AM Group of Companies has been in operation since 1956 and is a 3rd generation family business. We offer roofing, windows and ... doors, insulation, siding, eavestrough and other exterior services. We stand behind our work with one of the best warranties in the business. This is only possible as a result of three things: the use of premium products, good workmanship and careful inspection of completed work. AM Group of Companies hires only skilled workers who are regularly educated on installation methods and new materials. Our corporate education programs apply to all facets of the business. Proudly situated in Guelph, London, Owen Sound, Gravenhurst and Collingwood, our size and office geography allow us to deliver corporate-grade professionalism while maintaining top rate local customer service. read more