How to Remove Mildew From Decking

Deck Floor

Mildew and mold on decks can weaken wood and creates a place for wood rot to develop. If you do not use water sealant on wood after building, rain or other weather conditions can trigger mildew. When the first signs of mildew occur, you can still save your decking. Use a product that is safe on wood surfaces. These include Deckbrite Wood Cleaner, EcoDiscoveries Moldxyme Spray Cleaner or SuperDeck Wood Cleaner. They are available at most home improvement stores.

Things You'll Need

• Mildew wood cleaner
• Plastic spray bottle
• Rubber Squeegee or cloth
• Hose

Instructions

1. Read the directions on the wood cleaning product. Some allow you to spray or pour on. Others may need to dilute in water. It is important to understand the instructions and warnings so you do not ruin the decking material.

2. Determine the mildew damage. If you have a small area of mildew, you can use a rag and a plastic spray bottle to clean the area. However, if half of the decking needs treatment, use a rubber squeegee and pour the solution onto the decking.

3. Clean the decking material. For the smaller area, use the rag in a circular motion over the mildew area. For a larger area, use the rubber squeegee to rub the cleaning solution into the decking. Use a back and forth motion over the mildewed area. With either method, scrub fiercely and add more cleaning solution when necessary.

4. Use the hose to spray off the decking. Remove all the cleaning solution. Repeat Step 3 if the mildew persists.

Tips & Warnings

• After removing the mildew, protect your wood. Use a wood weather sealant such as PolySoy Gloss Topcoat.

Resources

• Read this Article in Spanish