Surface preparation and coating for long term protection against corrosion using NanoPrep

Industry: Water & Wastewater
Application: Surface preparation and coating
Products:  NanoPrep, ReziSafe R230 TopCoat (White)
Customer Location: : SA, Australia
Application Date: September 2021


Our client had a black steel water tank that had not previously been coated and was starting to rust. As a result, they required the rust on the surface to be removed or chemically transformed. In addition to the surface preparation, a coating was required for long term protection against corrosion and underfilm corrosion. Due to being on a food production farm, they were concerned about the environmental impacts of grit blasting near crops and water, and wanted to avoid the substantial cost of scaffolding and encapsulation.


NanoPrep was the preferred product for surface preparation to protect from underfilm corrosion and ReziSafe R230 Waterbased Top Coat (white) was applied as the final layer.
Original Condition of the Black Steel Water Tank
Original Condition of the Black Steel Water Tank
Tank After the Application of ReziSafe R230 Top Coat
Tank After the Application of ReziSafe R230 Top Coat

First, a high pressure wash at 3,500psi was performed to remove any loose rust and chloride from the surface. Then, two coats of NanoPrep was applied via airless spray to provide long-term protection. In order to provide UV protection, ReziSafe’s R230 water-based TopCoat was applied by airless spray as the final layer.

Surface Prepared by High Pressure Wash
Surface Prepared by High Pressure Wash
Application of NanoPrep Coating
Application of NanoPrep Coating
Tank After the Application of NanoPrep
Tank After the Application of NanoPrep


NanoPrep provided an easy to use, cost effective and environmentally friendly solution ensuring long term protection against corrosion and underfilm corrosion. Large cost savings were achieved due to the removal of scaffolding requirements (cherry picker used) and no requirement for abrasive blasting, just a high pressure water wash.

Applicator Testimonial

You have a really good product which minimises cost and helps environmentally from two pack and solvent paints used in painting of metals. Normally a job this size and being 10mm black steel would require sand blasting – we followed your specifications and used our 13.5 Honda Pressure Washer and it prepared perfect surfaces for your paint to be applied. Your water based NRX NanoPrep product exceeding my expectations and was very easy to use with a change of a heavier filter and a 19 tip we were able to apply the three coats of undercoat, two top coats with our 20 year old Wagner spraying equipment to achieve a brilliant finish. I will always be happy to use your product and recommend to others.

Bay Painting Services South Australia


NanoPrep’s surface preparation technology allows industrial coating application in areas where it is difficult, cost prohibitive or impossible to perform surface preparation by abrasive grit blasting.

NanoPrep is a one component, waterborne, acrylic co-polymer composition that reacts and cross-links with rusted steel surfaces, clean steel, painted steel, aluminium, and/or galvanised steel surfaces creating superior anticorrosive properties. NanoPrep is non-hazardous, environmentally friendly and non-flammable. Can be applied to damp or dry surfaces as a primer or finish coat.

About Rezitech

Rezitech offers a comprehensive range of industrial protective coatings and epoxy metal repair composites to many different industries including: oil and gas, mining, power, water and waste water, pulp and paper, marine, manufacturing among others.

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