Roofs serve a very important protective purpose. But they also influence the look of a home.
Your clients want a roof that excels at both. They want practical and curb appeal. If you can deliver both, you are golden. If you can do it for a wallet-friendly price, even better.
In your quest to achieve these outcomes, you might run into a dilemma. Can you paint a metal roof? And if so, what’s the best way to go about it?
This guide is here to help. We’ll explore the benefits of painting metal roofs. Then, we’ll share our top nine pro tips on doing a five-star job.
Next, we’ll answer your burning questions. What type of paint is best? What materials do you need? And how long will the paint last?
To finish, we’ll share our must-know takeaway tips. Implement these the next time you’re up there painting a metal roof.
Let’s make sure you get exceptional results every time!
What Are the Benefits of Painting a Metal Roof?
You’re a professional roofer, and what you deliver is excellent, long-lasting value. The work you do protects homes and properties—assets that are some of the most costly investments your clients make in their lifetimes.
The better you can articulate this value, the more business you can win. So, what exactly should you include in your sales pitch for painting a metal roof? Try these benefits.
Increased Energy Efficiency
Did you know that the color of a roof can impact the temperature inside the property?
Reflective colors—think light, bright, and white—reduce heat absorption. The home stays cooler in summer.
The opposite is true, too. Darker colors increase heat absorption.
Your customers spend less on heating and cooling, which is a huge win with electricity costs on the up and up.
Improved Aesthetic Appeal
The roof is the finishing touch on a property. It completes the look. This means a rusted or chipping metal roof can really detract from the beauty of a home.
If your client is a homeowner looking to boost the appearance of their house, suggest a color refresh. It’s a quick and relatively cost-friendly way to achieve an impactful visual upgrade.
Protection Against Rust and Weather Damage
Metal roofs are prone to rust. Over years and years, they might even corrode—especially in harsh or extreme climates.
Painting a metal roof adds a protective layer. It seals the surface, which can help prevent or reduce rusting. It also protects against rain, snow, and UV exposure.
Extended Roof Lifespan
A lick of paint can help a roof last longer. As we mentioned, the paint acts like a barrier, safeguarding the surface from the elements and general wear and tear.
Your clients spend less on repairs and postpone the need for replacement. It saves them money in the long run. This is a convincing selling point to mention in your sales discussions.
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The 9 Best Tips for Painting a Metal Roof for Pros
Can you paint a metal roof? Yes, you know that much now. You’ve even won over your customers by sharing all the beneficial outcomes they can expect.
Now, it’s up to you to deliver. How can you make sure your service is as good as it can be? What steps should you follow? How can you improve your technique?
Follow the tips below and make every metal roof you paint durable and great to look at.
Tip 1: Clean the Roof
Never, ever start painting without first giving the roof a very thorough clean.
Dirt, mold, mildew, and loose paint can affect how well the new paint sticks to the surface. Ideally, use a pressure washer to remove grime. It should make short work of peeling paint, too.
For extra stubborn stains, apply a mix of water and a biodegradable cleaner. Then, rinse well.
Don’t move on to the next step without giving the roof ample time to dry.
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Tip 2: Remove Rust and Sand the Surface
Metal roofs do tend to rust over the years. You want to remove any rust spots with sandpaper or a wire brush before you paint. Otherwise, your paint could be uneven and prone to peeling.
Just make sure you remove any loose debris after sanding.
Dealing with hard-to-remove or extensive rust? You might need a rust-inhibiting primer.
Tip 3: Use a High-Quality Metal Primer
Always prime before painting. Select a quality primer that’s engineered for metal roofs. This can help prevent rust and ensure the paint adheres.
A good primer can ward off corrosion—even in humid or rainy regions.
Apply the primer evenly and thinly. Let it dry before you paint. Follow the manufacturer’s instructions carefully.
Tip 4: Choose the Right Paint
Choosing the right paint for a metal roof is like selecting the perfect outfit for a special occasion. It’s got to be functional and practical. It’s got to be appropriate. And it’s got to look great.
