How to Clean Terracotta Roof Tiles

How to Clean Terracotta Roof Tiles

Terracotta roof tiles are popular in Australia for their durability, natural insulation properties, and timeless aesthetic appeal. However, to maintain their beauty and extend their lifespan, regular cleaning and maintenance are essential. 

To clean terracotta roof tiles effectively, start with a gentle manual scrubbing using a soft brush, then use a low-pressure washer (around 1,200 PSI) to remove moss, algae, and dirt. Avoid harsh chemicals and high-pressure settings to prevent damage. After cleaning, apply a sealant to protect the tiles from future stains and weathering. Regular maintenance, including inspections and tile resetting, will help extend the lifespan of your terracotta roof.

In this guide, we'll walk you through the best methods, tools, and tips for cleaning terracotta roof tiles, ensuring your roof remains in top condition for years to come.

What Are Terracotta Roof Tiles?

Terracotta roof tiles are made from natural clay that is fired at high temperatures, resulting in a sturdy and weather-resistant roofing material. These tiles have been used for centuries, particularly in Mediterranean and tropical climates, due to their excellent thermal properties. In Australia, terracotta tiles are favoured for their ability to keep homes cooler in the summer and warmer in the winter, as well as for their aesthetic versatility.

Why is Terracotta Roof Cleaning Necessary?

Over time, terracotta tiles can accumulate dirt, moss, lichen, and algae, which not only detract from their appearance but can also cause long-term damage. The combination of organic growth and debris can trap moisture, leading to the deterioration of the tiles and the underlying roof structure. Regular cleaning is crucial to prevent these issues and to maintain the tiles' natural beauty. Additionally, the Australian climate, with its high humidity and frequent rainfall, can accelerate the growth of moss and algae, making regular maintenance even more important.

Terracotta Roof Cleaning Tips

  1. Preparation

    • Safety First: Before you begin cleaning, take necessary precautions. Wear non-slip shoes, use a sturdy ladder, and consider a safety harness if your roof is steep.

    • Gather Tools: Prepare by gathering a soft brush, a pressure washer (with a low-pressure setting), and eco-friendly cleaning products.

    • Inspect Your Roof: Check for any cracked or loose tiles that may need repair before you start cleaning.

  2. Manual Cleaning

    • Gentle Scrubbing: Use a soft brush to gently scrub the tiles, focusing on areas with heavy moss or lichen buildup.

    • Avoid Abrasives: Do not use metal brushes or abrasive tools that can scratch the tiles.

    • Mild Detergent: For tough stains, use a mixture of water and a mild detergent, but be sure to rinse thoroughly to remove any residue.

  3. Pressure Washing

    • Low-Pressure Setting: If using a pressure washer, set it to around 1,200 PSI to avoid damaging the tiles.

    • Start from the Top: Begin cleaning from the top of the roof and work your way down, keeping the nozzle at a safe distance from the tiles.

    • Effective Cleaning: This method is effective for removing moss, algae, and dirt but requires careful handling to prevent water from seeping under the tiles.

  4. Chemical Treatments

    • Stubborn Stains: For persistent stains or extensive moss and lichen growth, use a chemical treatment specifically designed for terracotta tiles.

    • Follow Instructions: Apply the treatment according to the manufacturer’s instructions and rinse off after the recommended time.

    • Eco-Friendly Choices: Always opt for eco-friendly products that won’t harm your garden or the environment.

  5. Choosing an Eco-Friendly Cleaner

    • Biodegradable Products: Select cleaners that are biodegradable and free from harsh chemicals to protect both your tiles and the environment.

    • Prevent Damage: Avoid acidic or abrasive cleaners that could cause potential damage to your terracotta tiles.

How to Protect Terracotta Tiles After Cleaning

1. Applying Sealant

Once your terracotta tiles are clean, applying a sealant can help protect them from future stains and weathering. Sealants create a protective barrier that repels water and prevents the growth of moss and algae. Follow the manufacturer's instructions for application, and ensure the tiles are completely dry before sealing.

2. Extending the Lifespan of Your Tile Roof

Regular maintenance is key to extending the lifespan of your terracotta roof tiles. This includes routine inspections for cracks or damage, as well as periodic cleaning to remove dirt and organic growth. By addressing minor issues early, you can prevent more significant problems down the line and keep your roof looking its best.

3. Preventing Future Damage

To protect your terracotta roof tiles from future damage, consider trimming overhanging branches that can drop leaves and debris onto your roof. Also, ensure your gutters are clear to prevent water from backing up onto the tiles. Regularly inspect your roof after storms or heavy winds to catch any damage early.

