Yes, many factories can apply special treatments to outdoor furniture to significantly enhance its mildew resistance. This is a common and valuable service, especially for furniture destined for humid or coastal climates. The process typically involves pre-treatment of materials and the application of specialized protective coatings.

For synthetic materials like resin wicker or plastics, inherent mildew resistance is often built-in. However, factories can apply anti-microbial additives during the manufacturing process to provide an extra layer of protection. For natural materials like wood, treatments are more intensive. Factories may use pressure-treated wood, where preservatives are forced deep into the wood fibers, or apply penetrating oil-based sealants that repel moisture—the primary cause of mildew growth.

The most effective factory-applied treatment is often a high-performance, UV-resistant protective finish or topcoat. These advanced coatings are designed to create a robust barrier that prevents moisture penetration while allowing the material to breathe. Some factories offer proprietary weatherproofing solutions that combine water repellency with mildewcides, actively inhibiting fungal growth. It's crucial to inquire with the specific manufacturer about their available treatment options, recommended reapplication schedules, and any warranties associated with these finishes to ensure long-term protection for your outdoor investment.