The standard is a 55 a z coating underneath the painted metal is a 50 a z coating.
Galvalume painted roofing.
What a consumer will pay for a galvalume roofing system depends on the quality of the material.
Galvanized steel and galvalume offer excellent value.
The big difference is that aluminum will oxidize chalk if exposed to the elements but the aluminum will not look unsightly and continue on with a.
Bare galvalume and painted galvalume sheets suffer rapid corrosion when in contact with mortar and concrete.
Galvalume is a trusted low maintenance product that is known for durability.
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.
Paint finish warranties are key to understanding the expected longevity of a galvanized or galvalume metal roof.
While galvalume isn t yet 60 years old the product should easily last 50 years when painted and maintained.
With that being said the painted metal roof has a 40 year warranty on the paint and 30 year fade warranty.
Closing thoughts on steel roofing.
Its versatility ease of use aesthetic appeal and long term service life extending performance makes galvalume coated steel roof panels the most economical and sustainable coating option for your customers new and retrofit applications.
Concrete and mortar are highly alkaline environments.
Treat the sheet steel with an etching primer or flaking will result.
Major costs of galvalume roofing.
Galvalume is a type of sheet steel used in a variety of applications including roofing siding furniture gutters and pipe.
Galvalume should not be used on in or around concrete or mortar.
Aluminum roofing comes with paint finishes as well and have their own warranties.
Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint.
You can also use oil based alkyd paint but.
Bare galvanized and painted galvanized perform better in this type of environment.
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.
Pbr panels are cut with aviation shears and their strength to weight ratio makes them easy to use and transport.
That coating isn t as dense.
Galvalume steel comes in various gauges that determine the quality and price.
Galvalume will reject paint unless it is properly treated.
If you want to paint a galvalume surface consider a crucial point.