Diatoms, a type of algae, can quickly colonize outdoor seating, leaving unsightly stains and slippery surfaces. Preventing their growth requires a combination of regular maintenance and proactive measures. Here are the most effective strategies:

1. Regular Cleaning: Wash outdoor furniture weekly with a mixture of mild soap and water. For stubborn diatom buildup, use a soft brush or sponge to scrub the surface gently.

2. Protective Coatings: Apply a water-repellent or anti-algae sealant to create a barrier against moisture, which diatoms thrive in. Reapply every few months for optimal protection.

3. Proper Storage: When not in use, cover seating with breathable, UV-resistant furniture covers or store it in a dry, shaded area to minimize exposure to damp conditions.

4. Natural Remedies: Spray a solution of white vinegar or hydrogen peroxide on affected areas to kill diatoms without harsh chemicals. Rinse thoroughly afterward.

5. Improve Airflow: Arrange seating to allow adequate airflow and sunlight, as diatoms prefer stagnant, shaded environments.

By following these steps, you can keep your outdoor seating diatom-free and prolong its lifespan. Consistency is key—regular care ensures long-term results.