- Sto Corp has announced several new appointments to its staff. Sean Bresnan has been named Internet marketing specialist. Nisha George is the new marketing coordinator. John Chamberlin is responsible for managing the company’s StoPowerwall Stucco and StoQuick Silver Cement Board Stucco product lines under the title associate product manager. Rocío Rivera has been named media relations specialist.

- For its Canadian market, the company also names Philip Kingswood market manager and Brock Osborn is the new business development manager, restoration.

- California Drywall Co. has appointed Bruce Faultner as senior estimator/project manager.

- Wolf-Gordon has named Harold Wolfson chief operating officer.

- GZA GeoEnvironmental Inc. announced that Christopher Snow has been promoted to the position of associate principal.