Maintaining a cedar deck helps preserve its natural beauty and longevity. Regular cleaning removes dirt, mildew, and algae that can dull the wood’s color and lead to premature wear. This guide provides practical, easy-to-follow steps using common cedar deck cleaners and tools, tailored for American homeowners who want a clean, vibrant cedar surface without damaging the wood.
By following these steps, homeowners can refresh cedar boards, brighten pale hues, and prepare the surface for sealing or staining. The approach emphasizes safety, efficiency, and the right combinations of cleaners and scrub gear to avoid staining or wood damage.
Quick Answer
Use a cedar deck cleaner concentrate for pressure washers or a cedar deck brightener for a spray application to lift stains, followed by a scrub with a cedar wood scrubbing brush. Rinse thoroughly with a power washer deck cleaning attachment on a low setting, then dry completely before applying a stain remover kit if needed.
What You’ll Need
- cedar deck cleaner concentrate for pressure washer
- cedar deck brightener wood cleaner spray
- deck cleaning brush set cedar wood scrubbing brush
- power washer deck cleaning attachment cedar
- cedar deck stain remover and cleaner kit
Before You Start
Before cleaning, inspect the deck for loose boards, protruding nails, and damaged areas. Protect nearby plants and shrubs, and cover them if needed. Test a small, inconspicuous area to confirm color safety and bleaching effects. Plan for a dry, mild-weather day to allow adequate drying time, typically 24–48 hours depending on climate. Never mix cleaners with bleach or ammonia and wear eye protection and gloves during application to prevent skin and eye irritation.
Step-By-Step: How To Clean A Cedar Deck
- Clear the deck and sweep away all debris to expose cleaning targets and avoid trapping grit during scrubbing.
- Prepare the cleaner according to the product label, using a cedar deck cleaner concentrate for pressure washers for larger areas or a cedar deck brightener for spray applications on smaller sections.
- Apply the cleaner evenly, starting from the farthest corner and working toward the exit to prevent re-soiling. Allow the product to dwell as recommended, typically 5–15 minutes.
- Use a cedar wood scrubbing brush to agitate the surface in a consistent, circular motion, focusing on discolored planks and joints where mildew accumulates.
- For stubborn stains, reapply the cleaner to those spots and scrub again. Avoid excessive scrubbing that could raise the grain of the cedar.
- Rinse with a power washer deck cleaning attachment set to a low-pressure setting. Keep the nozzle at a safe distance to prevent gouging or splintering the cedar surface.
- Let the deck dry fully. If color uniformity is needed, apply a cedar deck brightener again after the initial rinse, then rinse once more after the brighten step.
- If stains persist, consider a cedar deck stain remover and cleaner kit as a final treatment. Follow the kit directions carefully and ensure complete rinsing.
- Inspect for remaining stains or mildew after drying. Repeat the cleaning cycle on any persistent areas, if necessary, then allow full cure before sealing.
- Prepare for sealing or staining by ensuring the cedar is completely dry and free of cleaners, which helps achieve an even, lasting finish.
- Store tools properly after use and clean the scrub brushes to extend their life for future cleaning projects.
Troubleshooting
| Symptom | Likely Cause | Fix | Prevention |
|---|---|---|---|
| Faint whitening or uneven color | Uneven cleaner dwell time or insufficient rinsing | Reapply cleaner to problem areas and rinse thoroughly | Follow dwell times and rinse until water runs clear |
| Stubborn mildew on shaded areas | Poor air circulation and lingering moisture | Apply a brighter or stain remover kit as directed, ensure thorough drying | Improve airflow with ventilation and trim nearby debri |
| Wood grain raised after cleaning | Overly aggressive scrubbing or high-pressure rinse | Switch to a gentler brush and reduce pressure | Test area first and use consistent, light scrubbing |
| Bleach-like color on cedar | Over-bleaching from strong cleaners | Rinse immediately and dilute cleaner next time | Follow label guidance and do smaller test patches |
Common Mistakes
- Using high-pressure settings that gouge or shred cedar fibers
- Skipping a thorough rinse, leaving cleaner residues that attract dirt
- Cleaning in direct sun, which can cause fast drying and uneven results
- Neglecting to dry the deck completely before sealing or staining
Tips For Best Results
- Work in shade when possible to control dwell time and drying rates
- Test all products on a hidden area before full application
- Use a clean, properly sized brush for even scrubbing across boards
- Rinse from top to bottom to push dirty water away from cleaned areas
- Wait for dry, calm conditions to avoid rapid evaporation and streaks
- After cleaning, consider applying a sealer to maintain cedar color and protect from moisture
Call A Professional
Consider a pro if the deck shows extensive rot, broken boards, or stubborn mold that fails to respond to standard cleaners. Stop and consult a professional if you notice warped boards, nails protruding, or inconsistent staining after cleaning. Complex staining or multiple failure spots may require specialty products and equipment beyond DIY scope.
FAQ
What is the best cleaner for cedar decks?
The best cleaner depends on the deck’s condition: a cedar deck cleaner concentrate for pressure washers for large areas or a cedar deck brightener for targeted brightening and color restoration.
Can I power wash my cedar deck?
Yes, with a low-pressure setting and appropriate nozzle to avoid damage. Use a dedicated power washer deck cleaning attachment and keep the spray at a safe distance.
How long should cedar dry after cleaning?
Typically 24–48 hours, depending on humidity and sun exposure. Ensure the surface is completely dry before sealing or staining.
Is staining necessary after cleaning?
Staining is optional but often recommended to protect cedar and maintain color. Allow the deck to dry fully before applying any stain or sealer.
What’s the best brush for cedar deck cleaning?
A deck cleaning brush set cedar wood scrubbing brush with stiff bristles is effective for removing mildew without damaging fibers.
What about staining the cedar after cleaning?
Using a cedar deck stain remover and cleaner kit can help lift deep stains before resealing. Follow kit instructions and perform a thorough rinse.
Buying Guide
When choosing products to clean a cedar deck, consider size of the deck, expected dirt load, and climate. Look for concentrates that are easy to mix and use with a pressure washer, or sprays suitable for manual brushing. Noise level and energy efficiency matter when using power washers, especially in shared spaces. Consider the deck’s placement—exposed sun or shaded areas may require different dwell times and repeat treatments. Compare options for brightening versus cleaning, and for stain removal capabilities. Always check compatibility with cedar wood and potential impact on color and grain. Finally, assess ease of use, safe storage, and clear label instructions to ensure effective and safe cleaning sessions.