Properly installed Tyvek® weather barriers create an air barrier system that reduces unwanted air flow and helps maintain insulation R-Value, and keeps people more comfortable.

Is house wrap good for insulation?

Moisture conducts heat, which causes fiberglass or cellulose insulation to lose its R-value (its insulating quality). … Overall, house wrap helps keep heat and humidity out in the summer and warm air in during the winter—helping keep your heating and cooling costs down.

Does house wrap have any R-value?

According to the FTC, IDI claims its thinner, less-expensive, house wrap has an insulation value of R-3 and its thicker, more expensive product has an R-6 value, and that its advertised R-values are based on valid scientific testing.