How to Paint a Peeling Metal Garage Door

How to Paint a Peeling Metal Garage Door

A metal garage door that is peeling can make a home look worn and neglected. Exposure to weather, moisture, and UV rays can cause the paint to crack and flake over time. Painting a peeling metal garage door requires proper preparation to ensure a smooth, long-lasting finish. Following the right steps will help restore the door’s appearance while also providing protection against rust and corrosion.

Step 1: Remove the Peeling Paint

Before painting, all loose and flaking paint must be removed. A wire brush, paint scraper, or power sander can be used to strip away the peeling layers. Sanding the surface with medium-grit sandpaper helps to create a smooth base for the new paint. Any rust spots should be treated with a rust remover or sanded down to prevent further corrosion.

Step 2: Clean the Surface

Once the old paint is removed, the door should be thoroughly cleaned to remove dust, dirt, and grease. A mixture of warm water and mild detergent works well for this. For stubborn grime, a degreaser or pressure washer can be used. After cleaning, the door should be rinsed with clean water and left to dry completely.

Step 3: Apply a Primer

Priming is essential when painting a metal garage door, especially if the surface has been sanded or rust has been treated. A high-quality metal primer helps the paint adhere better and prevents rust from forming. It should be applied evenly using a roller or spray and left to dry according to the manufacturer’s instructions.

Step 4: Paint the Garage Door

Once the primer is dry, the garage door can be painted with a durable, weather-resistant metal paint. Using a paintbrush, roller, or spray, apply the first coat in thin, even layers. Allow it to dry completely before adding a second coat for better coverage and protection. Light sanding between coats can help achieve a smooth finish.

Step 5: Apply a Protective Sealant

To extend the lifespan of the paint job, a clear protective sealant can be applied after the final coat dries. This helps to protect the paint from chipping, fading, and weather damage.

Regular maintenance, such as cleaning the door and checking for signs of peeling, will help keep the paint looking fresh for longer. With proper preparation and the right materials, a metal garage door can be given a new lease of life with a professional-quality finish.