What Is the Best Paint for an Old Metal Roof

Whether you've recently purchased a house with a metal roof or desire to update the color of your existing roof for the sake of visual appeal and energy efficiency, Painting the metal roof directly is the most natural option in terms of time, money, and commitment to an eco-friendly lifestyle. 

Yes, you can paint a metal roof. However, if you want to alter the color of an already-installed metal roof, you must do it correctly. Here's everything you need to know.

Old and slowly degrading green metal roofing with a vent on top, What Is the Best Paint for an Old Metal Roof

When is it safe to paint a metal roof?

Repainting metal roofing, regardless of type, is acceptable. Zinc is one of the most durable roofing materials available. However, it's important to note that metal roofs installed recently should not be replaced for at least six months since they need time to weather.

You must prepare a metal roof for painting before you start by removing mildew, dirt, and any loose paint that may remain from the previous paint job. The easiest way to clean your chimney is with a jet power wash, which can be done in just a few minutes. 

When you wish to repaint an existing metal roof for the first time, a diluted vinegar solution may be used to remove any old paint oils and residue.

Work out rusted metal roofing

How to Repaint a Metal Roof

You'll need to use the correct procedures to paint a metal roof following power washing it. The ideal paint for the job should be selected first and foremost.

Acrylic latex paint is excellent for bare metal roofs or covering existing paint coats. A good choice for many homeowners is a combination of oil-based alkyd paint and a galvanized metal primer, which ensures that the paint firmly adheres. With so many brands to choose from, finding the appropriate paint is essential. You may search for these and many other qualities that influence the performance of your sunscreen: water resistance, fire resistance, insect repellent abilities, and UV reflection.

Spraying a metal roof is straightforward. To spray high or steeply pitched metal roofs, you can use a sprayer. Alternatively, rollers and paintbrushes that are intended for corrugated metal are also effective at providing rapid coverage. It is simple to apply a few coats; however, you can usually tell for yourself.

If all else fails, or you're concerned about safety (you should wear a harness and non-slip shoes), you may always outsource the task to a professional.

Read more: What’s The Best Paint For a Roof

Maintenance Tips

Another advantage of metal roofs is that they require little upkeep. This is another reason why people are drawn to this substance. Nonetheless, a few minor repairs can help your roof last for many years.

It is recommended that you clean your roof once every six months with a mild detergent. Cleaners smooth and polish the surface of your car before allowing anything to damage it. They remove debris and grime so that they don't have a chance to get into the paint or start corroding the metal. The device also allows you to discover and treat any early indications of damage, such as bald patches or other warning signs.

After the repairs are finished, you may still want to repaint the roof every year to keep it looking new, but you won't have to worry about replacing it anymore. That's great.

Can you paint an old metal roof?

Old and rusted metal roofing

Sure, you can paint an old metal roof. It just might need to be repainted more often than usual.

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You might be interested in: What Is The Best Paint For A Corrugated Metal Roof

What kind of paint should I use to paint a metal roof?

The best paint for a metal roof is 100% acrylic latex enamel. Acrylics block out moisture and provide a great surface to hold on to, plus they can be applied on hot or cold surfaces. They are durable, the most affordable of the paints you will find designed specifically for metal roofs, and they come in nearly any color imaginable.

A tall brick chimney and worn out rusted metal roofing

If you want a more natural-looking finish, make sure to add some sort of sheen to it. Flat or matte finishes tend to show more scratches while glossier coats reflect light better and help hide imperfections that may appear over time with wear & tear.

Emulsion paints should never be used on a metal roof because emulsions contain water which basically turns your roof into a ticking time bomb.

How do you prep an old metal roof for painting??

A small old building with cream painted sidings and a work out red metal roofing

Before you can paint your metal roof, it's important to take the necessary steps to ensure the best possible finish. If you don't properly prepare an old metal roof for painting, you may find yourself needing to do extensive touch-ups later on — and we all know how much fun that is. So before even thinking about buying a spray gun and some fresh paint, remove any dirt and debris from the metal roof using a pressure washer. Once the surface is clean and dry, lightly scuff up any loose or peeling paint with medium-grit sandpaper or steel wool to create a key for those beautiful new coats of paint.

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