Striving to serve our local community with excellence and professionalism.  Locally owned.  Locally invested.
Industry Leading Excellence & Professionalism
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For over 15 years, Cornerstone Group has been serving the Sarnia-Lambton area.
Cornerstone Group is the result of the expansion of Cornerstone Pressure Washing into additional avenues of mobile services. These avenues are represented by Cornerstone Agri-Services and Cornerstone Industrial.
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Why people choose
Cornerstone Pressure Washing