It is estimated that upto 4% of the world’s GDP is lost through the effects of corrosion each year.
This attributes the importance of lifecycle costs in construction. In addition, sustainability is now highly on the agenda when choosing materials and contractors, due to legislation and conscious, ethical decisions.
Hot-dip galvanising is a well-established and highly effective anti-corrosion treatment for steel. The process is inherently simple where coatings are metallurgically bonded to the base steel, forming an impervious barrier between the substrate and the corrosive environment.
The process conforms to BS EN ISO 1461:2009, which requires the zinc coating to be an average of 85 microns thick on steel components above 6mm thick. Hayling College is a great example of hot-dip galvanisation in application.
Exceptional corrosion resistance and longevity
As soon as the galvanised item leaves the zinc bath the surface reacts with the oxygen in the air to form a thin, impervious film of zinc oxide that has excellent adhesion and anti-corrosion protection properties.
Every part of a galvanised article is protected, even recesses, sharp corners and inaccessible areas.
Low initial cost combined with long life provides economical protection for long periods – often more than 25 years in hostile environments.
Multi-coat painting can take as long as a week, hot-dip galvanising can be achieved minutes.