This post was updated on February 26, 2024
Best deck stain to prevent mildew?
The best type of deck stain to prevent mildew is a water-based deck stain. The best water-based deck stain to prevent mildew is Restore-A-Deck. Some oil-based deck stains have added mildewcide, but not all. Check the label of the brand and color you want to make sure it is appropriate for a wetter climate. The best oil-based deck stains with mildewcide are TWP and Armstrong Clark semi-transparent penetrating deck stains. A deck with existing mildew must be thoroughly cleaned before applying new deck stain in a moist environment.
How to Prevent Mildew on Deck Stains
Pro Tip: The RAD Guard will remove the black mildew and green algae stains from your wood and deck stains and will prevent them from returning for 1-2 years: RAD Guard Mildew and Algae Cleaner and Preventer
More information on coping with mildew on decks in a wet climate
- Mold and Mildew on Wood Decks
- Black Mold and Deck Stains
- How to Remove Mold and Algae From Decks
- Restore-A-Deck Wood Stain Review