House wrap reduces the movement of air into your home and helps keep wind-driven rain out of the walls.
Tyvek House wrap is a leader in the industry. It allows any moisture in the walls to pass through to the exterior. Still dry air in the walls is an insulator providing year-round comfort. Tests show that at 9 Mile an hour wind pressure, walls with Tyvek wrap maintains 94% of the R-value compared to a wall without Tyvek at 37%.
You can learn more by reading “Wraps You in Comfort”.