Cleaning asphalt roof shingles requires a careful approach to remove tough stains without damaging the roofing material. Proper cleaning can effectively eliminate moss, algae, black water streaks, and bird waste. The process involves using a suitable cleaning solution, applying it correctly, and rinsing thoroughly. Safety precautions are crucial, as is choosing the right tools and techniques for different types of stains.
Steps for Cleaning Asphalt Shingles
Sweep the Roof
Begin by sweeping the roof to remove loose debris, leaves, and dirt. This step is crucial as it prevents these materials from interfering with the cleaning process. Use a medium-bristle push broom or a leaf blower to clear the surface. Be gentle to avoid dislodging shingle granules, which protect the roof from UV rays and weather damage.
Fill the Sprayer
Prepare your cleaning solution in a backpack or pump sprayer. For general cleaning, mix equal parts water and bleach. For tougher stains, consider a commercial roof cleaner designed for asphalt shingles. Avoid using harsh chemicals or pressure washers, as these can damage the shingles and reduce their lifespan.
Apply the Cleaning Agent to the Roof
Apply the cleaning solution evenly across the roof, working in small sections. Household bleach is effective for most stains and algae growth. For tougher jobs, sodium hypochlorite solutions are more potent but should be used cautiously. Ensure complete coverage of the affected areas, allowing the solution to sit for about 15-20 minutes before rinsing.
Rinse the Roof
After the cleaning solution has had time to work, thoroughly rinse the roof with clean water from a garden hose. Start from the top and work your way down, ensuring all cleaning agents are completely washed away. This step is crucial to prevent any residual chemicals from causing damage to the shingles or gutters.
Scrub Stuck-on Grime and Stains
For persistent stains or growths, gentle scrubbing may be necessary. Use a soft-bristled brush or a broom to lightly agitate the area. Be careful not to scrub too hard, as this can loosen the protective granules on the shingles. Focus on problem areas and rinse thoroughly after scrubbing.
Safety Considerations
Safety should be your top priority when cleaning a roof. Always work on a dry day with calm weather to reduce the risk of slips and falls. Wear non-slip shoes and use fall arrest equipment, especially on steep roofs. Be aware of your surroundings, including power lines and the roof’s edge.
When using cleaning chemicals, wear protective gear including gloves, eye protection, and a mask to avoid skin irritation or inhalation of fumes. Keep the area around the house clear of people and pets during the cleaning process to prevent exposure to runoff or falling debris.
If you’re uncomfortable working at heights or dealing with chemicals, consider hiring a professional roofing contractor. They have the experience and equipment to clean your roof safely and effectively, potentially saving you from costly mistakes or injuries.
What You’ll Need
To clean asphalt roof shingles effectively, you’ll need the following tools and equipment:
- Fall arrest equipment
- Ladder
- Medium-bristle push broom
- Leaf blower
- Backpack or pump sprayer
- Garden hose
Getting Rid of The Toughest Roof Stains
Removing Moss & Algae
Moss and algae not only detract from your home’s appearance but can also cause damage to your roof over time. To remove these growths, apply a mixture of equal parts water and bleach or a specialized moss remover. Allow the solution to sit for about 20 minutes before gently scrubbing with a soft-bristled brush.
For prevention, consider installing zinc or copper strips near the roof’s peak. As rainwater washes over these metals, it creates an environment inhospitable to moss and algae growth, helping to keep your roof clean for longer periods. If you are considering a new roof installation services, Atlas Roofing is your top choice.
Getting rid of the Black Streaks
Black streaks on asphalt shingles are typically caused by a type of algae called Gloeocapsa magma. These streaks can be particularly stubborn to remove. Start by applying a cleaning solution specifically designed for this type of algae. Let it sit for about 15 minutes, then rinse thoroughly with clean water.
For extensive black streak problems, you may need to repeat the process. After cleaning, consider applying a preventative treatment that creates a protective barrier against future algae growth. Regular cleaning and maintenance can help prevent these streaks from returning.
Key Takeaways
Proper cleaning of asphalt roof shingles is essential for maintaining your roof’s appearance and extending its lifespan. Regular inspections and prompt cleaning can prevent the buildup of moss, algae, and other stains that can damage your roof over time. Always prioritize safety and use appropriate cleaning methods to avoid damaging the shingles.
Remember that while DIY cleaning is possible, professional cleaning services are available for those uncomfortable with heights or lacking the necessary equipment. Regardless of the method chosen, consistent roof maintenance will protect your investment and keep your home looking its best for years to come.
