Homeowners have many ways to secure a door from being kicked in. Replacing the door with a solid core or steel-reinforced unit and installing a heavy-duty deadbolt strike plate can make it challenging for burglars to kick in the back door. It’s also possible to strengthen the doorframe, install a security bar or door barricade, and add multiple locks. Consider replacing glass doors with thick tempered glass or security glass while welding solid bars to the door.