Calculate exactly how many gallons of deck stain, paint, or sealer you need. Get instant estimates for material costs and labor.
Total Surface Area
332 sq ft
Deck: 240 sq ft + Railings: 80 sq ft + Stairs: 12 sq ft
Stain Needed
4 gallons
Based on 200 sq ft coverage per gallon × 2 coats
Estimated Material Cost
$140 – $240
$35-$60 per gallon range
Estimated Labor Cost
$830 – $1,494
$2.5-$4.5 per sq ft professional rate
Total Project Estimate
$970 – $1,734
Materials + Labor (DIY saves on labor costs!)
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Common questions about deck staining and coverage
For a 200 sq ft deck with two coats, you'll need approximately 2-3 gallons of deck stain. The exact amount depends on your deck's condition—new wood absorbs less stain than weathered or porous wood. Use our calculator above for a precise estimate based on your specific deck.
One gallon of deck stain typically covers 200-300 square feet per coat, depending on the wood's condition and porosity. New, smooth wood gets better coverage (250-300 sq ft), while weathered or rough wood absorbs more stain (150-200 sq ft). Semi-transparent stains generally cover more than solid stains.
Two coats is recommended for most deck staining projects, especially for optimal protection and color depth. One coat may be sufficient for maintenance coats on previously stained decks in good condition. Always wait for the first coat to dry completely (typically 24-48 hours) before applying the second coat.
Deck stain penetrates the wood to protect from within while showing the grain. Deck paint forms a film on the surface, offering the most UV protection but can peel over time. Deck sealer provides water protection with minimal color change—ideal for new wood you want to keep looking natural. Stain offers the best balance of protection and appearance for most decks.
Perform the water test: sprinkle water on your deck. If it beads up, your deck is still protected. If it soaks in within 10 seconds, it's time to restain. Other signs include fading color, gray weathering, splintering wood, or visible wear patterns. Most decks need restaining every 2-3 years.
Yes, proper prep is crucial for a lasting finish. Clean the deck with a deck cleaner or pressure washer to remove dirt, mildew, and old finish. Sand rough spots and splinters. For previously stained decks, you may need to strip the old stain. Allow the deck to dry completely (48-72 hours) before applying new stain.