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How to Clean a Metal Roof

How to Clean a Metal Roof

You may start cleaning your metal roof once you’ve double-checked that you’ve followed all of the safety procedures. Sticks, leaves, and other objects may be used in this way. Water will then eliminate the majority of the dirt and dust. Specifically, if a power washer is used to spray a metal roof too closely, it might damage it. Then, using a sponge, microfiber cloth, or soft-bristle brush, apply the solution to your metal roof and wait 5-10 minutes for it to dry.

Finally, use plain water to completely rinse the solution. If your metal roof has stains like rust or algae, a detergent-and-water solution may not be enough to remove them. Before using any other cleaning products, we strongly advise contacting our staff since they may permanently harm your metal panels.

Cleaning a Metal Roof

While cleaning metal roofing, there are a few more things to bear in mind:

• Metal panels will reflect the light on bright days, creating a glare that may impair your eyesight. Of course, your metal roof will become wet once you start cleaning it, but you should avoid doing it on a wet, rainy day to prevent slipping and falling.

• Only clean what you can reach – Before dragging up cleaning equipment and materials, check to determine how far up your roof you can reach sections that need more attention. Hoses will expand your reach, but if there are locations that are dangerously out of reach, it is preferable not to brush them by hand.

• With items like scrubbers, you’ll end up scratching and damaging your panels. At all costs, avoid them.

• Call a expert, they’ll take care of the task while you relax. With most metal roofs, a thorough cleaning isn’t necessary every year. They’re low-maintenance because of their high-performance capabilities. Depending on your climate, we suggest that you thoroughly clean your roof every 2-3 years to keep it looking its best. You should, however, do basic inspections on your roof many times a year to ensure that it is performing at its optimum. Check for debris, defects, and other issues that might shorten the life of your metal roof.

What can I do to keep my metal roof from becoming mouldy?

If you’re concerned about mold’s impact on your roof, hiring a professional roofing contractor may assist.

What can I spray on my metal roof to clean it?

Using a sponge, microfiber cloth, or soft-bristle brush, apply the solution to your metal roof and wait 5-10 minutes for it to dry.

Is it possible that bleach will damage a metal roof?

Clean the panels completely with clean water as you clean them. If you leave a solution on for too long, it might form a film or cause harm if you’re using bleach. To help remove dirt and debris off metal roofing, you may use a low-pressure spray washer.

What’s the best way to clean a metal roof using a pressure washer?

A 40-degree tip is recommended. It removes algae, mildew, mould, and other particles quickly and effectively when applied to a flat tip. Cleaning a metal roof doesn’t need a lot of pressure, and we advise against using more than is necessary to avoid damaging the roof.

Can you clean a metal roof with vinegar?

Allow for an hour of drying time after spraying the roof with the diluted liquid. Then scrape the discoloration off the roof with a soft-bristled scrub brush before rinsing with clean water.

Why Is It Necessary to Clean Metal Roofing?

1.  Helps a metal roof last longer

Regular cleaning will help it last longer, just like any other home or outdoor item. Fortunately, paint systems like PVDF are long-lasting and resilient, but they still need to be cleaned on a regular basis to maintain the resin’s and coating’s strength.

2.  Removes debris from the surface of the roof

The following items are common components that may get trapped on a metal roof:

• Pollen

• Spore occurrence

• Stains caused by moisture

• Airborne pollutants

• Rainfall that contains acid

• Stains from rust

3. Metal roof’s exterior

Nobody likes a filthy or ugly roof, particularly one that cost a lot of money. To put it another way, you want it to last as long as possible. Once a year, a simple cleaning can help avoid dirt and other obvious factors from making your roof seem unclean, mouldy, or discoloured to the human sight.

Cleaning Products for Metal Roofs

Plain Water

Water from a hose may wash dirt, dust, and other low-grade particles off a roof. Use enough water as you require completing the task.


That’s the cleansing product which most persons use to cleanse their roofing system since it is non-invasive and easy to use. This group includes moderate liquid detergent, car wash detergent, light dishwashing, and hot or cold marketing cleaning products.

1. Combine 1/4 cup detergent (5 percent detergent solution) and 1 gallon water in a mixing bowl.

2. Using a sponge or a washcloth, apply solution to surface.

3. Set aside for 5–10 minutes to allow flavours to meld.

4. Using normal water, thoroughly clean the surface.


Liquids can be used to clean non-water items that interact with the Poly (vinylidene roofing, including such oils, paints, grime, asphalt, and even some artwork. Solvents should only be used to clean the roof’s afflicted areas, not the whole thing. Always refer to the product’s label for cleaning instructions and follow them.

Among the cleaners in this category are:

• Alcohol for rubbing (Isopropyl)

• Spirits mineral

VM&P Naphtha is a brand of naphtha manufactured by VM&P.

Because most of these cleaners are hazardous, always remember to wear protective gear, wear eye protection, and keep the area well ventilated while working with this category. Because these chemicals are flammable, turn them hidden from sparking and fire hazards.