The frequency for re-staining or treating wooden urban outdoor furniture typically ranges from every 1 to 3 years. However, this is not a fixed rule. Several key factors determine the exact timeline. First, the climate is a major influence. Furniture in areas with intense sun, heavy rain, or high humidity will degrade faster and require more frequent care—often annually. The type of wood also matters. Dense hardwoods like teak or ipe may last 2-3 years between treatments, while softer woods like pine might need attention every year. The quality and type of the previous stain or sealant play a role too; higher quality, penetrating oil-based stains generally offer longer protection than thin, water-based finishes.
Most importantly, you should let the wood itself tell you when it's time. Regular inspections are crucial. Clear signs that your furniture needs re-treatment include: the wood appearing dry, faded, or gray; water no longer beading up on the surface but instead soaking in immediately; and visible cracks or a rough texture. For urban settings, where furniture faces pollution and frequent use in addition to weather, a proactive annual check is wise. To maximize the time between treatments, start with a thorough sanding to remove old finish, ensure the wood is completely clean and dry before applying a new coat, and use a high-quality stain or sealant designed for exterior use. Consistent maintenance not only preserves the beauty of your furniture but also significantly extends its lifespan against the harsh elements of city life.