Door

A movable barrier used to open and close an entrance

A simple wooden door

A door is a movable structure used to block off, and allow access to, an entrance to or within an enclosed space, such as a building, room, or vehicle. Doors are typically made of a solid panel or a collection of panels, and they can be opened by various mechanisms, including hinges, sliding tracks, or rotating on a central axis.

History

An ancient stone door

The history of doors dates back to ancient civilizations. Early doors were simple wooden or stone barriers. In ancient Egypt, doors were made from a single piece of wood. The Greeks and Romans advanced door technology by introducing more complex designs, including folding and sliding doors.

Types of Doors

Hinged Doors

Hinged doors are the most common type of door, consisting of a solid panel attached to a frame by hinges. They can swing inward or outward, depending on the design.

Sliding Doors

Sliding doors move horizontally along a track. They are often used in areas where space is limited, such as closets or patios.

Revolving Doors

Revolving doors consist of several panels that rotate around a central axis. They are commonly used in commercial buildings to control airflow and maintain temperature.

Folding Doors

Plaster cast of folding doors from Pompeii

Folding doors, also known as bi-fold doors, consist of multiple panels that fold against each other. They are often used in closets or as room dividers.

Materials

Wood

Wood is a traditional material for doors, valued for its aesthetic appeal and versatility. It can be carved, painted, or stained to suit various styles.

Metal

Metal doors, often made of steel or aluminum, provide strength and security. They are commonly used in industrial and commercial settings.

Glass

Glass doors allow light to pass through and are often used in modern architecture. They can be framed or frameless, and may include frosted or tinted glass for privacy.

Cultural Significance

A door from Villa Boscoreale

Doors have significant cultural and symbolic meanings. In many cultures, doors represent transition and passage. They are often used in rituals and ceremonies to symbolize new beginnings or the closing of a chapter.

Architectural Features

Door Frames

The door frame is the structure that supports the door. It is typically made of wood or metal and includes the head, jambs, and sill.

Door Hardware

Door hardware includes the handles, locks, hinges, and other components that allow the door to function. These elements can be both functional and decorative.

Related Pages

• Window
• Lock (security device)
• Architecture
• Building materials

A decorative door in Russia