Kosarek Construction Company is a fully licensed and insured roofing contractor proudly serving residential and commercial property owners across the greater St. Louis metro area, including communities throughout St. Louis County, St. Charles County, Madison County, and St. Clair County. With 20+ years of combined experience and a background rooted in the precision standards of the aerospace industry, our certified crews deliver roofing installations, replacements, repairs, and commercial roofing systems built to last. We are a GAF ShingleMaster certified contractor, offering manufacturer-backed warranty coverage on every eligible installation. Services include residential and commercial roofing, storm damage restoration, roof repair, and full insurance claim assistance from inspection through final settlement. We serve St. Louis, Chesterfield, Kirkwood, Webster Groves, Arnold, Fenton, O'Fallon, St. Charles, Wentzville, Belleville, Edwardsville, Collinsville, and surrounding areas. Free roof inspections. 100% Satisfaction Guarantee. Call 1-855-567-2735.