During the replacement process we start the morning off protecting your property by covering all windows with plywood and laying down tarps around the entire property to help protect the home and yard from the nails and falling debris. To further ensure that we leave the property as clean as possible, we have two guys always using magnets on the ground to avoid the spreading of the nails throughout the property. When we do our tear-off of shingles, we also remove all old felt and inspect the decking to ensure that there is no water damage. We then replace the felt with a synthetic felt as it is more durable. When we put on the new shingles, we use 4-6 nails per shingle to help prevent shingle slipping and future wind damage.