BET is an INAB accredited testing laboratory. Our testing laboratory operates an accredited quality management system in accordance with ISO 17025. (INAB Reg #193T) Building Envelope Technologies was formed in 2001. Since this time BET have built a strong reputation among leading Architects, Contractors, Engineers and end users for providing a service of the highest technical integrity and have more experience in the area of building testing, compliance & building defect analysis than any other company in the country.