"Understanding Your Home" by Building Inspector Mark Visser
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Copper above entrance way
Metal roofs are common in areas with heavy snowfall. The snow sliding off the roof could damage or tear off the eavestroughs so usually they are not installed.


Metal Roofing...
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Metal roof systems. Galvanized metal roofing
. Copper Roofing. Aluminum shingles. Factory finished roof systems.
Galvanized steel, tin and copper roofs have been around for a long time and can last a lifetime with proper maintenance.
Galvanized steel roofing is a very versatile building material. It is durable. It can be used on residential, commercial, industrial, or agricultural buildings. It is not only used in roofing applications, but also may be used as a wall covering. There are many different profiles and styles available to fit most every building situation. Maintenance involves early rust removal and painting. If this is neglected, most roofs will rust. Once a roof has rusted through, it should be replaced. 'Repairs' made with tar or roofing cement are temporary and the roof may have to be replaced soon.
Aluminum. One of the longest lasting metals, but somewhat expensive. Aluminum roofs are lightweight, corrosion-resistant, and have high reflectivity, which may help increase a building's energy efficiency.
Copper roofing
is long-lasting. Many older public buildings do not only have copper roofs but also copper eavestroughs, downspouts and valleys. For residential homes it is usually used for smaller roofs like above windows, entrance ways and dormers. After the installation copper will oxide to the familiar and
beautiful antique green colour.
Factory finished roof systems are available for residential and commercial applications. Most systems use 26 or 30 gauge steel panels which have several protective coatings and a durable finishing coat of vinyl or PVC. The panels come in a wide variety of sizes, colours and patterns and can be installed on strapped (or furred) trusses in new construction or directly over existing asphalt shingled roofs.

Copper roof in residential construction

Galvanized steel roofing for heritage barn

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