As far as the warranty goes metal roofs hold up great and.
Galvalume or painted roof.
Underneath a painted metal roof there is a galvalume coating.
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.
Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials.
26 gauge pbr galvalume panels are ul 2218 class 4 impact resistant.
With that being said the painted metal roof has a 40 year warranty on the paint and 30 year fade warranty.
However wear occurring along the roof s drip edge where all the water and snow run off will eventually wear away the aluminum coating once the paint finish fails and rust will ensue.
Uses for galvalume metal roofs walls overall galvalume is suitable as a roof wall trim accent and more in most building applications in some of the most extreme environments including hurricane zones.
If you want to paint a galvalume surface consider a crucial point.
Most galvalume like galvanized steel is coated.
For example a galvalume section that is 16 x3 known as a classic rib steel roof panel is 29 gauge steel and comes with a 25 year warranty.
Galvalume may also be referred to as az 50 for painted and az 55 for unpainted sheet coil which refers to the coating weight.
The standard is a 55 a z coating underneath the painted metal is a 50 a z coating.
After a long service life they are still 100 recyclable.
Galvalume metal roof and siding panels are coated with a mixture of zinc and aluminum and siliconized coating to help resist scuffs and fingerprints better than a bare metal product.
Once the galvalume is properly prepared you may apply a painted finish.
While galvalume isn t yet 60 years old the product should easily last 50 years when painted and maintained.
Galvalume steel comes in various gauges that determine the quality and price.
26 gauge thickness recommended for roof slopes of 1 12 pitch or greater.
Closing thoughts on steel roofing.
What a consumer will pay for a galvalume roofing system depends on the quality of the material.
That coating isn t as dense.
Galvalume will reject paint unless it is properly treated.
Treat the sheet steel with an etching primer or flaking will result.
Gibraltar s pbr panels are a good choice for the environment.
The mixture of zinc and aluminum protects the galvalume metal against corrosion and rust helping galvalume typically last much longer than galvanized steel.
Galvalume has a coating of aluminum over the steel and will likely take more time for rust to occur at the exposed locations of the panel.
The cost of galvalume and galvalume plus are about the same as that of galvanized steel.
