Although vinyl siding is highly durable, it is not unusual to have some impact damage to the siding on one of the exterior corners of the house. While the corners of vinyl siding are slightly more difficult to replace than the corners of other exterior finishing options, most homeowners should be able to do this work without outside help.
In order to replace the exterior corner of the vinyl siding, it is important to purchase a vinyl siding removal tool. This tool will allow you to pry apart the vinyl siding gently, preventing further accidental damage. Also, before beginning this project, take care to find vinyl siding that matches your home. Certain colors from specific manufacturers may have to be special ordered.
Step 1: Starting at the top, pry up each piece of vinyl siding that is adjacent to the exterior corner you will be replacing using your vinyl siding removal tool. Make sure that the seal between each piece of vinyl siding is detached at least 3 feet from the corner. Continue until both sides of the vinyl siding have been separated from each other and the corners.
TIP: Wear work gloves when working with vinyl siding to prevent cuts: vinyl siding can be very sharp, or still have burrs left over from the manufacturing process.
Step 2: Remove the nails that hold the vinyl siding using a nail bar or small pry bar. Continue removing nails until the same 3 foot distance from the corner of the vinyl siding is clear of nails.
Step 3: Remove the vinyl siding exterior corner piece with the nail bar or pry bar. Remove any pieces of broken vinyl as well.
Step 4: Put the new vinyl siding exterior corner piece over the boxing. Nail it into place with galvanized nails. Space the nails every 16 to 18 inches.
Step 5: Start reattaching the ends of the vinyl siding to the corner, sliding the end of the vinyl siding underneath the newly installed corner. Nail the first piece down, starting from the bottom. Then attach the next piece of vinyl siding so it snaps into the piece below. Nail down that piece after it has snapped into the vinyl siding piece.
Step 6: Continue nailing down and snapping together the pieces of vinyl siding that you detached in the previous steps, working from the bottom up.