The roof over the stairwell and the roofs of all the buildings need periodic resealing to prevent water damage. Some of the buildings need a purchased sealer that costs about $50 dollars each 5 gallon bucket. Several buckets are needed each time we need to reseal. Other roofs needed a mixture of white cement and other products and is applied with old brooms. This type of sealing will cost approximately $75 dollars for all the supplies.