A blanket for smothering fires or protecting items from fire, comprised of a wettable polymer capable of high volume water retention, a water reservoir and heat activatable valves or water source to permit water to flow from the reservoir to wet the polymer through gravity fed conduits. For fire extinguishing, such as well-head fires, the blanket further comprises a heavy metal framework and an under-blanket support. The blanket is weighted and sized to cover the well-head fires with sufficient wetting to maintain it in place for sufficient time for smothering of the fire with an airtight closure. Uses of the reservoir-connected blanket include houses and mobile homes, protection suits and doorway mounts. In an embodiment used to protect valuable items, the polymer portion of the blanket is comprised of a tri-layer configuration of: a) a water tight liner to prevent water damage to the covered item, b) the wettable polymer, and c) a protective outer coat of a material such as glass fiber, kevlar and the like. If sufficiently stiffened, the polymer material can be utilized as a structural member in houses or boats with the water source being the river or other body of water the boat is set upon, or an existing sprinkler system in a house.