How to add drainage to a deck that is already built – decking experts reveal how to do it without ripping up all the boards

A rainy wooden deck and railings .

A deck is always a good addition to the yard, creating a low-maintenance outdoor space that's perfect for hosting and relaxing.

However, poor deck drainage can be a real problem. Water can rot the wood and destroy the deck. If your deck was installed incorrectly and you have to add drainage yourself, this could mean removing all the boards, or even the frame.