You wouldn’t choose a winter coat in mid-July. In the same way, make sure you choose paint that matches the environment and condition of the roof.
You can use either acrylic or oil-based paint as long as it’s meant for metal roofing. Make sure the paint is compatible with the primer you’ve used.
Tip 5: Check the Weather Conditions
Timing is critical when painting a metal roof.
Avoid painting on extremely hot or humid days, as this can affect how well the paint adheres. Mild temperatures—between 50 °F and 85 °F—are ideal.
Also, see if there’s rain in the forecast. You want dry conditions for between 24 and 48 hours after painting.
Tip 6: Use a Paint Sprayer for Even Application
Sure, you can use a brush or roller. But for an even application, nothing beats a paint sprayer.
Sprayers cover large areas in record time. You achieve a smooth finish without unsightly brush marks.
Tip 7: Pay Attention to Seams and Fasteners
Seams, joints, and fasteners can be tricky areas to paint.
You might want to apply a rust-inhibiting sealant to these areas. They are prone to moisture buildup and corrosion.
Tip 8: Apply Multiple Coats
One coat of paint won’t be enough for a metal roof.
Apply several thin coats, allowing the paint to dry in between. This is a more effective approach than slapping on one thick coat. You’ll get better coverage and a longer-lasting finish.
It does, however, take a bit more time. Each coat of paint must be fully dry before the next is added.
Tip 9: Repair Damage Before Painting
Before you start painting, inspect the roof for damage. Look for cracks, dents, or loose panels that need repair.
Fix up these issues first—this will help the paint job last longer. Skipping this step can lead to premature paint failure or even more damage to the roof.
FAQ for Pros Painting a Metal Roof
We’ve gathered up all the common questions pros like you ask about painting metal roofs. Here are the answers.
Can you paint a metal roof, and how long does it last?
Yes. You certainly can paint a metal roof.
With good technique and the right materials, the paint can last around a decade. The lifespan will depend on the weather conditions and whether the surface is maintained over time.
What types of paint are best for metal roofs?
Acrylic latex paint and oil-based alkyd paint are both excellent choices. You’ll also want to choose a paint made for outdoor use. It should offer strong UV protection.
How often should a metal roof be repainted?
A metal roof should be repainted every five to 15 years. The exact timeline depends on a few different factors:
- The quality of the previous paint job
- The local climate
- How much wear the roof experiences
- Whether or not there’s regular maintenance
What is the best way to prepare a metal roof for painting?
Clean the roof to remove dirt, dust, and old paint. You might need a pressure washer to get rid of debris and mold.
Sand the surface to help the paint adhere. Then, apply a purpose-built primer.
Do you need to prime a metal roof before painting?
Yes. Priming is a non-negotiable. A primer prevents rust and helps the paint adhere.
How long should you wait between coats of paint on a metal roof?
You should wait 24-48 hours between coats. You might need to wait longer in humid or wet weather. Applying the second coat too early can result in peeling or uneven coverage.
Always check the product label for drying times.
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Top Pro Tips for Painting a Metal Roof
Help your clients see the value of a high-quality paint job on a metal roof by discussing the benefits. Then, do a job so good they can’t help but rave to friends and family. Follow these tips to make sure of it:
- Choose quality paint. Always use high-quality, weather-resistant paint. It should be the kind made for metal roofs with built-in UV protection.
- Incorporate measurement technology. No matter the size of the job, accurate measurements ensure you have enough primer and paint to complete it. RoofSnap’s metal roof measurement tool offers a free trial and one free measuring report. See how remote measuring can help your business.
- Clean the roof first. Dirt and dust can cause paint to bubble, blister, and peel. Thoroughly clean the roof before you paint for an even and durable finish.
- Use the right primer. If you see rust spots on the roof, consider using a resistant primer. This can help the finished paintwork last longer.
- Apply thin coats. Don’t be tempted to use thick coats just to get the color more vibrant. Be patient and use thin, even coats. Allow them to dry fully before you move on.