhose on your composite
decking, as the fine nozzel creates alot of
pressureat the end of the water jet.Where the jet of
water engages the decking board lines will be created
and tracked across your expensive composite deck if you use a
powerhose. We
have used various methods for cleaning eight and nine year old
composite decking boards. One product that worked very well for us
is called cortaclean. Cortaclean crystals are disolved
into a basin of hotwater then applied to the deck, the solution is
left for approx 10mins then scrub the deck with a deck scrubber for
approx 4 or 5 more minutes. It is very important that you wash the
deck immediately afterwards with plenty of water; a hose is best
for this. We
found that we got exactly the same effect
when we used soda crystals dissolved in hot water.
You need to be careful that you don't leave the solution on the
deck very long, scrub the deck well and wash
off with plenty of water. If you don't rinse the
deck off immediatley the solution will lighten the colour of your
deck. We suggest that you experiment first on
a part of the deck that is well out of sight untill you master your
technique and solution concentration: How to clean composite
decking.