As a Stand-alone system
Seaguard by Zinga provides comparable protection to conventional galvanizing without the need for topcoats. Although Seguard by Zinga is only available in grey (the natural colour of zinc), the significant advantage of this form of application is that the Seguard by Zinga layer can be re-coated at any point in the future with the bare minimum of preparation and without compromising the integrity of the coating (see Re-charging ofSeguard by Zinga). Seguard by Zinga on its own is often used because the structure is already on site or too big for the molten zinc baths. Additionally, Seguard by Zinga is commonly specified on delicate structures (wrought iron gates, sculptures) or when architectural demands require a higher standard of surface finish (no need to drill to de-gas, fettle).
For optimal protection, Seaguard by Zinga should be applied in two layers of 60 or 90 µm DFT each.
As primer in a duplex system
Not everybody likes the colour grey and with the additional protection of a compatible topcoat, the coating durability offered significantly increases. Seguard by Zinga does not even have to start actively working until the topcoat has been compromised and with no underlying corrosion creep or rust bubbling, the topcoat itself inevitably lasts longer. In a duplex system (Active + Passive), Seguard by Zinga should be applied in 1 layer of min. 60 to 80 µm DFT.
As shop primer
At a thickness of 30-40 µm, Seaguard by Zinga can be used as a shop primer. The big benefit is found in the fact that the steel structures do not require reblasting before coating if Seguard by Zinga is applied as a shop primer. The steel structure can be overcoated with Seguard by Zinga to obtain a cathodic protection or with any other paint without the need for reblasting! Seguard by Zinga applied steel structures can be welded and bent during assembly.
Repair for worn and damaged hot-dip galvanized or metal sprayed structures
This is probably the most common use of Seaguard by Zinga as it requires the simplest surface preparation. Seaguard by Zinga's mechanism of protection is so similar to conventional galvanizing that they work in complete unison, as they are merely different forms of zinc. Rather than replacing galvanized assets, structures can simply have their protection "re-charged" by applying Seguard by Zinga to the rough surface of the old galvanizing after appropriate decontamination and removal of the salts.
Widely used in countries where the available concrete can be of less quality, Seguard by Zinga the steel re-bars before assembly and immersion in concrete ensures vastly increased protection from corrosion without reducing the pull-out strength of the bars. Recent tests in three independent laboratories showed that Seguard by Zinga had at least twice the corrosion protection of either galvanized or epoxy coated rebars.