For longevity and visual appeal, you must keep your metal roof in perfect shape. Rust stains are easily removed from your roof with a pressure washer, giving it a shiny new appearance. If the discoloration is really difficult to remove, you might want to use a pressure wand or metal-specific chemicals. Instead, hiring an expert to handle the cleaning will guarantee complete cleaning without any chance of damage, which is especially important for complex or fragile roof structures. Frequent maintenance not only prolongs the life of your roof and improves its curb appearance, but it also guards against corrosion. Use these proactive cleaning techniques to keep your metal roof looking great and maintaining its strength.

image depicting a professional worker using a pressure wand to clean a roof.

Use a Pressure Wand to Clean

Cleaning a metal roof using a pressure wand can be a very good technique to get rid of mildew and debris. This will not only give your house a more polished appearance, but it will also stop dirt from collecting and damaging the metal roof.

Cleaning a metal roof isn’t that difficult, and it will restore the original appearance of your roof. But it’s crucial to keep in mind to adhere to the guidelines for effectively cleaning a metal roof. You and your loved ones will be safe because of this.

You must first ascertain the most effective method for cleaning a metal roof. A nice place to start is with a pressure wand, but use caution to prevent injury. For instance, you should stay away from high-pressure water close to exposed spots like the eaves of the roof.

When it comes to safety, washing your house with a hose and a pressure wand are identical. Wear safety gear at all times, such as rubber gloves, goggles, and a cap. This will shield your neck from the water, which will otherwise reach your skin.

Remove Rust Spots

Fortunately, homeowners may apply techniques to remove rust stains from metal roofs. It’s crucial to understand the possible risks connected to these procedures, though.

Metals that have come into contact with moisture in the air are typically the cause of rust spots. An orange or reddish-brown rusting is the end outcome. These stains are ugly and inappropriate for a home’s façade.

Thankfully, there are several solutions available to remove rust. These chemicals are available at most hardware stores. But it’s crucial to adhere to the manufacturer’s recommendations.

It might be challenging to remove rust from metal roofs. It could be necessary to scrape the roof down or leave it submerged in the cleaner for a long time. Additionally, you might want to put on safety equipment including goggles, long sleeves, and a respirator.

In addition to being unsightly, rust can harm structural components. It may also pose a risk to children’s and animals’ safety.

Spot Clean Tough Stains With a Solvent

It might be difficult to spot clean stubborn stains on a metal roof with a solvent. The best course of action is to limit their use to areas that truly require them. A gallon of hot water and trisodium phosphate (TSP) are the recommended solvents for the task. Use a moist cloth to wipe up the liquid after giving it a short hose-down.

The ideal method for using a solvent to spot-clean a difficult-to-clean stain is to apply light pressure—no more than 10 pounds of force. By doing this, the solvent will be able to dissolve the dirt without endangering your roof or lungs. Here are some pointers and advice to get you started.

The best metal roof cleaning solution for the job should be chosen from the several available on the market. The greatest ones can be found at your neighborhood home improvement store. Dish soaps, mild laundry detergents, and commercial or industrial detergents are a few popular types.

the image depicts a professional roofing scene.

Hire Professionals

A quick and simple technique to get rid of dirt and debris from a metal roof is to use a power washer. But it’s crucial to adhere to the product’s cleaning instructions. The product can harm your metal roof if it is used incorrectly. It might even hasten rusting.

First, cover the entire area surrounding the roof. Put on gloves or other weather-resistant apparel to shield oneself from the elements. If required, put on a pair of safety glasses. Apply the solution to the surface using a sponge or brush with soft bristles. After applying the solution, let it sit for five to ten minutes and then rinse it off with normal water.

To get rid of dirt and debris, use a light-duty detergent if the metal roof is coated. Mopping is advised for bigger regions. Distributing the detergent solution uniformly is made possible by using a mop.

Additional tools, like one for washing panels, could be needed for some types of roofs. Applying pressure to a painted metal roof may cause the paint to deteriorate. It is recommended to engage a professional if this is the case.


In conclusion, maintaining a metal roof’s cleanliness and structural integrity is vital for both aesthetic appeal and long-term durability. Utilizing effective cleaning methods like pressure washing, using solvents for tough stains, and seeking professional assistance ensures your roof remains in optimal condition. Regular upkeep not only enhances curb appeal but also guards against corrosion, preserving the roof’s strength and lifespan. By following recommended cleaning practices and safety precautions, homeowners can confidently maintain their metal roofs, ensuring they continue to protect their homes while looking their best for years to come. Regular maintenance is key to safeguarding both property value and structural integrity.

FAQs – Cleaning A Metal Roof With A Pressure Washer

1. Is it safe to clean a metal roof with a pressure washer?

  • Using a pressure washer on a metal roof is generally safe if done correctly. Ensure you use the appropriate pressure settings and techniques to avoid damaging the roof or causing leaks.

2. What PSI (pressure) should I use when cleaning my metal roof?

  • It’s recommended to use a pressure washer with a PSI (pounds per square inch) between 1,200 and 1,500 for cleaning metal roofs. Adjust the pressure based on the roof’s condition and the type of dirt or stains.

3. Can I remove rust stains from a metal roof using a pressure washer?

  • Yes, pressure washers can effectively remove rust stains from metal roofs. However, stubborn stains may require additional treatments or higher pressure settings.

4. Are there any precautions I should take when using a pressure washer on my metal roof?

  • Always wear safety gear, including goggles and gloves, and be cautious around edges and delicate areas. Avoid using excessive pressure near seams, vents, or flashing to prevent water infiltration.

5. Should I hire a professional to clean my metal roof with a pressure washer?

  • Hiring a professional is advisable for ensuring thorough cleaning and preventing potential damage. Professionals have the expertise to use pressure washers safely and effectively on metal roofs.