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Challenges with using ASTM E 2112 in North American climate zones

from AWDI

Designing and constructing window-wall interfaces for long service life must include consideration of potential pathways for water ingress and egress — through both the window system and the interfacing cladding(s). ASTM E 2112 prescribes the installation of windows, patio-type doors and skylights as used primarily in residential and light construction commercial buildings. Adopting ASTM E 2112 allows designers to rely solely on windows to resist water penetration, independent of the adjoining wall assembly. However, experience of some has demonstrated that this approach has considerable risk.

Notwithstanding the advances in the performance of sealants and membrane materials, reliance upon face sealed systems has a higher risk of water penetration because of the inherent aging of the materials and loads imposed, thus reducing the overall resistance to water penetration and consequent damage. There has been little to no change to 2112 since this article was written. So, do the problems remain? You decide. more

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