Relatively few people in the commercial construction industry are kept up at night by polyisobutylene (PIB) — the synthetic rubber sealant commonly used to provide a long term and durable moisture barrier for insulated glass window units (IGUs). That may be changing, however. Litigation alleging significant defects in PIB suggests that this fairly commonplace sealant has become a source of anxiety for building owners, contractors, subcontractors and PIB manufacturers.
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Originally published by Law360
Co-authored by Meredith Loretta, a firm summer associate in 2016
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