For centuries, copper has proved to be one of the best, most
cost-effective architectural metals for corrosion resistance. Along
with stainless steel and titanium, it often is used where corrosion
is a major concern. Although no roofing material is perfect, copper
can satisfy the demands of building owners, architects and
contractors when it comes to lifetime economy, ease of fabrication,
low maintenance and environmental friendliness.
There are thousands of examples of long-lived copper roof system
and flashing installations, many well over a century old. Time has
proved those buildings were constructed properly with careful
thought to design, details and installation. But many factors can
limit the potential life of metal roofing and flashings, one of
which is corrosion.
The surface of any architectural metal will react when exposed
to certain chemicals. Some chemicals are natural, such as those
found in water from rainfall. Others are manmade, such as
industrial pollution. How a given metal reacts to a chemical is
related to the type of chemical, chemical's concentration and
amount of time to which the metal is...
Log in or register for FREE access to this article and other Professional Roofing online content.