The window-to-wall connection is one of the most overlooked or mis-detailed elements on any construction project. Current practices for sealing window openings — the tie-ins or transitions from windows to air barriers or curtain wall systems — frequently result in problems from air and moisture infiltration into a building. The major issues are (1) proper specification of material, (2) detailing of the interface, (3) sequence of installation, and (4) how to predict performance through the “Tested System Concept.” This presentation will explain why window-to-wall is such a critical transition point on the building envelope and demonstrate engineering solutions to performance and design challenges. The Camp Pendleton Military Hospital case study will be presented as an example.
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