ASTM International presented its top annual award – the 2024 Award of Merit – to Jeff Bowlsby for his contributions to ASTM’s gypsum and related building materials and systems committee (C11). 



Bowlsby was recognized for his vast contributions to C11 standards including an overhaul of C1063, his primary authorship of new stucco standard C1861 and his steadfast leadership of the committee’s stucco work group with purview over all ASTM stucco industry standards, and overall service to the stucco industry at ASTM and beyond.

An ASTM International member since 2007, Bowlsby has been previously honored by the committee with two Awards of Recognition (2016, 2017).

Bowlsby’s career concentration is building enclosure design, stucco/EIFS cladding, and forensic evaluations. He current works as a technical director, building enclosure and stucco consultant, and vice president at Simpson Gumpertz & Heger, a position he has held since 2022.

Bowlsby received his bachelor of architecture degree from the University of Oregon in 1985.

Media Inquiries: Gavin O’Reilly, tel +1.610.832.9618; goreilly@astm.org

Release #11849

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