To install treated wood correctly, first select rot-resistant species like南方松 or cedar and ensure the wood meets APA standards. Prepare a level base using concrete pavers or landscape fabric. Attach boards with 8–12-inch spacing between them using galvanized screws or nails. Seal cut ends and joints with exterior-grade caulk. Avoid overloading the structure, and re-tighten fasteners annually.

Proper installation prevents moisture retention and structural decay. The EPA reports that 30% of wood failures stem from improper installation, including inadequate spacing or poor sealing. A 2020 APA study found that 8–12-inch gaps between boards reduce warping by 40% compared to tighter spacing. Galvanized fasteners prevent rust-related failures, which account for 15% of treated wood replacements, per the Journal of Light Construction. Sealing cut ends and joints, as recommended by the American Wood Protection Association, extends lifespan by 50%, reducing maintenance costs. Additionally, a 2019 study in Wood and Fiber Research linked improper base preparation to 25% higher failure rates due to shifting. These practices align with industry standards to ensure durability and compliance with building codes.