The frequency with which you need to re-stain or treat your wooden outdoor furniture depends on several key factors. Generally, most outdoor wood furniture requires re-staining or re-sealing every 1 to 3 years, but this timeline can vary significantly.
The type of wood is a primary consideration. Dense, naturally rot-resistant woods like teak, cedar, or redwood may only need treatment every 2 to 3 years, or even longer. Softer woods like pine require more frequent attention, often annually.
Your local climate plays a huge role. Furniture exposed to intense, direct sunlight, heavy rain, snow, or high humidity will break down faster. In harsh, four-season climates, you'll likely need to re-stain more often than in mild, temperate regions.
The quality of the previous stain or sealant is also crucial. A high-quality, penetrating oil-based stain typically lasts longer than a thin, water-based product. Transparent stains offer less UV protection and may need reapplication sooner than semi-transparent or solid-color stains.
To determine if it's time, perform a simple water test. Sprinkle a few drops of water on the wood surface. If the water beads up, the finish is still protecting the wood. If the water soaks in and darkens the wood, it's time for a new coat of stain or sealant. Regular cleaning and storing furniture under cover during harsh weather can help extend the time between treatments.