How To Clean Cedar Shake Siding

Safely Clean Cedar Shake Siding for a Fresh Look

Cedar shake siding gives a home a classic, rustic charm. Its natural beauty makes it a popular choice. However, like any exterior surface, cedar shake siding collects dirt, grime, algae, and mold over time. This buildup makes your home look dull and can cause damage to the wood. Cleaning cedar shake siding regularly is important. It keeps your home looking good and protects your investment.

Neglecting your cedar shakes leads to issues like premature decay and rot. This detailed guide shows you how to properly clean cedar shake siding. We discuss the right tools, gentle methods, and solutions. You will learn how to remove tough stains and maintain the wood’s integrity. My goal is to help you restore your home’s curb appeal safely and effectively. Let’s get your cedar siding looking its best again.

Takeaway

• Gather the right tools and cleaning solutions before you begin.
• Always test cleaning products on a small, hidden area first.
• Use gentle methods like soft washing or hand scrubbing.
• Address mold and algae with specific, wood-safe solutions.
• Exercise extreme caution if using a pressure washer, keeping distance and low pressure.
• Rinse thoroughly and allow the siding to dry completely.
• Apply a protective finish for long-term preservation.

Cleaning cedar shake siding involves gentle methods and the right solutions. You need to remove dirt, mold, and algae without harming the wood. This often means soft washing with a dedicated wood cleaner, careful rinsing, and proper drying. Avoid high-pressure washing to prevent damage.

Why Cedar Shake Siding Needs Regular Cleaning

Cedar shake siding offers unique aesthetic appeal. It also provides good insulation for your home. However, its natural texture and exposure to elements make it prone to accumulating various forms of debris and organic growth. Regular cleaning is not just about looks. It is crucial for the longevity and health of the wood. Unchecked buildup leads to significant problems.

Over time, dirt, dust, and pollen settle on the shakes. These particles become embedded in the wood’s grain. This creates a dull, dirty appearance. More concerning is the growth of algae, mildew, and mold. These organisms thrive in damp, shaded conditions common on exterior surfaces. They feed on the wood itself, causing it to deteriorate. This leads to soft spots, rot, and structural damage if left untreated. Regular maintenance prevents these issues. It preserves the beauty and integrity of your cedar shakes for many years.

Cleaning also improves your home’s energy efficiency. Clean siding reflects more sunlight. Dirty, dark siding absorbs heat. This can make your home warmer in summer. By cleaning your cedar shake siding, you maintain its natural protective qualities. This prevents costly repairs or replacements down the line. A clean exterior also boosts your home’s curb appeal. It makes a strong first impression for visitors or potential buyers. Protect your investment with proper care.

Essential Tools and Supplies for Cleaning Cedar Shakes

Before you begin cleaning your cedar shake siding, gather all the necessary tools and supplies. Having everything ready makes the process smoother and more efficient. The right equipment ensures a safe and effective clean without damaging the delicate wood. You will need basic protective gear to keep yourself safe from cleaning solutions and debris. These items are readily available at most hardware or home improvement stores.

First, you need a garden hose with a spray nozzle. A soft-bristled brush is important for scrubbing. Choose a brush with natural or synthetic bristles. Make sure they are soft enough not to scratch the wood. You might also need a bucket for mixing solutions. For cleaning solutions, consider oxygen bleach or a specialized wood cleaner. Oxygen bleach is effective against mold and mildew. It is safer for wood than chlorine bleach. For tougher mold problems, you might use a vinegar cleaning solution. Always check the product label for specific instructions.

Safety gear is also crucial. Wear gloves to protect your hands from chemicals. Eye protection is important to shield your eyes from splashes. Consider a hat and long sleeves if you are working in sunny conditions. A ladder or sturdy scaffolding may be needed to reach higher areas. Ensure any ladder you use is stable and placed on firm ground. Always work with a helper when using a ladder. Having the right tools ensures you can tackle the job safely and effectively.

• Garden Hose and Nozzle: For rinsing and applying some solutions.
• Soft-Bristled Brush: A long-handled brush for scrubbing without damage.
• Buckets: For mixing cleaning solutions.
• Oxygen Bleach or Wood Cleaner: Choose products specifically designed for wood exteriors.
• Protective Gear: Gloves, eye protection, and old clothes.
• Drop Cloths or Plastic Sheeting: To protect plants and surrounding areas.
• Ladder or Scaffolding: For reaching high areas safely.
• Pump Sprayer (Optional): For even application of cleaning solutions.

