How to Fix Dented Wood Grain Aluminum Siding

Though it has largely been replaced by vinyl and other materials in new construction, aluminum siding is still present on many homes today. It is durable and protects the home against the elements, but aluminum siding is susceptible to denting. For smaller dents, you may be able to fix existing siding, but for more severe damage, you will need to replace entire courses of siding to make a repair that is consistent with the rest of the siding.

Small Repairs

Depending upon the extent of the damage, sections of aluminum siding can be repaired or replaced.

Step 1

Drill a hole with a 1/8-inch bit at the center of the dent.  For larger, or unevenly shaped dents, drill a series of holes along the deepest part of the dent.

Step 2

Thread a machine screw into each hole, leaving about ½-inch of the screw sticking out. 

Step 3

Grab each screw with pliers and pop sections of the dent out by pulling in a smooth, form motion until the dent is level with the surrounding siding.  Remove the screws.

Step 4

Sand the dented area to rough up the surface. 

Step 5

Apply automotive putty to the area with a drywall knife.  Fill the nail holes and build up any areas that may still not be flush with the surrounding surface.

Step 6

Allow the putty to dry completely and sand down the area again, removing any bumps or grooves in the putty. 

Step 7

Prime the damaged area, sand again and apply your finish coat.  Two or more coats may be necessary.

Panel Replacement

Step 1

Cut the top damaged panel from end to end along its length, just above its middle, using tin snips or a utility knife.  Remove the lower portion of the panel.

Step 2

Remove the panel beneath the top damaged panel by prying up the now exposed nails.  Continue removing panels, moving downward until all damaged panels have been removed.

Step 3

Install new panels starting at the bottom of the damaged area. 

Step 4

Cut the nailing hem off of what will become the top panel by scoring it with a utility knife and snapping it off. 

Step 5

Apply gutter sealant along the length of the damaged panel you cut when you started.  Install the last piece of siding into place.

Tuck its top under the course above, snap its bottom lock into place and apply gentle pressure so that it adheres to the gutter seal. 

Things You Will Need

  • Drill
  • 1/8-inch bit
  • Machine screws
  • Pliers
  • Sandpaper
  • Automotive putty
  • Drywall knife
  • Paint
  • Utility knife
  • Tin snips
  • Hammer
  • Gutter sealant

About the Author

Matt Brown has been writing professionally for more than 15 years. He shares his experience in home remodeling and do-it-yourself projects with his readers. Brown earned his bachelor of arts in communications from Marist College in Poughkeepsie, N.Y.

Photo Credits

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