This customer in Mclean, VA called us as they wanted to add more insulation in the attic. We did air sealing to stop the air leakage, as well as built plywood dams to keep the insulation in place and off the newly built storage deck. New decking was installed for storage and air sealed at the seams. Insulation was upgraded to R60. The result of doing this is better insulation & air sealing keeping the house warmer in the winter and cooler in the summer.