Door draft stopper under door seal for exterior interior doors door sweep strip under door draft blocker soundproof door bottom weather stripping 2 w x 39 l black 4 5 out of 5 stars 11 894 9 99 9.
Sound insulation under door.
You can actually go one step further than a solid core door and buy a sound blocking door.
The most convenient versions attach to the door usually with an elastic band so you don t have to set them into place all the time.
Maxtid under door draft stopper 32 to 38 inches grey adjustable insulation sound proof door air draft blocker for noise light smell stopper 4 0 out of 5 stars 4 749 19 99 19.
The key is to make sure that the fabric you use is thick and multilayered the more layers the better as this helps muffle sound waves you could even get a consider getting a specially made acoustic curtain.
The thicker the door the better it reduces noise transfer.
Fill the gaps with a draft stopper either purchased or homemade.
Norsmic car sound deadening roller 0 7lb extremely smooth sound insulation roller metal noise deadening sound deading tool 1pc 1 69 inch by norsmic 9 99 9.
Just be aware that replacing a 1 inch door with a thicker one will involve some carpentry modifications to the door jambs.
The thicker the door the better it reduces noise transfer.
Doors made specifically for blocking sound typically utilize 1 2 inch thick particle board sound board an interior layer of lead and integral interlocking thresholds and sweeps.