Can You Paint a Metal Roof? Everything You Need to Know
Metal roofs have increased in popularity in recent years. While they tend to be more expensive than traditional asphalt shingles, they can last twice as long (or longer!).
Many people wonder, "Can you paint a metal roof?" The short answer is, yes. However, there are many factors to take into consideration.
This article covers what those are, along with some metal roof painting tips, instructions, and maintenance advice. Keep reading to learn more.
What Types of Metal Can You Paint?
One of the main advantages of having a metal roof is that you can paint it. That is not the case with many other roofing materials, like asphalt shingles and terra-cotta. You can also paint a metal roof for many different reasons.
There are different types of metal roof materials. Common ones include:
- Steel
- Aluminum
- Copper
- Zinc
There are also variations, such as stainless steel and a galvanized metal roof, which is steel with a zinc coating. In general, all these metals are suitable for painting.
One thing to keep in mind is that it is harder to paint a brand-new metal roof than an older one. Allowing a roof to age at least six months will weather it a bit, which can help the paint adhere.
Benefits of Painting Metal Roofs
There are several scenarios where painting a metal roof may be warranted. These include:
- Discoloration
- Change of appearance
- Improved energy efficiency
- Protection against corrosion
Some metal materials can change color over time. For instance, copper and zinc develop a patina over time. While many people prefer the greenish hue, if a homeowner does not, then painting over it is an option. You also might choose to repaint a faded metal roof.
There are an infinite number of metal roof colors you can choose from. Some popular options include:
- Gray
- Brown
- Black
- Green
- Red
- Blue
Darker shades can produce a more natural, classic feel, while bold colors can be vibrant and eye-catching on the right building. A professional roofer can make recommendations based on the color and style of your home.
One of the most basic reasons that someone would paint a metal roof is to change its appearance. Perhaps you have recently painted your home, done renovations that changed the style, or simply want a new look. Painting your metal roof allows you to select a color and finish to match your home's aesthetic.
Another reason to paint a roof is to improve energy efficiency. Metal roofs are already pretty good at reflecting solar heat, but special paints can take things to the next level. Some are specifically designed to reflect sunlight and reduce heat absorption, which can dramatically lower your home's cooling costs.
A final reason to paint a metal roof is to give it an added layer of protection. Most metal roofs are resistant to rust and corrosion, but not completely impervious. Adding a coat of paint can help protect the metal and extend the lifespan of your roof.
How to Paint Metal Roofs
Prioritize safety when working on a roof. Painters should use appropriate safety gear, including harnesses and fall protection equipment.
Metal roofs are often slick and difficult to stand on. For this reason, you should consider allowing professionals to tackle the painting project.
In addition to ensuring safety, this has the advantage of guaranteeing proper completion of the project. They also will be aware of any local regulations regarding metal roof painting.
The first step in painting a metal roof is to prepare the surface. This involves property cleaning to remove dirt, debris, mold, or any loose paint from previous applications.
Next, you should address any rust or corrosion, including removing flaking or chipped parts. If necessary, replace or repair these sections of the roof.
Once the roof is clean and dry, apply a primer. Be sure to use one that is specifically designed for metal roofs.
Next, apply high-quality exterior paint, also formulated for metal roofs. It is important to choose a paint that offers the attributes you require. Common examples include:
- Water resistance
- Fire resistance
- Insect repellant
- UV reflection
With so many available metal roof paint types, it can be difficult to select the right one. Acrylic latex paint works well on bare metal roofs, as well as for painting over old paint coats. The combination of oil-based alkyd paint and a galvanized metal primer is another good option, as it provides superior adherence.
Follow the manufacturer's instructions and be sure that the paint goes on evenly across the entire surface (most technicians use a sprayer). Some paints come with energy efficiency qualities, but you can also find "cool roof coatings" that add another layer of reflectivity.
Painted Metal Roof Maintenance
A painted metal roof involves slightly more attention than a bare metal one, but doing so is not arduous. The biggest threat to paint is dirt, dust, and grime that has accumulated. Painted metal roofs also may be a little more susceptible to mold and mildew (although a high-quality paint usually has ingredients that repel it).
Regardless, the best thing to do to maintain a painted metal roof is to wash it every six months. Pure water may suffice, but using a gentle detergent is even better. (Pro tip: if you regularly have your gutters cleaned, combine this with roof washing.)
Doing so removes any contaminants before they have a chance to penetrate the paint or make the metal start to rust. It also gives you the opportunity to identify and treat any spots where the paint has become worn or damaged.
Learn More About Metal Roof Painting
Now that you know how to paint a metal roof and the different advantages it affords, you can decide if it is right for you. An experienced roofing contractor can further advise you on the process.
Austin Roofing and Construction has been providing the highest caliber residential and commercial roofing services for three generations. We pride ourselves on using only the best materials, and our team of installers has decades of cumulative roof installation experience. Contact us today for a free estimate.