Preparing Your Home for Cedar Siding Cleaning

Proper preparation is a crucial step before you start cleaning your cedar shake siding. This preparation protects your landscaping, ensures safety, and sets you up for a more effective cleaning process. Skipping this stage can lead to damaged plants, stained surfaces, or even personal injury. Take your time with these initial steps. They make the actual cleaning much easier and safer.

Start by clearing the area around your house. Move any outdoor furniture, grills, or decorations away from the siding. This prevents them from getting wet or damaged by cleaning solutions. Next, protect your plants and shrubs. Water your plants thoroughly before cleaning. This helps them absorb less of any runoff from the cleaning solution. Then, cover them with plastic sheeting or tarps. Use painter’s tape or weights to secure the covers. This shields them from direct contact with chemicals. Remember to rinse off any residual cleaner from plants after you finish.

Close all windows and doors securely. You do not want water or cleaning solutions to enter your home. Also, cover or remove any electrical outlets or light fixtures on the siding. This prevents electrical hazards. If you have delicate lighting, remove the bulbs or fixtures entirely. Finally, lay down tarps or drop cloths on patios, walkways, or driveways below the cleaning area. This catches any dirty runoff or cleaning solution. This prevents staining of concrete or other hard surfaces. These steps protect your property and ensure a smooth cleaning experience.

Gentle Cleaning Methods for Cedar Shake Siding

Cleaning cedar shake siding requires a gentle touch. Aggressive cleaning methods can damage the wood, leading to costly repairs. The goal is to remove dirt and organic growth without stripping the wood’s natural oils or causing splintering. There are several effective gentle methods you can use. These methods help preserve the beauty and integrity of your cedar shakes for years to come.

One popular method is soft washing. This involves applying a cleaning solution at low pressure, allowing it to penetrate and loosen grime, then rinsing it away gently. You can use a standard garden hose with a spray nozzle for rinsing. For the cleaning solution, a mixture of water and oxygen bleach is often recommended. Mix according to product instructions. Apply the solution with a pump sprayer. Let it sit for 15-20 minutes, or as directed. Do not let it dry on the siding. Then, rinse thoroughly from top to bottom. Make sure to remove all traces of the cleaning agent. This method minimizes physical abrasion on the wood.

Hand scrubbing is another gentle and effective option, especially for smaller areas or stubborn spots. Use a soft-bristled brush attached to a long handle. Dip the brush into your cleaning solution. Gently scrub the siding in the direction of the wood grain. This helps lift dirt and mold without damaging the surface. Rinse sections as you go to prevent solutions from drying. Always work in manageable sections. This ensures the siding stays wet during the cleaning process. These gentle methods are key to successful cedar shake siding maintenance.

• Soft Washing with Oxygen Bleach:
  • Mix oxygen bleach according to package directions with water.
  • Apply with a garden sprayer, ensuring even coverage.
  • Let the solution sit for 15-20 minutes. Do not let it dry.
  • Rinse thoroughly with a garden hose, working from top to bottom.
• Hand Scrubbing:
  • Use a soft-bristled brush.
  • Dip the brush in a mild solution (e.g., dish soap and water, or diluted oxygen bleach).
  • Gently scrub the affected areas in the direction of the wood grain.
  • Rinse immediately with a garden hose.

Removing Stubborn Stains and Mold from Cedar Siding

Cedar shake siding can develop stubborn stains and organic growth like mold, mildew, and algae. These growths are not just unsightly. They also cause decay and shorten the lifespan of your siding. Addressing these issues with the right approach is vital for the health and appearance of your home. It needs specific treatments beyond general cleaning. I find that targeting these growths directly yields the best results.

For mold and mildew, a solution of oxygen bleach is highly effective. Unlike chlorine bleach, oxygen bleach breaks down into oxygen and soda ash. This makes it safer for the wood and surrounding plants. Mix the oxygen bleach with water according to the manufacturer’s instructions. Apply this solution generously to the affected areas using a pump sprayer. Allow it to dwell for 15-30 minutes. Keep the area wet during this time. Do not let the solution dry on the siding. For very stubborn spots, a second application or light scrubbing with a soft brush may be necessary. Remember to always rinse thoroughly afterwards. If you want to know more about how to clean mold with vinegar, that resource can offer additional insights for specific situations.

