Aluminum Siding Hail Dent Repair

Locate the center of the dent in the aluminum siding and mark the point with a piece of chalk.

Use the drill with an 1/8-inch bit to make a hole at the chalk point. Drill through the siding, but take care not to drill into the house cladding beneath.

Thread a machine screw into the hole until about half an inch of the screw remains sticking out from the hole. Use a screwdriver to thread the screw by turning the screw clockwise.

Take the screw head with a pair of pliers and pull it directly away from the house. The pressure from pulling the screw will pull the aluminum back into place, removing all but a small portion of the dent.

Remove the screw from the aluminum siding with the screwdriver by turning the screw counter-clockwise.

Fill the hole left by the screw in the siding with automotive putty. Spread the putty through the small dent left in the surface of the siding, leveling the dent with the rest of the siding surface. Allow the putty to dry for the length of time suggested by the manufacturer, until the surface hardens.

Sand the surface of the putty smooth and even with the aluminum siding.

Thin one gallon of primer paint with one pint of paint thinner and stir with a wooden stir stick. Brush on a coat of the thinned primer on the patched area. Let it dry for about two hours.

Brush two coats of exterior house paint the same color as the siding onto the patched area. Allow the paint to dry between coats for two hours. Allow the final coat to dry for 48 hours.