LOWEST FIRST COST
(yes, lowest first cost.) In many cases galvanizing now costs less to apply than coating with much shorter lives.
LOWEST LONG TERM COST
Even in cases where the initial cost of galvanizing is higher than a comparable alternative, galvanizing is almost invariably cheapest in the long term.
THE ECONOMIC CASE FOR GALVANIZING IS STILL IMPROVING
There is a high labour cost component inherent in the application of most other coatings and their cost directly reflects increases in the cost of labour.
The standard 2 oz. ft.² galvanized coating has a typical life without maintenance of more than 50 years in rural environments, and 20 to 25 years in urban and coastal conditions.
The galvanized coating is bonded metallurgically to the base steel so that it becomes part of the steel surface it protects. Coating life and performance are reliable and predictable.
A galvanized coating has a unique metallurgical structure which gives outstanding resistance to mechanical damage in transport, erection and service.
ELIMINATION OF MAINTENANCE FOR LONG PERIODS
The use of galvanizing defers maintenance for long periods compared to other coatings for steel. Remember, hidden maintenance costs can be extremely expensive when they entail difficult access, or plant shut-down, and when structures are located in remote areas.
AUTOMATIC PROTECTION FOR DAMAGED AREAS
Galvanized coatings corrode preferentially to steel, providing sacrificial or cathodic protection to small areas of steel exposed through damage to the coating. Unlike organic coatings no touch up is needed when damage occurs.
Every part of a galvanized article is fully protected, even recesses, sharp corners and inaccessible areas. No coating applied to a structure or fabrication after completion can provide the same protection.
EASE OF INSPECTION
Galvanized coating thickness is controlled automatically by steel thickness and a standard, minimum coating mass results. Soundness and continuity are judged readily by the eye.
TIME SAVINGS IN FACTORY, AND ON SITE
Galvanizing is faster than painting; the elimination of site painting can save substantial time in site erection or assembly.
Galvanizing has no effect on the mechanical properties of commonly galvanized structural steel.
The humid greenhouse environment tests the protection of hot dip galvanizing to the very maximum. The lifespan predictability of the zinc coated steel ensures maintenance-free corrosion protection for the life of the structure.