Plan a surface refresh for a deck that is already safe and structurally sound. Cleaning and coating do not repair failed framing, connections, guards, or rot. Use the relevant calculator to estimate purchases, review the assumptions, then add the result to your project materials list.
IS THIS A GOOD FIT FOR YOU?
Some Experience
1Easy DIY
2Some Experience — this project
3Advanced DIY
4Hire a Pro
Why this rating: Cleaning and recoating sound boards is approachable but depends on preparation and weather.
Applies to: An existing structurally sound deck; surface cleaning and finish only.
Get help when: Close off loose, soft, sagging, or unstable areas and arrange a qualified structural inspection before cosmetic work.
A planning guide, not a safety certification. Conditions at your home can change the difficulty. Ratings are independent of contractor relationships.
TimeA weekend plus weather and drying
CostUse actual local product prices
PermitsCheck if scope changes
Permits & safety: Close off loose, soft, sagging, or unstable areas and arrange a qualified structural inspection before cosmetic work.
Plan the whole project as you go. Add each calculator result to a named project, then edit quantities and supplier prices, check off purchases and stages, and export CSV, print/PDF, or JSON.
1Inspect before cosmetic work
Look for soft boards, loose guards, movement, sagging, and suspect connections. Keep people off unsafe areas and arrange qualified inspection. Do not coat over decay or treat this surface guide as a structural assessment.
2Choose a compatible finish system
Identify the decking material and old coating. Check the new product’s suitability, preparation, coverage, weather limits, and drying instructions. Composite products may require different care; do not assume wood stain is suitable.
3Measure what you will coat
Measure the walking surface and separately account for rails, steps, and vertical faces if coating them. Check what the calculator includes and adjust to the actual product coverage.
Stain to buy
2 gal
Deck area
192 sq ft
Stain (2 coats)
1.5 gallonsbuy 2 gal
Coverage
250 sq ft / gallonper coat on bare decking
Stain cost (est.)
$70~$35/gal
Planning estimate. Adjust allowances and sample prices for your supplier; tax, delivery, and labor are not included.
4Clean, test, and allow to dry
Protect nearby plants and follow cleaner directions and local disposal rules. Test a small inconspicuous area. Aggressive washing can damage boards; follow decking and coating manufacturers’ methods.
5Coat in the right weather window
Confirm dryness and the forecast meet the product instructions. Maintain a wet edge, avoid overapplication, and keep the deck closed until ready for use. Handle oily rags and waste exactly as the product label directs.
No. Determine the extent and cause of decay and have structural defects addressed before refinishing.
Can I build a deck next?
Deck construction is a separate Advanced DIY project with footings, connections, guards, permits, and inspection requirements. Use an approved design and qualified help where needed.
