Installing a second layer of Tyvek Homewrap over the over exposed Tyvek?

Due to delays Tyvek Homewrap reached the 4 months of exposure mark. The builder proposes installing another layer on top, without removing. DuPont permits either but advises reduced permeability if… Due to delays Tyvek Homewrap reached the 4 months of exposure mark. The builder proposes installing another layer on top, without removing. DuPont permits either but advises reduced permeability if…Read MoreGreenBuildingAdvisor