How To Clean a Metal Roof - The Ultimate Guide [2023]

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As a homeowner in El Paso, TX, you know that purchasing a metal roof is a big investment. Not only do metal roofs have a longer lifespan than other types of roofing materials, they are also highly durable and resistant to weather damage.

But if there’s one thing that can cause your metal roof to fail or need early replacement, it’s not properly cleaning it. In this article, we’ll dive into the importance of cleaning your painted metal roof, the best methods and tools to use, and what to avoid.

We’ll also discuss some important considerations to keep in mind before, during, and after cleaning to ensure that your metal roof stays in top condition for years to come.

Why a metal roof needs to be cleaned?

Here are the reasons a metal roof needs to be cleaned:

To prevent rust and corrosion

It’s important to clean your metal roof regularly to prevent rust and corrosion and keep your roof in top condition. If left unchecked, rust can weaken the structural integrity of your metal roof and lead to costly repairs down the line. (Yikes!) By removing any dirt or debris that may be stuck to the roof, you can help prevent rust from forming in the first place and avoid the need for metal roof restoration.

To improve the roof’s lifespan

In addition to preventing rust and improving the appearance of your metal roof, regular cleaning can also help extend its lifespan. By removing any build-up of dirt or debris, you can help prevent damage to the roof and potentially avoid costly repairs or replacements. By taking the time to clean your metal roof, you can enjoy all the benefits that a metal roof has to offer.

To maintain the roof’s appearance

Not only does cleaning your metal roof help with its functionality, it can also improve its appearance. A dirty metal roof can make your home look unkempt and diminish its curb appeal. By giving your metal roof a good cleaning, you can restore its shine and make your home look more attractive to potential buyers or guests.

Additionally, if you have metal roofing accessories such as flashing or gutters, it’s important to clean these as well to keep your roof looking its best.

To protect the roof from weather damage

Finally, cleaning your metal roof can also protect it from weather damage. For example, if there’s debris or leaves stuck to your metal roof, it can hold water and cause damage over time. By removing this debris, you can help prevent water damage and keep your metal roof in top shape. This is especially important if you’re trying to figure out how to find a roof leak – a clean roof is much easier to inspect for any issues.

All in all, cleaning your metal roof is a necessary task that can help prolong its lifespan, improve its appearance, and protect it from damage. Plus, who wouldn’t want a shiny, clean roof to show off? It’s a win-win situation.

How to Clean a Painted Metal Roof?

Are you wondering how to clean a painted metal roof? There are a few different methods that you can use, depending on what needs to be cleaned off of the roof and how severe the issue is.

Now, you don’t have to tackle cleaning your metal roof on your own – there are plenty of experienced roof cleaning services that you can hire to take care of the job safely. Contact Metal Roofing El Paso TX for this.

Just keep in mind that the following recommendations are specifically for use on Sherwin-Williams PVDF coated metal panels. If your metal roof has a different paint system, such as SMP or acrylic, you should check with the paint supplier or panel manufacturer first.

Now, let’s go through some best practices and common uses for cleaning a painted PVDF metal roof system. (But seriously, be careful up there!)

What are the best metal roof cleaning tools to use?

Wondering what tools you should use to clean your metal roof? Here are the best metal roof cleaning tools to use:


A washcloth can be great for wiping down smaller areas or for removing any dirt or debris that’s stuck to the roof.


A sponge can be useful for getting into crevices or for applying a cleaning solution. Just be sure to use a soft sponge to avoid damaging the roof.

Soft-bristled brush

A soft-bristled brush can be helpful for removing leaves or other debris that’s stuck to the roof. Just be gentle and avoid using a brush that’s too stiff or abrasive.

Non-abrasive pad

A non-abrasive pad can be a good option for removing tough stains or for scrubbing the roof. Just be careful not to use too much pressure and to avoid using pads that are too abrasive.

It’s worth noting that there are some instances where you might not need any cleaning tools at all – just a hose and some water can do the trick.

On the other hand, there may be times when you need to use a higher-powered cleaning agent and a tool to actually wipe or wash the panels. It just depends on the situation!

What are the best metal roof cleaning products?

Wondering what the best metal roof cleaning products are? Well, there are a few options to consider, depending on what you’re trying to clean off of your roof.

Plain Water

First up, we have plain old water. Yeah, you read that right. Sometimes, all you need to clean off dirt, dust, and other low-grade elements is a good hose-down. Just make sure to use as much water as you need to get the surface clean.


Next, we have detergents. These are usually the go-to cleaning solution for most people because they’re non-invasive and easy to use. This includes mild laundry detergents, car washing soap, mild dish soap, and cold or hot commercial/industrial detergents.

To use them, just mix 1/4 cup detergent (5% detergent solution) per gallon of water, apply the solution to the surface with a sponge or washcloth, let it sit for 5-10 minutes, and then thoroughly rinse with plain water.

Solvents & Petroleum Solvents

Finally, we have solvents and petroleum solvents. These are great for removing tougher elements that might come into contact with your PVDF-coated roof, such as oil, paint, grease, tar, and even some graffiti. 

Just keep in mind that these should only be used on affected spots on the roof and not the entire roof. And as always, make sure to read the recommended directions on the product’s label and use them accordingly. 

This class of cleaners includes rubbing alcohol, mineral spirits, and VM&P Naphtha. 

Just be aware that most of these cleaners are toxic, so you should wear protective clothing, use eye protection, and keep the area properly ventilated. And of course, keep these solvents away from sparks or open flames because they’re flammable.

What are some important considerations to keep in mind before, during, and after cleaning a metal roof?

Here are some important considerations to keep in mind before, during, and after cleaning a metal roof:

Wearing protective gear

Before you start cleaning your metal roof, it’s important to take some precautions to ensure your safety. One of the most important things to consider is wearing protective gear. This might include things like a hard hat, gloves, and protective eyewear. Trust us, you don’t want to take any chances when it comes to falling off a roof or getting hit by debris!

Starting at the top and working your way down

Another important consideration is starting at the top of the roof and working your way down. Not only will this help you avoid missing any spots, but it’ll also make the job a little easier on your body. Plus, it’ll help you avoid any accidents caused by working on a wet or slippery surface.

Checking for and repairing any damage before cleaning

Before you start cleaning, it’s also a good idea to check for and repair any damage on the roof. This might include things like loose shingles or damaged flashing. By taking care of these issues before you start cleaning, you can help prevent any further damage to the roof.

Following manufacturer’s instructions

Finally, make sure to follow the manufacturer’s instructions when cleaning your metal roof. Different products and methods may have different recommendations, so it’s important to pay attention to these to avoid causing any damage to your roof.


In conclusion, cleaning your metal roof is a crucial task that can help prolong its lifespan, improve its appearance, and protect it from damage. By using gentle, non-abrasive methods and tools, following manufacturer’s instructions, and keeping safety in mind, you can effectively clean your metal roof and keep it in top condition. Don’t neglect this important task – your roof (and your wallet) will thank you!