Parapet Wall
A low wall at the edge of a flat roof, balcony, or terrace that projects above the level of the roof deck. Parapet walls hide roof plant and edge details, give a clean contemporary appearance, and require careful weatherproofing to prevent water ingress. They are common in urban extensions where a flat roof blends with the house terrace. Parapet tops must be correctly weathered with coping stones or metal cappings, and internal gutters at the base must drain reliably.