Increasing installed R-value of a wall system
Nearly two-thirds of the total heat lost or gained through the building envelope occurs through radiant heat flow.
DuPont™ Tyvek® ThermaWrap™ helps to regulate the radiant energy of wall systems for increased comfort and reduced energy costs. In winter, DuPont™ Tyvek® ThermaWrap™ helps keep radiant energy that’s accumulated in the wall sheathing from releasing to the exterior. In summer, the metalized surface reflects radiant heat out of the wall, helping to keep the interior cooler. Reducing radiant heat flow through the wall system is particularly important at the studs, plate lines, joists and headers where conductive heat flow through the wall is the greatest. This not only saves energy and reduces heating and cooling costs, it also changes the dew point in the wall to help reduce the risk of condensation which can lead to mildew, mold and wood rot in wall cavities.