DerTec Foundation Repair/Replace, in Brandon, WI, is the area's leading foundation repair company serving clients since 1991 within 100 miles of Waupun. We can give you peace of mind concerning your building foundation. We can fix bowing walls, cracks, leaks, or we can replace the whole thing with a modern basement! Is your cottage foundation giving way? Are your floors turning into hills? Call us! Would you like your house at a different spot on your property on a new foundation? Call us. References upon request. Installing a useful basement is the least expensive way to increase your useful living area. For all your foundation repair or replacement needs, contact DerTec Foundation Repair/Replace in Brandon.