A beautiful deck adds value to your home, but over time, exposure to the elements can leave it looking worn and weathered. If your deck has seen better days, refinishing it can bring back its charm. Whether you need to refinish a wood deck or one that has been painted, we’ll walk you through the process in detail.
Why Refinish Your Deck?
Your deck is exposed to sun, rain, and foot traffic daily. Without regular maintenance, it can deteriorate, leading to costly repairs or even replacement. Here’s why refinishing your deck is essential:
- Extends the Life of Your Deck – Proper maintenance prevents rot, warping, and cracking, saving you money in the long run.
- Enhances Appearance – A fresh finish restores the deck’s natural beauty, making it an inviting space for relaxation or entertaining.
- Protects Against Weather Damage – Stains and sealants help repel water, prevent mold, and protect against UV damage.
Increases Home Value – A well-maintained deck boosts curb appeal and resale value.
Step 1: Inspect Your Deck
Before you begin, take time to inspect your deck for signs of damage. Look for:
- Loose, warped, or rotting boards
- Protruding nails or screws
- Mold, mildew, or algae buildup
- Old paint or stain that is peeling or chipping
Use a screwdriver to check for soft spots in the wood—this can indicate rot. If you find severely damaged boards, replace them before refinishing. Tighten loose screws or replace protruding nails with deck screws to ensure a secure surface.
Step 2: Clean the Deck Thoroughly
A clean deck ensures that the new finish adheres properly. Follow these steps to remove dirt, mildew, and old coatings:
- Sweep Away Debris: Use a broom to remove leaves, dirt, and loose particles.
- Apply a Deck Cleaner: Choose a commercial deck cleaner or make your own with oxygen bleach and water. Scrub with a stiff-bristle brush to remove grime.
- Use a Pressure Washer (Optional): If your deck has heavy buildup, a pressure washer can help lift stubborn dirt. Use a low setting (1,200–1,500 PSI) to prevent wood damage.
- Rinse and Let Dry: After cleaning, rinse the deck thoroughly with water and let it dry completely for 24–48 hours before proceeding.
Step 3: Remove Old Paint or Stain
If your deck was previously stained or painted, you need to remove the old coating for the new finish to adhere properly.
- For a Painted Deck: Use a paint stripper to loosen old layers. Scrape off any peeling or flaking areas with a paint scraper.
- For a Stained Deck: Apply a stain remover and scrub the surface. A power sander can help remove any stubborn areas.
For Deep Stains: If stains have soaked into the wood, sanding may be necessary to reveal fresh wood underneath.
Step 4: Sand the Deck
Sanding smooths the surface, removes splinters, and prepares the deck for staining or painting.
- Use 60-80 grit sandpaper for rough or weathered decks.
- For previously painted decks, use 40-60 grit sandpaper to remove old coatings effectively.
- Always sand in the direction of the wood grain to prevent scratches.
- Sweep or vacuum thoroughly to remove dust before applying the new finish.
Step 5: Choose the Right Finish
Now comes the fun part—choosing a finish for your deck! Consider the following options:
Stain vs. Paint: Which is Better?
Feature | Stain | Paint |
Appearance | Enhances natural wood grain | Provides solid color |
Durability | Wears off gradually | Can peel or chip |
Maintenance | Easier to reapply | Requires scraping and repainting |
Water Resistance | Protects wood, repels water | Can trap moisture if applied incorrectly |
- Transparent or Semi-Transparent Stain: Best for showcasing wood grain.
- Solid Stain: Provides color while still revealing some texture.
Deck Paint: Great for covering imperfections but may peel over time.
Step 6: Apply the Finish
For a Stained Deck:
- Stir the stain thoroughly before applying.
- Use a paintbrush, roller, or sprayer to apply in long, even strokes.
- Work in small sections to prevent lap marks.
- Allow the stain to dry as per manufacturer instructions before using the deck.
For a Painted Deck:
- If switching from stain to paint, use an exterior wood primer first.
- Apply the first coat with a brush or roller.
- Let it dry completely before applying a second coat for even coverage.
- Ensure the paint is rated for outdoor use to withstand weather conditions.
Step 7: Seal and Protect
Sealing your deck is crucial, especially if you opted for a stain instead of paint.
- Use a waterproof sealant designed for decks.
- Apply a thin, even coat with a brush or roller.
- Let it dry completely before walking on the deck.
Reapply every 1–3 years to maintain its durability.
Step 8: Maintain Your Deck
To keep your deck looking great year-round, follow these maintenance tips:
- Sweep and wash regularly to remove dirt and debris.
- Avoid heavy furniture dragging to prevent scratches.
- Reapply stain or sealant as needed—every 1–3 years.
Inspect for damage and make minor repairs before they become major issues.
Common Mistakes to Avoid When Refinishing a Deck
- Skipping the Cleaning Step: Dirt and old coatings prevent new finishes from adhering properly.
- Not Letting the Deck Dry Fully: Moisture can cause stains or paint to peel prematurely.
- Applying Too Thick of a Coat: This leads to uneven drying and a sticky surface.
Skipping the Sealant: If you stain your deck but don’t seal it, it won’t last as long.
When to Hire a Professional
If your deck is severely damaged, has structural issues, or if you’re unsure about refinishing it yourself, it may be best to hire professionals. Experts can ensure the job is done correctly and efficiently.
Can you refinish a deck yourself?
Yes, refinishing a deck is a DIY-friendly project if you have the right tools and time. The process involves cleaning, stripping old paint or stain, sanding, and applying a new finish. While it requires effort, most homeowners can complete the job in a weekend. However, if your deck has extensive damage or you want a professional-grade finish, hiring an expert may be a better choice.
Is it better to sand or power wash a deck?
Both methods have their benefits:
Sanding smooths rough surfaces, removes splinters, and helps stain adhere evenly. It’s best for decks with old stains or paint that need complete removal.
Power washing is quicker and effective for removing dirt, mildew, and light layers of old stain. However, using too much pressure can damage wood fibers, leading to a rough surface that requires sanding afterward. For best results, consider using a power washer to clean the deck, followed by sanding to ensure a smooth finish before refinishing.
How much should it cost to refinish a deck?
The cost to refinish a deck depends on its size, condition, and whether you do it yourself or hire a professional:
DIY refinishing: $100 – $300 for cleaning supplies, stain or paint, and tools.
Professional refinishing: $2 – $5 per square foot, totaling $500 – $2,500 for an average-sized deck. If your deck requires repairs or multiple coats of finish, costs may be higher.
How much should a 20x20 deck cost?
The cost of a 20×20 deck depends on the materials and whether it’s a new build or refinishing:
New deck construction:
Pressure-treated wood: $8,000 – $12,000
Composite decking: $12,000 – $22,000
Premium hardwoods: $15,000 – $30,000
Refinishing an existing 20×20 deck:
DIY: $200 – $500
Professional refinishing: $800 – $2,000
Refinish Your Deck Today!
Refinishing a deck can transform your outdoor space, making it a beautiful and functional area for years to come. Whether you’re tackling a wood deck or refinishing one that has been painted, following these steps will ensure a successful project.
Need professional help? Contact LTC Construction at (253) 461-0750 today!
