Ronseal have a great product called Decking Rescue Paint fills in small cracks and covers grey wood, making your deck look as good as new. A good clean and a couple coats of paint is all it takes to give your deck a new look. Decking Rescue Paint leaves your decking with long lasting colour and protection.
Smooths rough surfaces
Fills cracks and locks down splinters
Long lasting colour protection
Covers grey wood
10 colours available .....check your supplier . The video below shows a white dech i was going to use the product but could only get the product in dark grey.