Can I prevent my deck from becoming slippery?

Yes. The surface of the deck needs to be kept clean and clear of mildew and algal growth. The Timber Decking and Cladding Association provides guidance on how and when to clean you deck on the Deck Maintenance page. Anti-slip decking products can also be fitted retrospectively, the TDCA can help you locate suitable suppliers. Decking products are available with anti-slip inclusions, which would avoid the problem.