Because this barn style door slides on a track mounted above the door frame it can be thicker and thus more soundproof than a door mounted within the doorframe.
Sound insulation doors.
If sound can leak around the sides of your door consider adding soundproofing rubber to the perimeter.
One of the most common types of such doors has a polyurethane foam insulation core that s encased between layers of steel.
Wood composite is a slurry of wood fiber and polyurethane resins that can closely mimic the look of real wood and which provides excellent insulation against both sound.
Solid core doors are the most cost effective soundproof doors.
However it also makes this type of exterior doors much more effective at soundproofing than interior ones.
Soundproofing rubber is typically a dense form of neoprene the same stuff they use in wetsuits to insulate against the cold.
Best seller owens corning thermafiber fire and sound guard mineral wool insulation batt 15 in.
If your door already has molding around it you ll need to pry it off.
Adhesive foam tape 3 rolls 1 4 inch wide x 1 8 inch thick high density sound proof insulation closed cell foam seal weather stripping for doors and windows total 50 feet long 16 5ft x 3 rolls 4 4 out of 5 stars 2 260 11 80 11 80 get it as soon as sat aug 15.
Sliding solid wood barn door.
The primary purpose of the insulation is to keep cold weather out.
Another option would be to get a solid core door to prevent noise from coming through.
Solid composite interior door.