Solid wood doors are the best sound-insulating doors you can buy for the interior of your house. They have a warm, natural look and come in a variety of wood species to coordinate with your furnishings. Classic wood doors have the weight you can't find in solid core or hollow core fiberglass doors.

The average cost to install an interior door is $786 , or between $150 and $2,500 depending on the type of door, style, material, and hardware. The average cost to install an interior door is $786 , but your total can range between $150 and $2,500 , depending on the type of door, material, quality, and more.

A hollow core door is an inexpensive option best used for pantries or closets. The materials used are a lightweight composite with a hollow inside. It's easier to hang a hollow-core door, but sound easily passes through.

Wood or mirrored sliding doors are a good choice for closets. They use space economically, and mirrored doors do double duty. Large mirrors also make a room appear more spacious. Swinging hinged doors or cafe doors can add easy flow from room to room while maintaining privacy.