Penetrations of the WRB are unavoidable, but it is critical to ensure that they remain watertight. The recommendations for sealing these penetrations are often based on unrelated test methods such as those for nail penetrations in roofing membranes or on anecdotal evidence. This course will cover a data driven test plan which was used to was used to determine which type of flashing and sealing solution is best to ensure water tightness after cladding attachments are installed over polyisocyanurate insulating sheathing. Additionally, information on how other single-layer insulating sheathing systems allow for water tightness of the assembly after cladding attachment will be discussed.

Presented by various experts on behalf of DuPont Performance Building Solutions.