Galvanized Vs Painted Steel Roof

If crawling around on a metal roof in the hot sun does.

Galvanized vs painted steel roof. Instead d mac recommends ordering galvanized steel decking that is prime painted in the factory when field paint over galvanized steel decking is required. Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal. Galvanized steel is more durable than most other material utilized for building. The cost of galvalume and galvalume plus are about the same as that of galvanized steel.

At least twice the corrosion resistance over galvanized coatings of the same thickness and excellent corrosion resistance at cut edges mill finish galvalume can provide at least 35 years of performance before requiring major maintenance while the full service life can be 40 60 years. Apply field paint over a small area and. It can also be painted and comes in many different looks. However paint is softer and thickness can vary.

But galvalume has an excellent performance life in bare exposures as well. This means that the painted coating is susceptible to chips and scratches exposing the underlying metal to corrosion. Corrosion is the death of metal roofing as we all know. Galvanised vs painted steel.

Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials. Via abc metal roofing. The thick zinc rich paint we use providesr a layer of the zinc on the materials surface to further help with corrosion resistance. Most galvalume like galvanized steel is coated.

There are slight differences between stainless steel and galvanized steel. Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example. In short this is what is meant by the term galvanized it takes its name from the italian scientist luigi galvani.

Preparation for field painting. Painting a galvanized steel panel roof is not all that different from painting other metal objects but you must ensure that the surface is perfectly clean before beginning the application process. Galvalume and galvanized steel roofing are affected differently by corrosion.