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Painting Galvanized Metal That’s Rusted

painting galvanized metal, house painters, interior and exterior painting in Toronto

Painting Galvanized Metal That’s Rusted 

Galvanized metal is a commonly used metal for piping, building support beams, ducts for air conditioning and heating, handrails, barriers and even roofs. Because galvanized metal is so long-lasting it works well in areas that need to withstand extreme weather conditions.

In Toronto galvanized metal is mainly used for handrails and support beams around the exterior of your home. Although this type of steel is treated with zinc oxide to last in harsh climate changes over time the zinc oxide within the metal can wear away and begin to rust. If you are going to repair rusted galvanized metal you’ll need to act quickly before it spreads and becomes much more difficult to fix. So, keeping reading to learn about painting galvanized metal that has worn from age.

How to Prep Rusted Galvanized Metal for Painting

Materials That You Will Need to Prepare Rusted Galvanized Metal to be Painted

  • Rust Proof Primer (and paint bucket)
  • Vinegar
  • Sandpaper
  • Wire Brush/Electric Sander
  • Paint Brush
  • Rag
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1. Wipe, Sand and Scrape

  • Firstly, with your rag, wipe away any dust, dirt or debris from the galvanized metal so that you can have a clean area to work with.
  • If you want to give your galvanized metal a good cleaning with something non-toxic, white vinegar actually works really well. It’s the acidity of the vinegar that can actually help the paint to properly adhere to the galvanized metal later on.
  • Secondly, with your sandpaper or wire brush sand along the galvanized metal by vigorously sanding right to left along the entire length of the rusted metal. You want to take your time with it to be sure you sand away any loose paint and rust chips. You may choose to use an electric handheld sander to sand away the rust/loose paint – whichever you find easier. Make sure you end up with a smooth surface after sanding so it will be easier to proceed on to the next step.


  • The good thing about sanding the rusted galvanized metal is that you usually won’t come across any seriously rusted metal because the zinc oxide treatment prevents this from happening. So using sandpaper instead of a handheld sander is just as efficient.

2. Prime

  • Thirdly, using your metal primer and a paint brush, brush on the primer with 2 coats to seal and protect any future rust from reoccurring.
  • Tremclad Primer for Galvanized Metal is a good choice.
  • Allow to dry and you have properly prepped your rusted galvanized metal for painting!

3. Paint! 

  • Fourthly, it’s time to paint your galvanized metal.
  • When thinking about what type of paint will properly adhere to it, you want to go for an acrylic paint. You can try one of the oil based paints on the market, but often times the metal surface sheds the paint over time.
  • Once you have your paint, you can either use a brush or a roller to paint it on.
  • There are also lots of specialized spray paints that can be great for galvanized metal.

Don’t forget to visit our Pinterest page to get all the inspiration for exteriors!

More interesting blogs related to ” Painting Galvanized Metal That’s Rusted “:

  1. How To Pick Exterior Paint Colours  
  2. Painting The Garage: Everything You Need To Know
  3. The Best Time Of The Year To Paint The Exterior Of Your House
  4. Tips For Painting Wooden Exterior Trim 

In conclusion, preparing your old galvanized metal to be painted is a lot easier than you probably thought, right? Because of the durable properties of the material you will find that this is one of the easier D.I.Y projects for the exterior of your home. If you have a galvanized metal roof it will take more time to complete, but it still won’t be a difficult task to accomplish. If you don’t have the time to worry about this project yourself, give our home painting services a call! We’ve been in the business for over 30 years now. Our professional painters know what they’re doing every step of the way. Call us NOW at 416-494-9095 or email [email protected]!

Brian Young - Home Painters Toronto

From The Owner & Founder


Hello and welcome!

I’m both deeply honoured and flattered you are considering using our services.

Since 1987 when I was at York University simply earning my way through school, I’ve had the privilege to meet and work with thousands of amazing homeowners like yourself.

Besides the birth of my daughter, there is nothing more satisfying than seeing a homeowner’s life change when we have transformed their dream home into a masterpiece. For that reason, we take our jobs very seriously and are committed to our cause.

At Home Painters our mission is to paint homeowners’ dreams, and make your painting experience last a lifetime!
I look forward to hopefully meeting you one day, as it brings me tremendous joy to make homeowner’s dreams come true.