Algae often appears as green or black discoloration. It thrives in damp, shaded areas. The oxygen bleach solution also works well for algae removal. For specific stains on wood, you might need different treatments. Tannin stains, which are dark streaks from the wood itself, might require oxalic acid-based cleaners. Always test any strong cleaner in an inconspicuous area first. This checks for any adverse reactions. Ensure proper ventilation and wear protective gear when using these products. Consistent maintenance prevents heavy buildup. This makes future cleanings much simpler.

• Oxygen Bleach Application:
  • Mix oxygen bleach solution per product instructions.
  • Spray onto moldy or stained areas.
  • Allow 15-30 minutes dwell time, keeping the surface wet.
  • Gently scrub with a soft brush if needed.
  • Rinse completely with fresh water.
• For Deep Stains:
  • Consider specialized wood brighteners containing oxalic acid for tannin stains.
  • Always test a small, hidden spot first.
  • Follow product directions precisely for application and rinsing.

Pressure Washing Cedar Shakes: Use Caution

Using a pressure washer on cedar shake siding is a common thought. Many homeowners use pressure washers for other types of siding. While a pressure washer can remove dirt quickly, it presents significant risks to cedar. Cedar shakes are softer than other siding materials. They are also installed in a way that can be easily damaged by high-pressure water. If not used correctly, a pressure washer can cause more harm than good. I strongly advise extreme caution if you choose this method.

High-pressure water can gouge and splinter the wood fibers. This exposes the inner layers of the cedar to moisture. This leads to accelerated rot and decay. It can also strip away the natural color of the wood. It can force water behind the shakes. This causes moisture problems within your wall cavities. This creates a perfect breeding ground for mold and mildew inside your home. It can also damage insulation. The key is to use very low pressure, often called “soft washing” with a pressure washer. This is more about applying the solution and rinsing gently.

If you must use a pressure washer, follow specific guidelines. Use the widest fan tip available, usually a 40-degree white tip. Keep the pressure setting very low, typically below 500-600 PSI. Maintain a distance of at least 18-24 inches from the siding. Always spray downwards, following the grain of the wood. Never spray directly into seams or upwards. Start in an inconspicuous area to test your technique and pressure. Move the wand continuously. Do not dwell in one spot. Using a dedicated siding cleaning nozzle might help. Consider hiring a professional experienced in cleaning cedar. They know the correct pressure and techniques to prevent damage. Most professionals use soft washing methods.

• Key Pressure Washing Precautions:
  • Low Pressure Only: Max 500-600 PSI. Use the lowest setting possible.
  • Wide Fan Tip: Use a 40-degree or greater fan nozzle.
  • Maintain Distance: Keep the nozzle at least 18-24 inches from the surface.
  • Spray Downwards: Always spray in the direction of the wood grain, never upwards.
  • Test First: Practice on an unseen area.
  • Keep Moving: Do not linger in one spot.
  • Professional Help: Consider hiring a professional with cedar cleaning experience.

Post-Cleaning Care and Protecting Your Cedar Siding

Once your cedar shake siding is clean, the job is not completely finished. Proper post-cleaning care is essential. It ensures the wood dries correctly. It also prepares the siding for protection. This final step helps maintain the clean appearance for a longer time. It also extends the overall lifespan of your cedar. Neglecting post-cleaning steps can undo your hard work. It can leave the wood vulnerable to future damage.

The most important step after cleaning is thorough rinsing. Ensure all cleaning solutions are completely removed from the siding. Any residual cleaner can cause discoloration or damage over time. Rinse from the top of your siding down to the bottom. Use a garden hose with good water pressure. Make sure water flows over all surfaces. Check for any remaining suds or residue. Once rinsed, allow the cedar siding to dry completely. This might take several sunny days. Good air circulation helps. Do not apply any finishes until the wood is bone dry. Applying a finish to damp wood traps moisture inside. This can lead to mold growth and rot.

After the siding is dry, consider applying a protective finish. There are several options for this. A clear water repellent provides a barrier against moisture. This prevents water absorption. It reduces the likelihood of mold and mildew growth. Some homeowners choose a clear or semi-transparent stain. This enhances the wood’s natural color while offering protection. Always choose a finish designed for exterior wood and specifically for cedar. Apply it according to the manufacturer’s instructions. Regular maintenance checks, like inspecting for new growth or damage, help keep your cedar shake siding beautiful for decades. This proactive approach saves you time and money.

