Siding and gutters: How to paint metal exterior surfaces
Posted on July 12, 2022
Exterior metal presents a unique set of problems to homeowners. Metal outside your home is a necessity and you will need to protect it. You may be asking yourself, how do I paint metal exterior surfaces?
The exposed metal is subject to water and thus, rust. One way to counteract the potential breakdown of your outside metal is to paint it. This will provide a protective layer on top of the metal and potentially slow or halt the rust.
If you’re in need of some professional help to paint your metal siding, our professional painters at CertaPro Painters® of Renton offer metal siding painting services for all varieties of metal siding. Going with a professional might be worth your investment and time limiting little room for mistakes and providing you with those high-quality results that you’ve envisioned.
With that said, here are steps to painting your metal siding for both steel and aluminum that you will need to follow to give you that premium finish:
Steel
It’s important to keep water and air off of your steel. Here is how to create a protective barrier with paint on steel.
- To paint or repaint steel, run a wire brush over any areas where rust may be or has developed.
- Get a specialty primer from your local paint store. It will state on the can that it is rust-inhibitive. Applying two coats, with drying time in between, will create an extra strong protective layer.
- Apply your paint. It’s suggested to use 100% acrylic latex or oil-based paint.
Spraying: spray painting is a good option for steel. Follow all directions from the can. If it’s possible, remove the project and place it on a workbench where you have access to the sides for an even finish. Short, fluid strokes will provide a solid finish.
DTM Paints
Some paints are sold as a direct-to-metal or DTM paint. They are specially formulated for application on metal without a primer.
Aluminum and Aluminum Siding
Aluminum siding can chalk or wear down if you live in a harsh climate. Refresh your home without a full residing by painting exterior metal.
- Make sure the metal is clean and dry. Remove any dirt, grease or stains.
- Cover any nearby areas to avoid getting paint on it.
- Prime the metal with anti-rust primer. This will create a good surface for adhesion and prevent future rust breakouts. Allow full dry time.
- Use a rust-preventative enamel on top. Apply several thin coats and allow to dry completely.
Aluminum and aluminum siding can be painted with good results, but there are a few issues that can happen.
Chalking can happen when the coating is very weathered. If you run your fingers over a piece of your siding and it comes off white, you have chalking. Use a cleanser like trisodium phosphate before you start your project.
Finish suggestions for aluminum siding are to use a flat or satin finish paint. Since the aluminum is prone to dents, this paint will hide small imperfections. A glossy finish will accentuate dings.
Spraying: Since siding is not able to be removed for painting, be conscious of nearby items. Put down a tarp or drop cloth to protect nearby bushes, ground or plants. Take into account the wind and any overspray that may overreach your drop cloth.
Looking for a Professional Painter to Paint Your Metal or Aluminum Siding?
