The frequency for re-treating or resealing teak urban outdoor furniture depends primarily on the type of finish used and your local climate. There is no universal timeline.
For teak left untreated to weather naturally to a silvery-gray patina, no resealing is ever required. The process is purely aesthetic.
If you apply a teak sealer or protector, which aims to maintain the original honey-brown color, expect to reapply it every 3 to 6 months during the season of use. These products are water-based and wear away relatively quickly with sun and rain exposure.
For a teak oil finish, reapplication is typically needed 1 to 2 times per year. Oil penetrates the wood but can dry out, leading to a faded or thirsty look. It often requires more frequent upkeep than sealers.
A heavy-duty exterior wood sealant or varnish can last 1 to 2 years before needing sanding and reapplication. However, once this film finish cracks or peels, extensive refinishing is required.
Key factors influencing frequency:
* Climate: Harsh sun, high humidity, and heavy rain accelerate wear.
* Furniture Exposure: Full sun and rain require more care than sheltered placements.
* Signs It's Time: Look for water no longer beading on the surface, color fading to gray, or the wood feeling dry and rough.
Best Practice: Inspect your furniture at the start of each season. Clean it thoroughly with a teak cleaner before any reapplication to ensure the new treatment bonds properly. Consistent, light maintenance is easier than major restorative projects.