Maintaining Cedar Siding for Lasting Beauty

Keeping your cedar shake siding in top condition is an ongoing process. Regular maintenance goes beyond just cleaning. It involves a proactive approach to protect the wood from the elements and prevent future issues. By following a consistent maintenance schedule, you can significantly extend the life and beauty of your cedar siding. This approach avoids major restoration projects down the road.

First, routinely inspect your siding for signs of wear, damage, or new growth. Walk around your home at least once a year. Look for discoloration, loose shakes, cracks, or any signs of mold, mildew, or algae returning. Pay close attention to shaded areas or parts of the house that receive less sunlight. These spots are more prone to moisture retention and organic growth. Address small issues immediately. This prevents them from becoming larger, more expensive problems. Loose shakes should be re-secured promptly. Minor mold spots can be spot-cleaned.

Trimming nearby vegetation is another key maintenance step. Trees, bushes, and vines that grow too close to your siding can trap moisture against the wood. They also block sunlight, creating ideal conditions for mold and mildew. Trim branches and shrubs so they are at least a foot or two away from the siding. This allows for better airflow and sunlight exposure. Good air circulation helps the wood dry faster after rain. It reduces the chance of moisture-related problems. Ensuring proper drainage around your home also helps. Divert rainwater away from the foundation and siding. These simple, consistent efforts keep your cedar shake siding looking vibrant and healthy for many years to come.

• Annual Inspections:
  • Check for discoloration, loose shakes, cracks, or signs of new mold/algae growth.
  • Focus on shaded areas.
  • Address small issues immediately.
• Vegetation Management:
  • Trim trees and shrubs away from the siding (at least 1-2 feet).
  • Ensure good airflow and sunlight exposure.
• Drainage Check:
  • Make sure gutters are clean and direct water away from the foundation.
  • Ensure landscape slopes away from the house.

FAQ Section

How often should I clean cedar shake siding?

You should clean cedar shake siding every 3-5 years. The exact frequency depends on your climate and local conditions. Homes in humid or shady environments may need more frequent cleaning. Regular inspections help you determine the best schedule. Cleaning prevents heavy buildup and maintains the wood’s health.

What is the best cleaning solution for cedar shakes?

For cedar shakes, the best cleaning solution is typically an oxygen bleach-based product mixed with water. This solution effectively removes mold, mildew, and dirt. It is safer for wood than chlorine bleach. Always follow the manufacturer’s instructions for mixing and application. Test on an inconspicuous area first.

Can I use a pressure washer on cedar shake siding?

Using a pressure washer on cedar shake siding is not recommended for most homeowners. High pressure can severely damage the wood. If you must use one, use very low pressure (under 600 PSI) and a wide fan tip (40 degrees or more). Keep a good distance from the siding. Spray only downwards.

How do I remove black mold from cedar siding?

To remove black mold from cedar siding, use an oxygen bleach solution. Mix it according to directions and apply with a pump sprayer. Let it sit for 15-30 minutes, keeping the surface wet. Gently scrub with a soft brush if needed. Rinse thoroughly with a garden hose afterward.

What causes cedar shake siding to turn black?

Cedar shake siding turns black primarily due to the growth of mold, mildew, and algae. These organisms thrive in damp, shaded conditions. They feed on the wood and environmental particles, creating black discoloration. Dirt and pollution can also contribute to darkening the wood’s surface over time.

Should I seal cedar shake siding after cleaning?

Yes, after cleaning cedar shake siding, consider applying a protective finish once it is completely dry. A clear water repellent or a semi-transparent stain designed for exterior wood can help. This finish protects the wood from moisture and UV damage. It also reduces future mold and mildew growth.

Conclusion

Cleaning cedar shake siding is an essential part of home maintenance. It not only restores your home’s aesthetic appeal but also protects your valuable investment. By understanding the unique needs of cedar and employing gentle, effective methods, you can keep your siding looking beautiful for years to come. Remember, patience and proper technique are your best allies when working with this natural material.

Always prioritize safety. Gather the right tools, and use appropriate cleaning solutions. Avoid harsh chemicals and high-pressure washing that can damage the wood. Regularly inspect your cedar shake siding. Address any issues promptly. This proactive approach prevents small problems from becoming costly repairs. With the right care, your cedar shakes will continue to provide beauty and protection for your home. Begin your cleaning project with confidence. Enjoy the renewed look of your cedar shake siding.