Common Mistakes to Avoid When Cleaning Terracotta Roof Tiles

1. Don’t Use Harsh Chemicals

Avoid using acidic or abrasive cleaners, as they can damage the surface of the terracotta tiles. Stick to gentle, pH-neutral cleaners that are specifically designed for clay tiles.

2. Avoid High Pressure

Using a pressure washer with too much force can crack or dislodge the tiles, leading to leaks and costly repairs. Always use the lowest effective pressure setting and maintain a safe distance from the tiles.

3. Walking on Tiles

Terracotta tiles can be fragile, so it's essential to be cautious when walking on them. Distribute your weight evenly and step only on the strongest parts of the tiles, such as the ridges. If possible, avoid walking on the tiles altogether by using a roof ladder or engaging professional services.

Terracotta Tile Roof Maintenance

1. Regular Inspections

Conduct regular inspections of your terracotta roof tiles to check for any signs of damage or wear. Look for cracked, chipped, or loose tiles, and address any issues promptly to prevent further damage.

2. Cleaning Schedule

To maintain your terracotta roof tiles, establish a regular cleaning schedule. Depending on your location and the surrounding environment, you may need to clean your roof annually or biannually.

3. Tile Resetting

Over time, tiles may shift due to wind, rain, or natural settling. Reset any loose tiles to ensure they stay in place and maintain the integrity of your roof.

Hiring Professional Help for Tile Roof Cleaning

1. When to Consider Professional Cleaning

While DIY cleaning can be effective, there are situations where professional help is advisable. If your roof is particularly steep, large, or heavily stained, hiring a professional can ensure a thorough and safe cleaning.

2. What to Look for in a Professional Service

When choosing a professional roof cleaning service, look for companies with experience in cleaning terracotta tiles. Check for positive customer reviews and ask about their cleaning methods and safety practices.

3. Costs and Benefits

While professional cleaning may involve an upfront cost, the long-term benefits include prolonged roof lifespan, improved aesthetic appeal, and the prevention of costly repairs.

Things You Should Consider

1. Terracotta Floor Cleaning

Terracotta is not just for roofs—many homeowners also have terracotta floors. Learn about the best practices for cleaning and maintaining terracotta floor tiles to keep them looking their best.

2. Protecting Your Roof Investment

Your roof is a significant investment. Proper care and maintenance not only extend its lifespan but also add value to your property. Discover more tips on how to protect your roof and enhance its durability.

3. Roof Restoration Options

If your terracotta roof is showing signs of ageing or damage, consider roof restoration options. Restoration can involve cleaning, repairing, and resealing the tiles to restore their original beauty and functionality.

Maintaining your terracotta roof tiles is crucial for preserving their appearance and extending their lifespan. By following the steps outlined in this guide, you can ensure your roof remains in excellent condition for years to come. Whether you choose to tackle the cleaning yourself or hire a professional, regular maintenance is the key to protecting your investment.

Want to Become a Roofing Professional?

If you're passionate about construction and eager to turn your interest into a fulfilling career, consider the diverse range of courses offered by the Building Institute. While the Building Institute is renowned for its qualifications in construction and tiling, these courses provide a solid foundation in skills that are invaluable for anyone looking to excel in hands-on, detail-oriented professions.

Start your journey today and build a future where your passion meets professional success. Enroll Now and take the first step toward becoming a skincare expert!

FAQ

Can I clean my own roofing tiles?

Answer: Yes, you may clean your own roof tiles as long as you take adequate safety precautions, such as using ladders safely and wearing suitable footwear. However, employing professional assistance provides experience in a variety of cleaning procedures and lowers the hazards connected with working at heights.

Can I use terracotta tiles in the bathroom?

Answer: Terracotta is a beautiful, rustic alternative for bathroom walls and flooring. However, use caution in wet rooms with walk-in showers, especially if there is no underfloor heating to assist in drying fast. And yes, it works with underfloor heating.

Can you use vinegar on terracotta tiles?

Answer: Avoid using cleaners containing acids, vinegar, or ammonia, since they might harm or discolour terracotta tile floors.

How can you clean ancient terracotta roof tiles?

Answer: Pressure cleaning should be performed as part of the repair process on these roofs before repointing. If you wish to pressure clean a terracotta tile roof, the ideal method is to first use Bio-Shield to destroy and soften the growths, then pressure clean after 3 to 4 weeks. Pressure cleaning clay tile roofs causes leaks.

What kills lichen naturally?

Answer: Vinegar is a weak acid that may destroy and remove lichen from concrete surfaces.

How do you remove stains from terracotta tiles?

Answer: Mop or sponge. Terracotta tile cleaning (or a solution of warm water and mild detergent) Scrubbing pad or brush with soft bristles. Clean, and dry towels and rags.