Locking a Door With a Chair. Jam a chair under the doorknob. You may have seen this in the movies – and it really works! ... Warning: If someone tries to force the door open from the outside, there is a chance that the chair will break.

Can a chair really block a door?

Once you've found a chair that fits under the knob, lean the chair on its back legs and wedge the back of the chair under the door handle against the door. If someone tries to open the door against the chair, the top of the chair will hit the door handle, making the chair sturdy as a barricade.

Can I block a door with furniture?

Don't Block out the Light

Generally, it's best not to place furniture such as sofas and loveseats in front of a patio door or windows in your apartment. Not only do you prevent an adequate amount of light from coming into the room you also take away from the outside view.