We exist to keep our customers dry. If you need a new single-ply commercial, industrial or institutional roof—whether you’re ... a building owner, architect, general contractor or facilities manager—you’re in search of a roofing contractor you can trust. You’ve come to the right place. To date, we’ve applied over sixty-million square-feet of single-ply roofing including projects ranging from just a few squares to major industrial plants of nearly one-million square-feet. Great Lakes Systems is an approved applicator for Carlisle SynTec, Firestone Building Products, Duro-Last Roofing and Johns Manville. read more