A solid core door helps block the transference of sound by eliminating the drum like construction of a hollow core door.
Best interior doors to block sound.
The best method as described here is the first use a curtain or tiles on the door to block out sound.
Again because of their hollow core construction these doors sound qualities and design are similar to those of a drum which makes them ineffective at blocking sounds.
Suggestions for a soundproof door.
Use either of these that cover the entire door floor will also complete method three more.
Soundproof interior doors to buy.
A rubber door sweep does exactly what you would expect.
Solid core textured six panel door.
It sweeps the floor as the door is closed creating a barrier between the door and the floor making it much harder for sound to get through.
Then seal the gaps with a door gasket door sweep or spray foam to prevent air leaks.
Typically a good one can be bought for a price around 30 or less.
You can actually go one step further than a solid core door and buy a sound blocking door.
Though most interior doors are 1 3 8 inch thick exterior doors are typically 1 3 4 inch thick.
On the other hand the sturdier solid core composite and solid wood interior.
More than any other door this type of door will seamlessly replace your old six panel hollow core doors while giving you an stc rating of between 27 and 30 the look is identical to the old door but the performance will be greatly improved.
While the material in the curtains helps them to block sound our curtains also seal around the perimeter of windows and doors to prevent sound leaks.
This material has an stc rating between 20 and 25 allowing our curtains to block between 60 and 80 of outside noise.
Our sound blocking curtains are lined with a material called mass loaded vinyl.