Galvalume Or Painted Roof
Neither galvalume or galvanized substrate is warranted to be used in or around animal confinement or agriculture.
Galvalume or painted roof. When corrosion is spot treated to stop its spread and the roof is painted when needed galvanized steel roofing can last 50 years or more. As far as the warranty goes metal roofs hold up great and painted metal roofs are no exception. With that being said the painted metal roof has a 40 year warranty on the paint and 30 year fade warranty. Treat the sheet steel with an etching primer or flaking will result.
Galvanization or commonly referred to as galvanized is a protective zinc coating that is applied to a steel or iron substrate through a hot dip galvanizing process. Consumers won t be cramped for style with a roof made from galvalume steel. Bare galvalume and painted galvalume sheets suffer rapid corrosion when in contact with mortar and concrete. Underneath a painted metal roof there is a galvalume coating.
Galvalume is a type of sheet steel used in a variety of applications including roofing siding furniture gutters and pipe. The standard is a 55 a z coating underneath the painted metal is a 50 a z coating. Pbr is a heavy duty 26 gauge exposed fastener panel using hex head screws with a built in gasket to prevent leaking. Major costs of galvalume roofing.
While galvalume isn t yet 60 years old the product should easily last 50 years when painted and maintained. Galvalume will reject paint unless it is properly treated. Gibraltar s pbr galvalume panels are the rugged workhorses of agricultural roofing and siding. Closing thoughts on steel roofing.
One of the biggest upsides is the obvious. That coating isn t as dense. If a certain color is desired the manufacturer will use a high quality baked on enamel that is warranted to last for up to 40 years. Galvanized steel and galvalume offer excellent value cost over their service lifespan.
Before the introduction of galvalume to the metal roofing industry in the late 20th century using galvanized sheet and coil was a common practice. Bare galvanized and painted galvanized perform better in this type of environment. This means that the company will guarantee that the paint won t chip peel or crack during that time. Paint finish warranties are key to understanding the expected longevity of a galvanized or galvalume metal roof.