FAQs

Seguard by Zinga has been developed to protect ferrous structures. The performance of Seguard by Zinga is highly dependent on the degree of surface preparation. How better the preparation, how better its performance. Please see surface preparation for a detailed explanation.

Seguard by Zinga can be overcoated but is -like any Zinc rich coating- sensible to solvents. Therefore compatibility must be ensured. In general, fast-curing low solvent containing topcoats perform better. To test, apply a small amount of topcoat on a non-critical, non-visible part of the structure which has been coated with Seguard by Zinga and observe if any reaction occurs. To avoid any problems, we advise the use of a sealer (see: sealers on Seguard by Zinga).

Seguard by Zinga should be stirred using mechanical tools. Insert a mechanical mixer into the pot and stir for at least 2 minutes for small quantities (1 – 2 kg) and at least 5 minutes for large quantities (5 – 25 kg). To test correct stirring, perform one of two options:

Weigh a measured volume: if the calculated density (weight divided by volume) is between 2,58 and 2,73 kg/L, the product is adequately stirred. Empty the jar after stirring in another jar. Dilute the remaining product with SeaguardSolv by Zinga. Mix the diluted product. Poor this in the new jar. Mix the new jar thoroughly.

Seguard by Zinga can be easily removed using MULTI METAL SOLVENT. Also dried Seguard by Zinga can be redissolved using SeaguardSolv by Zinga.

No, Seguard by Zinga is only available in grey.

The grey is attributed to the extremely high Zinc content of the coating. In order to have enough coloured pigment in a paint, the Zinc content is dropped below the level required for galvanic protection.

The performance of Seguard by Zinga is, like any coating or paint, highly dependent on the degree of surface preparation before application. Therefore Seguard by Zinga can be applied on a slightly rusted surface, but due to the barrier of rust between Seguard by Zinga and steel, the galvanic protection is affected and therefore the performance of Seguard by Zinga is reduced.

Since Seguard by Zinga can offer a sustainable, long-lasting protection of steel surfaces, it is profitable to invest in a thorough surface preparation which prevents premature failure of the coating.

Yes, the welding of steel coated with Seguard by Zinga (max. 60 μm DFT) is possible without excessive zinc fumes because the heat of the approaching weld bead burns off the organic binder well below the melting point of zinc.

The remaining zinc dust is removed from the weld zone by convection leaving the weld-area free from contamination.

If the applied DFT is more than 60 μm, the excessive coating must be removed with a wire brush.

Seguard by Zinga steelwork must be free of oil, grease and any chemicals that are flammable.

Dust and debris should be removed by air gun or by vacuuming.

Do not use silicone based anti-spatter spray on Seguard by Zinga because this will cause adhesion failure of any subsequent coatings that will be applied on the PURE ZINC COATING.

Please ensure that adequate ventilation and extraction is used at all times. When welding PURE ZINC COATING steel, the operator must wear a mask that conforms to the regulations.

Seguard by Zinga can be used on welds to ensure a cathodic protection over the entire structure.

Before accepting the job, please verify that the welds are in good condition. Holes, undercuts or cracks should be remedied by welding or grinding until a uniform surface is obtained.

The surface should be degreased and cleaned to cleanliness degree St 2. Weld spatters must be removed.

Eliminate all slag and other surface imperfections with a mechanical needle hammer.

Before the application of Seguard by Zinga, the welding seams and the surrounding surface must be roughened: preferably by grit-blasting, or otherwise with a bristle blaster, a needle hammer or with rough sand paper (60 to 80). Be careful not to polish the surface!

 

After roughening of the surface, a thorough dedusting of the areas to be treated is vital.

Apply the Seguard by Zinga by brush in overlap of minimum 5 cm, in one or more layers in order to obtain the specified DFT.