Deck Preparation
Before washing, ensure your deck is ready for cleaning. Proper preparation is key to achieving the best results and protecting your surrounding landscape.
- Clear the Deck: Remove all furniture, planters, grills, and any other items from the deck surface.
- Sweep Thoroughly: Use a stiff broom to sweep away loose debris, leaves, dirt, and cobwebs. Pay attention to corners and between deck boards.
- Protect Surroundings: Cover nearby plants, shrubs, and grass with plastic sheeting or tarps to shield them from cleaning solutions, especially if using stronger agents. Wetting down plants with plain water beforehand can also offer some protection.
- Inspect the Deck: Check for any loose or protruding nails or screws, splinters, or damaged boards. Address these issues before washing to prevent injury or further damage.
Choosing Your DIY Deck Cleaner
Several effective DIY deck wash solutions can be made with common household ingredients. Always test any cleaner on an inconspicuous area of the deck first.
- For General Cleaning (Wood & Composite): Mix 1/4 cup of mild dish soap (without degreasers or harsh chemicals) into 1 gallon of warm water. This is suitable for light dirt and grime.
- For Mold and Mildew (Wood Decks): Mix 1 cup of oxygen bleach powder with 1 gallon of hot water. Stir until dissolved. Oxygen bleach is less harsh on wood and plants than chlorine bleach and effectively kills mold and mildew. Avoid chlorine bleach as it can damage wood fibers and discolor the wood.
- For Stubborn Stains (Wood Decks): A paste made from oxygen bleach and a small amount of water can be applied directly to tough stains. Let it sit for 10-15 minutes before scrubbing.
Application and Scrubbing
Proper application and scrubbing are crucial for lifting dirt and contaminants.
Tools Needed:
- Garden hose with spray nozzle
- Pump sprayer (optional, for even application of cleaner)
- Stiff-bristled deck brush (long-handled is recommended)
- Bucket
- Protective eyewear and gloves
Steps:
- Wet the Deck: Lightly spray the entire deck surface with plain water. This helps the cleaner spread evenly and prevents it from drying too quickly.
- Apply the Cleaner: Working in manageable sections (e.g., 10x10 feet), apply your chosen DIY cleaning solution. You can use a pump sprayer for even coverage or apply it directly from a bucket using the deck brush.
- Let it Dwell: Allow the cleaner to sit on the surface for 5-15 minutes, depending on the solution and the level of dirt. Do not let the cleaner dry on the deck. Keep the surface damp if necessary by lightly misting with water.
- Scrub: Use the stiff-bristled deck brush to scrub the deck boards. Scrub in the direction of the wood grain. Apply firm pressure to lift embedded dirt, mold, and mildew.
Rinsing and Drying
Thorough rinsing is essential to remove all cleaning solution residue and dislodged grime.
- Rinse Thoroughly: Using a garden hose with a good spray nozzle, rinse the section you've cleaned. Start from the highest point and work your way down. Ensure all soap and debris are washed away. Overlap rinsed areas to avoid streaks.
- Pressure Washer (Optional): If using a pressure washer, use a low-pressure setting (600-800 PSI for softwoods like pine or cedar, up to 1200 PSI for hardwoods) and a fan-tip nozzle. Keep the nozzle moving and maintain a consistent distance of at least 12 inches from the wood surface to prevent damage or gouging. Always spray with the grain of the wood.
- Final Rinse: Give the entire deck one final rinse to ensure no residue remains.
- Allow to Dry: Let the deck dry completely, which may take 24-48 hours depending on weather conditions. Avoid walking on it until fully dry.
Once your deck is clean and dry, consider applying a sealer or stain to protect it from the elements and extend its lifespan.
