Art deco houses typically had flat or low pitch roofs. Often, these are associated with weathertightness problems.
Original roof cladding was generally corrugated steel, flat-sheet metal, or built-up bitumen impregnated felt. Read more.
Roofs and parapets are a major area of problems with art deco houses, both because of deterioration of the original cladding and because the low pitch let in water, which can contribute to rot and corrosion. Read more.