Seal or Stain Wood Deck
Apply a water-repellent sealer or stain to protect wood decking from moisture and UV damage.
DIY Cost
$120
If Ignored
$5k
Frequency
Twice a year
Difficulty
Moderate DIY
Some experience helpful. Plan 2–4 hours and watch a tutorial first.
How to do it — step by step
Clean the deck thoroughly and let it dry 2–3 days. Test if sealer is needed: sprinkle water on the boards — if it soaks in, it's time to seal. Apply a UV-resistant exterior deck stain or sealer with a brush or roller. Work in sections on a cool, cloudy day to prevent lap marks. Proper sealing prevents moisture penetration, cracking, and graying. An unsealed deck can deteriorate in as few as 3–5 years in wet climates.
Recommended tools & supplies
As an Amazon Associate, HouseWell earns from qualifying purchases.
Never miss a maintenance task again
HouseWell builds a personalized calendar of every task that applies to your home — based on your home type, systems, and climate zone.
Start Free 14-Day TrialNo credit card required · Cancel anytime