HOW TO USE IT
How to use the Deck Sealing Cost Calculator
- 1
Measure the wood deck area in square feet.
- 2
Enter the sealer price per sq ft (product).
- 3
Add labor per sq ft and review the total.
THE MATH
Deck sealing formula
Total cost = area × (sealer + labor)Deck sealing is priced per square foot and includes the sealer (stain or water-repellent) plus labor: cleaning, sanding and application.
PRACTICAL EXAMPLE
A 300 sq ft deck
300 sq ft × ($0.50/sq ft sealer + $1.50/sq ft labor) = $600.
FAQ
Frequently asked questions
Sealer or stain?
Sealer protects against water and UV with a clear or light tint; stain adds color and protection. For old, gray decks, a tinted sealer restores color.
How often?
Seal a new deck promptly, then every 1-3 years depending on exposure. A quick water test (beading vs soaking) tells you when it's due.
Do I need to clean first?
Yes — power wash and let dry 24-48 hours. Light sanding improves adhesion on weathered wood.