Abstract: The apparatus includes fire retardant blankets normally stowed within housings in place on a building roof structure or below a roof eave. Cables extract the blankets for deployment over a roof. Fire retardant wall blankets stowed in housings adjacent roof eaves are deployed by gravity. For protection of a building end wall having a gable,a blanket support is carried subjacent the end of a roof structure and , upon release , of the support the same pivots to the horizontal whereat a fire retardant blanket is deployed. Associated with the blanket support is a triangularly shaped gable blanket which deploys adjacent the gable. A modification of the apparatus includes a deck mounted blanket housing in which is stowed a fire retardant blanket drawn over the deck and downwardly by a winch and cables. A further modification includes a blanket housing atop a roof ridge with roof mounted cable and blanket supports.