A substantial upgrade to a molded, solid-core passage door that replaces a thin, hollow-core interior door is a notable improvement. The solid door looks and operates better and reduces the transmission of sound. And a molded door can create a quieter, more peaceful place by eliminating the noisy hum of a dishwasher, the drumbeat from a stereo system or any other unwanted sounds in a nearby room.
A carpenter will charge $640, including labor and material, to remove a standard sized interior door and replace it with a new sound-deadening molded door. Assuming you have carpentry skills and tools, you can buy the door, hinges and lockset for $200, replace it yourself and save 69 percent.
