How to Waterproof a Plywood Deck
- 1). Sweep the deck off using a broom to remove all leaves, dirt and debris. Cover all nearby desirable grasses, flowers and shrubs to prevent them from damage.
- 2). Fill a bucket with 1 gallon of water and a general household cleaner using the amount specified on the bottle. Insert a long-handled scrub brush into the mixture and clean the entire plywood deck by scrubbing it vigorously. Rinse the plywood off with a garden hose to remove all cleaning residue. Allow the plywood deck to dry overnight until no moisture remains.
- 3). Open a can of wood waterproofing liquid and pour some into a paint tray. Insert a paint roller with a long-handled extension into the liquid until it is saturated.
- 4). Roll the waterproofing liquid onto the plywood deck in long, even strokes until you've covered and sealed the entire deck.
- 5). Allow the sealer to dry for at least 24 hours, longer if specified on the bottle, before walking on it.
