What is Parapet?

A parapet is a low wall built along the edge of a roof, terrace, balcony, or bridge that extends above the roofline or outer edge of a structure.

Definition

A parapet is a protective wall that rises above the edge of a roof or other elevated structure. Originally, it was used in castles and fortifications for defense. However, parapets are now a common feature in residential, commercial & industrial buildings. They can be made from materials such as concrete, brick, stone, metal, or glass and may serve both functional and decorative purposes.

Purpose

Parapets are mainly used to create a protective barrier around the edges of roofs and elevated areas. They help reduce the risk of falls & provide some protection from wind, and can help slow the spread of fire between nearby buildings. In many modern buildings, parapets are also used to hide rooftop equipment such as HVAC units, vents, and piping, giving the structure a cleaner and more finished appearance.

Examples of Use

Commercial Buildings: Used around flat roofs to conceal mechanical equipment and improve safety.
Apartment Complexes: Installed along rooftop terraces and balconies to provide protection for occupants.
Parking Structures: Added along the edges of upper levels to create a safety barrier.
Historic Buildings: Found on castles, forts, and other traditional structures where they were originally used for defense.

Related Terms

Fire Hydrant

:

A fire hydrant is a connection point to a water supply system that allows firefighters to access large volumes of water during emergencies.

Gable

:

A gable is the triangular section of a wall that’s typically found at the end of a building where two roof surfaces meet and rise to a peak.

Eave

:

An eave is the part of a roof that extends beyond the exterior wall of a building. It forms the roof's edge and helps shield the structure from the elements.

Notes

Parapets are usually positioned on buildings with flat or low-slope roofs.
Depending on the architectural design, they can be plain, decorative, perforated, or paneled.
Local building codes often require a minimum parapet height and safety features.
Proper waterproofing and flashing are important to avoid water damage where the parapet meets the roof.
A parapet enhances both the safety and beauty of a building.

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