To foil this, remove the center screw from each side of the hinge and insert a metal pin or headless screw on one side. When the door is closed, the end of the pin will fit into the opposite hole. Thus, even if the pins are removed, the door will remain bolted to the frame. Look for sturdy padlocks that don't release the key until the padlock is closed. Door construction .
Burglars can kick in a weak door.
Replace hollow core doors with solid core doors , or strengthen the existing ones with metal sheets. Replace weak door frames, or reinforce them with steel or concrete. Space the bolts approximately every 3 inches. Unbreakable safety glass is also available, but it is more expensive Other entrances Skylights, ventilation ducts, and fire escapes tempt burglars because these openings usually are not visible from the street. Protect skylight and ducts with metal grates and iron bars.