DuPont Tyvek Home Wrap 9' x 100'DuPont Tyvek HomeWrap delivers the optimum balance of properties for superior performance against the elements. Tyvek HomeWrap helps prevent outside water from entering the walls and helps to seal the home to keep outside air where it belongs. DuPont Tyvek HomeWrap helps reduce homeowner energy bills because homes stay cool in the summer and warm in the winter and dry all year round. Tyvek HomeWrap helps protect a home against damaging wind and rain