Slippy Decking.

Often softwood decking can become slippy due to a of a build up a layer of algae and litchens which become slippy in wet conditions.These are in effect small micro plants feeding on the build up of humids and nutrients on the decking over a period of time.The best course of action is to apply jeyes fluid or decking cleaner available from a builders merchant to the area with a watering can then leave for 3 weeks then pressure wash the area.The jeyes fluid or decking cleaner will kill the moss and lichens making them easier to remove.
Then apply a decking cleaner to the decking every 8 weeks to stop the regrow of the algae and litchens.