If your knob has a push lock.
Block door from inside.
Doors elevation cad blocks.
Place a door wedge with an alarm under the door to block it.
This should lock the door.
120 high quality doors cad blocks in plan view.
Place the piece of furniture as close to the opening of the door as you can.
And if someone attempts to open the door the wedge will act as a barricade.
Works well but i had to add a 3 4 wood blocks behind the bar to prevent the door from being able to opened the 1 2 and then allowing the bar to be wedged up with a narrow tool.
The thicker the door the better it reduces noise transfer.
Doors elevation 2 cad blocks.
As with steps 1 and 2 this technique works if the door opens inward towards you.
Most people try to block the whole door but right below the doorknob is the area that really counts.
Block the door from the inside by stuffing a sock or a similar piece of fabric under the door.
Once that is complete the heavy metal mountings in to the door frame make solid and secure.
435 doors cad blocks.
Lock the door from the inside.
Move a large and heavy piece of furniture in front of the door.
Even a shoe or a slipper can work if the gap is large enough.
Similar to a sock but more effective.
138 high quality doors cad blocks in elevation view.
You don t need a key to lock most doors from the inside.
Though most interior doors are 1 3 8 inch thick exterior doors are typically 1 3 4 inch thick.
Find the push lock or twist lock button on the inner doorknob.
Doors plan cad blocks.