Over the years I have noticed that old, rusty foundation windows are often overlooked in the maintenance processes on people’s homes.
This may seem like a little detail but can add to a home looking worn out and neglected.
Not only that, but if these rusted foundation windows ever corrode to the ‘point of no return’, they are a bit of a pain in the neck to replace.
Fortunately, with the right treatment, you can restore these windows and make them look new again. Here’s a step-by-step guide on how to treat and paint old, rusty foundation windows…
1. Safety First
Before you start working on the windows, make sure to take safety precautions. Wear protective gear like gloves, safety goggles, and a dust mask. Rust and old paint can be harmful if inhaled or if it gets on your skin. Also, make sure the area is well-ventilated, especially if you’re using chemicals or paint.
2. Gather Your Materials
To treat and paint rusty windows, you’ll need the following materials:
– Wire brush or steel wool
– Sandpaper (medium and fine grit)
– Scraper or putty knife
– Rust inhibiting (I refer to this as a ‘rust oxide’) primer
– Proper exterior paint
– Paintbrushes or rollers
– Drop cloth or plastic sheeting
– Painter’s tape
– Paint thinner or mineral spirits
3. Prepare the Area
Start by preparing the area around the windows. Place a drop cloth or plastic sheeting under the windows to catch any debris or paint chips. Use painter’s tape to protect areas you don’t want to paint, such as the surrounding wall or trim.
4. Remove Loose Rust and Paint
Begin by using a wire brush or steel wool to scrub away loose rust and peeling paint from the window frames. Be thorough but take care not to damage the metal underneath. Scraping off as much rust and old paint as possible is important because it helps the new paint stick better. After using the wire brush, you can use medium-grit sandpaper to smooth the surface further and remove any remaining rust spots.
5. Sand the Surface
After removing the rust, use fine-grit sandpaper to smooth out the metal. Sanding will help create a smooth surface for the primer and paint to adhere to. Wipe down the windows with a clean, damp cloth afterward to remove any dust or debris left from sanding.
6. Apply Primer
Applying a primer is a crucial step in protecting your windows from future rust. Use a rust-inhibiting primer designed for metal surfaces (often noted on its can as ‘For Use On Heavily Rusted Metal’, or something along these lines). Apply a thin, even coat of primer using a paintbrush or roller, making sure to cover all areas of the window frame. Let the primer dry according to the manufacturer’s instructions before applying a second coat if necessary. The primer will help the paint adhere better and more importantly in this case provide an extra layer of protection against rust.
7. Paint the Window Frames
Once the primer is completely dry, you can start painting the window frames. Choose an exterior paint that is durable and suitable for metal. My ‘go-to’ product and color for these types of windows is ‘Rustoleum Gloss Smoke Gray’. Apply the paint in thin, even coats, allowing each coat to dry before applying the next. Depending on the paint you use, you may need two or three coats for the best coverage. Be sure to use smooth, even strokes to avoid drips or streaks.
8. Final Touches
After the paint has dried completely, remove the painter’s tape carefully. Check the windows for any spots you might have missed and touch them up if necessary. Clean up the area by removing the drop cloth and disposing of any debris properly.
9. Regular Maintenance
To keep your foundation windows looking good, regularly inspect them for signs of rust or damage. Touch up prep & paint as needed to prevent rust from taking over again. Regular maintenance will extend the life of your windows and keep them looking fresh.
By following these steps, you can successfully treat and paint old, rusty foundation windows, restoring them to their former glory and protecting them for years to come.
