A Quick Guide To Zinga
If you’re new to Zinga there are usually some quick fire questions we can answer so that you don’t have to read all the content on this site in order to answer them! Should you need more information on each topic we’ve added links to the associated pages that deal specifically with the topic.
What Is Zinga?
It is a 96% pure zinc coating.
Is It Paint?
No. Zinga is liquid but is not a paint as it does not behave like paints. It does not run, skin over or clog up spray guns. It does not go blotchy or stay tacky like paint can. The tin can be stored indefinitely unopened, and once opened can be stored until you next require it so there is no wastage.
What Can It Be Compared To?
Hot-dip galvanising and zinc thermal spray (TSZ). In a marine environment Zinga consistently out lasts hot dip galvanised steel.
How Does It Work?
Zinga contains a very high concentration of active zinc. This creates a potential difference of about -840mV between the coating and the substrate. Once the steelwork becomes wet, the zinc ions go into dissolution and the current begins to flow from the zinc to the steel. This depletes the zinc layer and protects the steel underneath by preventing any corrosion reaction taking place. This is galvanic protection.
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If The Zinga Gets Scratched What Happens?
Zinga has a 3-5mm ‘throw’ meaning that any uncoated metal within 5mm from the Zinganised surface (such as a scratch) will be protected. A layer of rust will form however there won’t be any pitting beneath it. Small scratches and chips will often go light brown-grey in colour but there will not be any corrosion underneath.
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Will You Get Rust Creep Under Zinga?
No. This is because all the steel that has been coated will have a galvanic charge flowing through it between the zinc and the steel so there is no way for the corrosion reaction to start under the Zinga.
What Is The Lifespan Compared To HDG?
After comparative usage on marine projects, Zinga out-lasts Hot Dip Galvanising by approximately 10%. In normal atmospheric conditions the 2 coatings are comparable in lifespan.
Is Zinga Fireproof?
Yes. It is certified to BS476 parts 6 and 7. Zinga will not propagate a fire or cause spreading which is why it has been used on the London Underground for many years, and is increasingly being used on offshore oil platforms. It is also approved for use by the British Navy and used on vessels such as the HMS Defender.
Can Zinga Be Used Around Food?
Not when applying Zinga, but yes when it is dry. Zinga is medicinal quality zinc (99.995% pure) so once dried it is completely to safe to use in areas where food is to be prepared or stored. The binder is completely non-toxic and completely safe when dried. It is recommended however, that a thin layer of an FDA-approved paint is applied on top of the Zinga as the Zinga is slightly porous, which means there is a possibility of bio-accumulation where bacteria could live.
Can You Use It Where Abrasion Occurs?
Yes. Zinga has been used to galvanise chains and bolts for marine use. When it has been subjected to abrasion it seems to take on a shine and polishes up.