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Tidal Wave Auto Spa

Expanding across the country with a superior customer experience.

Founded in 2004, Tidal Wave Auto Spa is rapidly revolutionizing the car wash industry. Their unique express car wash facilities can be found in over 100 locations across the US.


Beginning in 2020, Willett Engineering was selected by SHJ Construction to provide prototypical and site-specific designs for Tidal Wave’s new locations. Many of the designs make use of innovative modular construction, converting prefabricated shipping containers into the auto spa’s mechanical rooms.


To date, we have provided structural engineering services for 45 Tidal Wave locations, with more on the horizon.

Valdosta, Georgia
Sylacauga, Alabama
Innovative designs for an industry vanguard.

Willett Engineering is a Gray company.

Willett Engineering is a structural analysis and design company offering best-in-class development for industrial projects, educational facilities, offices, retail buildings, steel erection, and more. In 2018, Willett joined the Gray family of brands to complement its structural engineering services. As a Gray company, Willett continues to combine excellence in engineering with collaborative solutions, using the latest in technology and design.