Canadian Metal Roof Manufacturing Is Your Premiere Choice for long life (50 Years- Life time) Your Metal Roofing Project. The Canadian Metal Roof Manufacturing has been offering durable and reliable roofing and siding coverage of steel and aluminium for over 30 years. We have based our knowledge on the experience of people from Sweden, who for generations have used sloping roof structures, protecting their homes against gusty winds and snow. Combining this knowledge with the use of modern technology allows us to offer you the best quality products at low cost.