How To Paint Rusted Metal Roof For Long Lasting Results

A close-up view of a rusted metal roof with significant rust spots under a clear blue sky. The text overlay reads 'How To Paint Rusted Metal Roof For Long Lasting Results'.

Got a rusty roof bringing your house down (aesthetically speaking)? No sweat! A fresh coat of paint can work wonders, giving your roof a makeover and some extra muscle against the elements. But before you grab a brush, here’s the thing: learning how to paint a rusted metal roof the right way can make all the difference. With the right prep and paint, you can DIY this project and give your roof a new lease on life!

Should you paint a rusted metal roof?

Painting a rusty roof is a great way to:

  • Shield your roof: Paint is like armour for your roof, keeping rust and nastiness at bay.
  • Insta-upgrade for your house: A shiny roof makes your place look sharp from the sidewalk. Big boost for curb appeal!
  • Live long and prosper, roof! Giving your roof some love with paint can add years to its lifespan, saving you money in the long run.

Word to the wise: If your roof is super rusty and falling apart, a whole new roof might be needed. But for most roofs, a fresh coat of paint can make a big difference!

How much rust removal is necessary before painting? 

You don’t need a showroom-perfect finish before painting. But it’s important to get rid of any loose rust and flakey bits that can stop the paint from sticking properly. Here’s a handy guide:

  • Light surface rust: A good clean and a scrub with a wire brush should do the trick.
  • Moderate rust: Grab your wire brush or scraper and say goodbye to loose rust and flaking paint.
  • Heavy rust: For seriously pitted or rusted areas, a rust converter can be your friend. This magic potion chemically changes the rust into a surface that paint can stick to.

What tools do you need to properly prepare rusted metal for paint? 

Here’s a basic kit to get your rusted metal roof ready for its paint makeover:

  • Safety: Gloves, safety glasses, and a respirator (if you’re using a rust converter).
  • Drop cloths: Catch those paint drips and protect your surroundings.
  • Tarp (optional): Working on a steep roof? A tarp can catch any falling debris.
  • Stiff wire brush: Your weapon against loose rust and grime.
  • Scraper (optional): Stubborn rust? This can help scrape it away.
  • Leaf blower (optional): Makes cleaning up debris a breeze.
  • Sandpaper (optional): Smooth out any stubborn areas after scraping.
  • Rust converter (optional): For heavily rusted areas.

How do you clean a rusted metal roof before painting? 

Hold up! Before you unleash the paintbrush on your roof, it needs a good scrub. Here’s how to get that sparkling clean, using some roof cleaning methods:

Person cleaning a rusted metal roof with a pressure washer on a sunny day, preparing the surface for painting. This image illustrates the step-by-step process of how to paint a rusted metal roof.

  1. Safety first! Gear up with gloves, glasses, and a respirator if you’re using a rust converter.
  2. Clear the area: Move any furniture or plants that could get caught in the painty crossfire.
  3. Sweep and blow: Time to give your roof a good sweep and blow. Get rid of all those leaves, dirt, and anything else that’s been chilling up there.
  4. Buff it out: Grab your trusty wire brush and scraper to say goodbye to any loose rust or flaking paint. Think of it as giving your roof a good scrub.
  5. Degrease it: Use some Trisodium Phosphate TSP solution or metal degreaser to get rid of that grime.
  6. Neutralise it (optional): If you use a rust converter, follow the instructions to neutralise the surface before painting.

How do you choose the right paint for a rusty roof? 

Not all paint is your hero! When it comes to fighting rust on your roof, you gotta pick the right weapon:

  • Rust-busting primer: Get a primer specifically designed for rusty metal. This will help the paint stick better and give your roof extra rust protection.
  • Paint type: Choose an exterior-grade, rust-resistant paint specifically formulated for metal roofs. Look for labels like “metal roof paint” or “enamel paint.” 
  • Colour choice: Lighter colours reflect heat better, keeping your house cooler. Darker colours might hide minor imperfections more easily.

How do you apply paint for long-lasting results on rusted metal?

Alrighty, roof ready to rock? Here’s the painting plan:

  1. Prime time: Apply a generous coat of rust-inhibiting primer using a roller or brush. Follow the drying instructions on the can.
  2. Painting power: Grab your fancy brush or roller and give your roof two thin coats of that awesome paint. Remember, let each layer dry totally before adding another.
  3. Clean up crew: Dispose of paint rags and debris responsibly.

What are some tips to prevent rust after painting rusted metal? 

Here are some tips to keep your newly painted roof looking its best and prevent future rust:

The image shows a close-up of a house with a metal roof that appears well-maintained and rust-free, set against a clear blue sky. The roof features neat, dark-colored metal tiles, and the house exterior is constructed with orange bricks. The image highlights the clean and modern aesthetic of a metal roof, offering a visual guide for those looking to learn "How To Paint Rusted Metal Roof" effectively.

  • Regular check-ups: Once a year, take a peek up there to see if any rust is brewing. A quick touch-up now can save you a bigger mess later and prevent metal roof corrosion.
  • Trim those trees: Those branches hanging over your roof are trapping leaves and moisture, basically creating a rust magnet. Give your roof some breathing room by trimming those branches back.
  • Gutter duty: Clogged gutters are like a party for rust – water just sits there and gets all friendly with your roof. Clean those gutters out and keep the water flowing freely.


So there you have it! With a little work and the right paint, you can transform your roof. It’ll look amazing, and that fresh coat will keep it going strong for years to come – saving you some serious cash in the long run.

Roof woes got you down? We can help!

Painting your roof yourself can be awesome, but let’s be real. Heights aren’t everyone’s cup of tea, and weekends are for chilling, not battling rust with a paintbrush. That’s where High Class Roofing comes in!

We’ve got the skills, the gear, and the know-how to make your roof gleam, without you needing to climb a wobbly ladder. Plus, we can handle any rust situation, from a little redness to a total rusty disaster.

Need a stress-free solution to your rusty roof? Give the High Class Roofing team a shout. We’ll tackle everything, leaving you with a roof that’s both rust-free and the envy of the block.