Patching Aluminum Siding

Aluminum siding is one of the most popular materials used to cover home exteriors. While it is an affordable and durable option, aluminum is susceptible to dents and dings and can require regular maintenance to keep it looking new. Replacing sections of siding is the most common way to patch significant damage, but this work must be done carefully to keep the finish looking smooth and consistent. This project can be completed by the average homeowner in just a few hours.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Two part epoxy filler
• Sand paper
• Paint
• Paint brush
• Utility knife
• Replacement siding pieces
• Adhesive caulk

1. Patch small holes. Use a two part epoxy filler to fill any holes that are under 2 inches in diameter. Apply the epoxy solution with a paint brush, and allow it to dry. Sand it once it has dried, then paint it to match the rest of the surface.

2. Repair larger sections by replacing the pieces of siding affected. Carefully cut away the damaged section using a utility knife. Keep your cut rectangular so that it is easy to patch, and leave 2 inches of the siding section still attached to the house so you have something to connect to.

3. Cut a new piece of siding that is 3 inches larger on each side than the piece you removed. You will have to cut the same piece several times, as aluminum siding can be difficult to cut.

4. Remove the nailing flange from the new pieces of siding by cutting them away with your utility knife.

5. Install the new piece of siding by sliding it under the row above and securing it with an adhesive caulk. This will seal the patch in place and keep it water-tight.

Tips & Warnings

• If you have a lot of areas that require patching, consider repainting the entire surface when you are finished. The paint on aluminum siding tends to fade over time, so it will be hard to get the patched areas to match exactly.