White rot fungus poses a significant threat to wooden park chairs, breaking down lignin and cellulose and compromising structural integrity. The most effective prevention strategy combines proper material selection, chemical treatments, and regular maintenance. For existing wooden chairs, copper-based preservatives like alkaline copper quaternary (ACQ) or copper azole provide excellent protection against fungal decay. These compounds penetrate deep into the wood fibers, creating a hostile environment for white rot fungi while being relatively environmentally friendly.

For new installations, choosing naturally decay-resistant wood species such as cedar, redwood, or pressure-treated lumber significantly reduces vulnerability to white rot. Modern pressure-treated wood undergoes a process that forces preservatives deep into the wood cell structure, providing long-lasting protection even in damp conditions. Regular maintenance including cleaning debris from chair surfaces, ensuring proper drainage, and applying water-repellent finishes every 2-3 years dramatically extends furniture lifespan.

Innovative solutions like thermally modified wood, where high temperatures alter wood's chemical structure to make it less appetizing to fungi, offer chemical-free alternatives. For severe cases, epoxy consolidants can stabilize already affected wood while preventing further deterioration. Combining these approaches creates comprehensive protection that can extend the life of park chairs by 10-15 years, ensuring public furniture remains safe, functional, and aesthetically pleasing despite constant exposure to moisture and organic matter that promote white rot development.