The fire-ravaged Notre-Dame cathedral has received temporary tarps on its roof due to concerns that impending rain in Paris might result in further damage to the 800-year-old building amid ongoing rescuing efforts. /Getty Images

BBC reported that the cathedral's vault, which partly collapsed in the fire, has already been partly waterlogged after fire-fighting efforts. /Getty Images

The chief architect of Notre-Dame, Philippe Villeneuve, told French broadcaster BFMTV that erecting an emergency tarpaulin was "the highest priority" to protect the cathedral, as rainfall is expected in Paris this week. /Getty Images