General timeline
Most wood decks need resealing every 1 to 3 years, depending on the type of wood, the finish used, sun exposure, and your climate. Composite decking generally doesn't need sealing at all — check your specific product's care guidance if you're not sure what you have.
The water test
Pour a small amount of water on the deck surface. If it beads up, the existing seal is still doing its job. If it soaks in within a minute or two, it's time to reseal — this is a more reliable indicator than going by a calendar alone.
Visible signs it's overdue
- Wood looks gray or faded rather than its natural or stained color
- Boards feel rough or are starting to splinter
- Visible cracking or checking (small splits) along the grain
- Water spots or dark staining that don't fade after drying
Why it's worth staying ahead of
Once water penetrates unsealed wood repeatedly, it accelerates rot, especially at board ends and fastener locations. Catching it at the "starting to fade" stage is a weekend project; catching it after rot has set in usually means replacing boards, not just resealing them.
Keep exterior maintenance on a real schedule
Hiveix reminds you before small issues become expensive ones.