Sure Dry Basement Systems is the exclusive Basement Systems dealer in Wausau, Marshfield, Oshkosh, Appleton, Green Bay, Rhinelander, and Ashland areas providing Basement Waterproofing, Crawl Space & Foundation Repair. Sure Dry Basement Systems has been in business since 1994. All of our employees are dedicated to helping homeowners use their below grade space, whether it be basements or crawl spaces, without worrying about water or dampness or the problems caused from bowing, cracking or even sinking. Contact us for Basement, Crawl Space and Foundation Repair solutions. Free Estimates & Inspections.