1 : a wall, rampart, or elevation of earth or stone to protect soldiers The invaders fired arrows over the castle's parapet. 2 : a low wall or railing to protect the edge of a platform, roof, or bridge.

What is a parapet on a house?

A parapet is a barrier that is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. ... In the Bible the Hebrews are obligated to build a parapet on the roof of their houses to prevent people falling.

What is the purpose of a parapet wall?

Parapet walls perform a number of important functions: They can be designed in various shapes to create a desired façade. They can be designed to hide roof top equipment (AC units, etc.) They help prevent roof edge blow off by diverting air flow up, over and away from the roof edge.