DuPont created Tyvek® HomeWrap to have the optimum balance of properties for superior performance against the elements and the competition. When choosing DuPont™ Tyvek® HomeWrap, you can be assured you are using the leading brand of wall underlays.

One basic function of a wall underlay is to help insulation maintain its R-value by keeping air from infiltrating the wall system. The ability of a wall underlay in helping to prevent air infiltration directly relates to the energy costs of heating and cooling a home. Many wall underlays fail to meet the basic air barrier requirement of ≥0.1 MNs/m³. The high air resistance level of DuPont™ Tyvek® HomeWrap allows insulation to be more effective, helping to lower energy costs.