This follows on from a 5.2% increase in production in 2018, and a whopping 4.4% growth in production during 2019. 55% Al-Zn has seen a continued upward trajectory over the past year, in stark contrast to global GDP which is predicted to shrink due to the economic woes brought on by Covid-19.
What is this coating alloy made up of?
A carbon steel base sheet is continuously hot-dipped to coat it with an alloy consisting of 55% aluminium, 43.4% zinc and 1.6% silicone. This alloy prolonging the life of the inner steel core by protecting it from perforation due to exposure to the elements.
This alloy in this particular combination allows for the best characteristics of both aluminium and zinc metals to perform in a specific synergy for lasting durability which helps to explain why it has become one of the fastest growing materials in today’s metal roofing market.
Increased service life
Service life expectancy of 55% Al-Zn sheets has gradually been increased from 20 to 60 years, based on longer term data from actual building installations using the material. This three-fold increase in estimated service life is the result of continual refinement to the production technology as well as improved recommendations for best practices in terms of design, installation, and maintenance.
Sourcing your 55% Al-Zn coated steel from a licensed supplier is the only assurance for obtaining this length of service life.