foredors

A foredors is a type of door that is positioned in front of another door, often in series. This architectural feature is typically found in older buildings, particularly those with a strong emphasis on security or climate control. The space between the foredors and the main door is often referred to as an airlock or vestibule. This intermediary space serves multiple purposes, such as preventing drafts, reducing heat loss or gain, and enhancing security by creating an additional barrier to entry.

In some historical contexts, foredors were used to create a more formal entrance sequence, allowing visitors to be received in a transitional space before being admitted into the main living areas. The materials used for foredors can vary widely, from simple wood to more elaborate designs incorporating glass or decorative metalwork. The specific design and function of a foredors can depend on the architectural style of the building and the era in which it was constructed. While less common in modern construction, the principles behind the foredors are still employed in contemporary designs for energy efficiency and security, such as in the form of vestibules in commercial buildings or airlocks in laboratories.