From the 1940s through the 1970s, builders commonly used metal siding, later replaced by other materials. Contrary to initial beliefs, prefinished metal siding does require painting, a misconception that time has debunked.
Painting prefinished metal siding is typically a job for a professional painter but can be done by a talented DIYer. It’s crucial to select the right type of primer and paint. I recommend using a 100% acrylic latex primer, as it offers excellent adhesion and flexibility, crucial for metal surfaces that contract and expand. For the topcoat, high-quality acrylic latex paint is ideal, preferably in a satin finish for its durability and weather-resistant properties. When applying paint, use a sprayer for uniform coverage, ensuring each coat is thin and even to prevent drips and uneven textures.
Drawing from my extensive experience in painting various types of siding, I’ve found that prefinished metal requires a unique approach. In one project, I encountered metal siding that had not been painted for decades. After a thorough cleaning to remove chalking and rust, I used a specialized metal primer to ensure strong adhesion. The key was multiple thin coats of a high-grade acrylic latex paint, applied with precision. This approach not only revitalized the appearance but also provided long-lasting protection against the elements.
Prep Work For Painting Metal Siding
Effective preparation is crucial for painting prefinished metal siding. Start by thoroughly cleaning the surface to eliminate chalking, rust, flaking paint, and debris, using a pressure washer or hand washing. After cleaning, inspect for any damage or warping that could affect paint adhesion. Dry the siding completely, then address any remaining rust or peeling by scraping or sanding. Spot prime exposed metal areas with a rust-inhibiting metal primer, ensuring the best possible adhesion. Conduct a small area test to confirm compatibility and desired results before proceeding with the full painting project.
Primer
You’ll want to start with a primer when painting prefinished metal siding. Choose a primer specifically made for the metal that you are painting. A paint specialist can certainly help with product selection. Primer is an important step for metal and aluminum. Some properties in latex paint can cause a chemical reaction when it comes in contact with oxidized aluminum. This reaction can create problems with adhesion and longevity. Make sure you do your research or ask a professional!
Good quality acrylic latex paint and appropriate primer are required when painting prefinished metal siding. Typically, it’s recommended to use a satin sheen paint. The satin sheen will maintain its appearance while protecting the metal for a longer period.
Application
Painting prefinished metal siding is best applied by spraying if you are experienced in using a paint sprayer. It can be difficult to get an even coat if using a roller. Give the siding two coats of paint either way.
Many believe applying paint with a sprayer is faster. The truth is, that both processes take about the same amount of time. The act of actual spraying does go faster, however, the prep work required for spraying takes much longer. They both even out in the end.
Expert Product Picks for Metal Siding Painting
When selecting products for painting prefinished metal siding, I always recommend specific brands that have proven effective in my experience. For primers, Zinsser Bulls Eye 1-2-3 offers excellent adhesion and rust prevention. For topcoats, Behr Premium Plus Ultra excels in durability and finish quality. Remember, choosing the right product is as crucial as the application method. For further assistance, I advise consulting with a paint specialist at your local hardware store to find the best fit for your project’s specific needs.
There is a lot to consider when painting prefinished metal siding. Make sure you have thoroughly educated yourself on the process if you plan to “DIY” it rather than hiring a professional painter.
