For extra sound blocking ability you can still install a soundproof door panel to help with even more noise reduction.
Solid core door with recessed paneling nois reduction.
As the stc numbers show you can greatly improve the soundproofing of any wall simply by replacing a standard hollow core door which is usually filled with a cardboard honeycomb materials with a solid wood slab door.
Providing a solid edge at the top and bottom of the door panel.
These doors are easy to handle and install with less hinge and jamb wear.
Though most interior doors are 1 3 8 inch thick exterior doors are typically 1 3 4 inch thick.
The thicker the door the better it reduces noise transfer.
They contain a low density fiberboard made from wheat straw to give the door a heavier feel with the added benefit of noise reduction.
If you do nothing else replacing the door alone will greatly reduce sound transmission from one room to the other.
Solid core doors constructed with a solid core between two molded surfaces offer more strength than hollow core doors and provide additional noise reduction for added privacy.
All of our interior doors come with a limited 5 year warranty if properly installed finished cared for and maintained.
Though they are more expensive these doors work well to block out sound and often have nicer finishes than hollow core doors.
Spacer door style options.
Or you can start by adding door sweeps and seals before investing in a soundproof door cover.