Metal roof is a preferable choice for many people because it’s cheap and long-lasting. However, that doesn’t mean you cannot improve its appearance and protection. Painting is one of the best choices.
So can you paint a metal roof, and how exactly can you do it without messing things up? Follow us to find out pro tips to get your metal roof painted perfectly.
The answer is: Definitely yes! In fact, since all types of metal roofs can be repainted, you can change the color of your roof anytime you want. Just one small note: If you have just installed your roof, you should wait at least 6 months before painting so that it can weather.
You also need to power-wash the roof to remove mildew, dirt, and any old paints left, whether your roof has been painted before or not. Otherwise, they can cause adhesion problems.
In case you don’t own a jet power wash, you can use a paint scraper and scrub your roof with water and trisodium phosphate.
For a completely new roof, you can wash it with weak acid, like diluted vinegar, to remove oil and residue first.
Although we had some instructions above that is not nearly enough. Here are other steps you should pay close attention to:
Let your roof dry
Do not paint it right away after cleaning. Let your roof rest for about one hour, then check whether it is already dry. If it’s still wet, check again after 15 minutes until the roof is dry.
You only need one coat of primer, but make it a thick one. After that, you let it sit for approximately an hour to dry completely.
Choose your paint
To choose the right paint, you can look into these categories:
Choosing the right paint will make this step easier. You can use any tools you have, but the most common ones are brushes and rollers specifically designed for corrugated metal. Another choice, if you have a high and steeped metal roof, is an airless sprayer. It can also paint more quickly and evenly. However, it can become useless on windy days.
After the first coat, let the paint dry. It might take about one hour, depending on different weather. Remember to check where you paint last, not the first place.
Afterward, apply at least another layer of paint. That would help you hit the spots you missed before. Keep adding layer after layer until the color looks dark or rich enough. Don’t forget to let the paint rest after each coating.
You should also pay extra care to your safety by doing 3 things below:
Metal roofs require minimal maintenance, but that doesn’t mean you can completely ignore yours. At least, you should clean your roof at least twice a year. Or else, the debris, dirt, and gunk can penetrate the paint and make the metal rusted.
Remember to use a gentle detergent. While cleaning, you can also check for any early signs of damage, bald spots, and other potential issues; or whether the painting is chipping, peeling, detaching from the roof or not.
Now you have known each step to keep your metal roof well-painted. But we still have some tips to perfect the painting layer.
Here is a video by Brian Yauger instructing us how to paint a rusted metal roof:
It depends on your roof’s type and your area. If your roof is made of bare metal or galvanized metal, acrylic latex paint is the most common choice. And oil-based paint goes best with terne metal roofs. You can also consider the weather in your region to choose the features of the paint: water resistance, fire resistance, UV reflection, insect repellent capabilities,…
And if your roof has been painted before, it would be best to get the new paint from the same brand. However, paint from different brands still does the work but you will need a coat of primer first.to assure adherence.
Normally, your metal roof needs to be repainted once every 10 years. Or else, the roof membrane will start breaking down and the coating can no longer protect the metal. Ignore it for too long and you’ll have to replace your roof.
Also, you’d better check your roof twice a year for any signs of damage or potential issues. Along with that, clean the metal roof with a gentle detergent to remove debris, dirt, and gunk.
Metal roofs are easily rusted when exposed to different elements. However, you can repaint your rusted roof to improve the appearance and prevent it from rusting further.