Wear safety glasses and use a putty knife to remove any molding or baseboards around the perimeter of the damaged area.
Replacing floor molding.
Miter the corners as with the base molding.
It s better to apply too much than too little.
Remove the old molding carefully.
Measure the length of the molding to be replaced and its height and thickness.
How to replace baseboard molding tools.
Nail it at an angle so that the nail goes downward into the wood.
The nails won t hold if they re driven straight into the polystyrene molding.
Snap the new board into place by putting the tongue into.
If your wood filler is water based use a wet finger to smooth the wood filler.
If it isn t already broken don t break it.
Cut the base shoe a quarter round molding that goes at the bottom of the base molding to length and attach it with a finish nailer.
When the filler dries you will be able to sand it even with the molding.
Allow the filler to dry for 24 hours.
Buying the new molding.
Pry up the boards starting at the wall until you get to the damaged ones.
Replace them one by one as needed.