How to fill dents
1 of 3
Photo 1: Prepare the door
Scrub dirt off the door with detergent, then rinse and dry the area.
Lightly sand the dented area with 80-grit sandpaper to help the
patching compound bond, then wipe clean.
2 of 3
Photo 2: Fill the dent
Press patching compound
into the dent with a small
putty knife, then smooth and
feather out the edges as if
you're spreading drywall mud.
3 of 3
Photo 3: Sand smooth
Sand the area flat after the filler
dries using 120-grit sandpaper
wrapped around a flat block. Switch
to 150-grit sandpaper to smooth
out the edges of the patch.
Steel entry and service doors provide years of reliable service but will get
dinged and dented. Hiding the dents is just like taping and sanding drywall
except the patching material is a little thicker and tougher.
The easiest way to fill in the dents is with a premixed patching or glazing
compound designed for steel doors. It's available at home centers and hardware
stores. For a heavy-duty fix, use a two-part auto body
filler. It's available at auto parts stores.
Apply both fillers in the same manner. Prepare the surface of the door,
patch the dent and sand it smooth as shown in Photos 1 - 3 (deep dents
may require a second coat after the first one dries). Prime the patch and
repaint the entire door to hide all evidence of patching.