Toronto Basement Waterproofing Contractor / Company, Drain repair contractor AquaResist Inc. has earned a reputation as the best Wet Basement Waterproofing Contractor / Company in Drainage, Home Improvement, Underpinning, Basement Lowering Industrial / Commercial Contractor in Toronto, Mississauga and GTA. Our more than 25 years of strong customer satisfaction proves that we will stand behind our work for the long term. 25 year warranty