Can you repaint a metal roof?

So, the question is, can you paint a metal roof? The short answer is yes, you can, but there are several things you must consider before moving forward with your project.

Metal roofs are designed to last you up to 50 years. Many styles, colors and neighborhoods change over 50 years and there might be a point in your life where you want to update the color of your metal roof.

The first thing you need to check is the current warranty. If you have a warranty on the painted metal panel and decide to paint over the roof, it will void the warranty.

In regards to actually painting your roof, the preparation is an important step that must be completed. You will need to power wash your roof with a pressure of 2,500 pounds per square inch. Power washing removes mold, mildew and old paint which can interfere with paint adhesion.

You can use acrylic latex paint or oil-based alkyd paint; just make sure you buy one that is specifically designed to paint a metal roof.


Painting metal roof

Painted metal roofs come with a baked-on factory finish. To ensure that the paint will stick to the previous finish, you must prime the surface.  No matter what type of final coating of paint, a primer will ensure that rust will not creep through, and that the paint will stick.

When applying the paint, you will need specialty brushes or rollers. Use a roller designed for corrugated panels and a regular paint roller for standing seam panels.

For all types of metal, you can also use an airless paint sprayer to apply a clean, even coating of paint that will go on well. A sprayer will also get the job done in a fraction of the time and use less paint as well.

Steep roofs will need extension wands, and make sure you pay attention to the weather forecast before painting. Follow all safety guidelines when getting up on a roof.

Once you have completed your painting, there is still maintenance that needs to be completed to making sure your roof remains in great condition. Periodically clean the roof with a mild cleaning solution using a soft brush or a gentle pressure washer.

In addition, keep leaves and vegetation from collecting and rotting on the surface as this can promote rusting. Reseal and repaint over any dings or scratches that go through the paint to prevent corrosion.

About Metal Sales

Metal Sales Manufacturing Corporation is the premier nationwide provider of metal panels for the construction industry. Metal Sales works with architectural specifiers and commercial construction professionals to create inspirational design solutions. With the industry’s largest and most knowledgeable sales and technical support team, Metal Sales has the expertise to address today’s challenges in high-performance, sustainable and Net-Zero building. Metal Sales has outreach around the world. Delivering outstanding roof, wall and fascia metal panels from its 21 facilities throughout the U.S.

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