No Sandblasting Allowed? Try CorrVerter® for Rusty Surface Prep

June 1, 2022

Sandblasting, water blasting, and labor-intensive grinding are common methods of restoration and surface prep for rusty metal parts or structures. However, these techniques are sometimes prohibited or not preferred for a variety of reasons. To address this need, Cortec® offers an easy but effective surface prep alternative to abrasive blasting or grinding in the form of CorrVerter® Rust Converter Primer.

CorrVerter® is a fast-drying, water-based one-component primer for rusty surfaces. It contains a unique formulation of chelating agents combined with a high solids waterborne latex that has extremely low water vapor permeability. The combination of these materials converts surface rust into a hydrophobic passive layer, creating a specialty primer with excellent protection against re-rusting of metal surfaces.

How to Apply CorrVerter®
CorrVerter® can be used almost anywhere a tight layer of surface rust is present. Rather than requiring special equipment or labor-intensive abrasion to remove the corrosion, users of CorrVerter® simply need to brush off loose rust before priming right over the surface. Once the surface is primed and passivated, it can be top-coated with either a water-based or solvent-based paint (urethanes, epoxies, acrylics, and alkyds) for further protection and aesthetics. CorrVerter® should be applied at 5.8-8.7 mils (147-221 µm) WFT (wet film thickness) in order to achieve a DFT (dry film thickness) of 3.0-5.0 mils (75-125 µm). It shows excellent 5B adhesion.

Simple Surface Prep-Plus!
In addition to simplifying surface prep, CorrVerter® has several advantages in and of itself. (1) As a water based coating, CorrVerter® is considered to be a more environmentally responsible option and is also easier for workers to clean up. (2) It has an extremely low VOC of 0.1 lbs/gallon (12 g/L). (3) As a single component system, it is much faster and more convenient to use than primers that require the mixing of two parts together.

Examples of CorrVerter® Used Globally
CorrVerter® has countless possible applications and has been used around the world for

Restoration of rusty forklift rental equipment
Restoration of corrosion damaged car rims
Restoration of 200 corroded electrical piers
Priming of sunflower oil reservoirs where blasting was prohibited
Preservation of a steel spiral staircase that would have been damaged by the force of mechanical rust removal
Passivation of rusty equipment and structural surfaces in oil and gas layup projects
Surface prep of rusty rebar for concrete repairs
Restoration/preservation of rusty downhole casing joint pipe exteriors

Make Life Easier for Yourself and Others
For anyone who encounters rusty surfaces on a regular basis, CorrVerter® Rust Converter Primer is an excellent coating to have on hand for easy passivation
and surface prep of corroded metals. Maintenance teams, painters, and concrete contractors will find that CorrVerter
® opens up the exciting prospect of making life easier in the face of corrosion. Contact Cortec® to learn more about this exciting alternative to blasting for yourself or your clients:
https://www.corteccoatings.com/contact-us-2/

Keywords: sandblasting alternatives, CorrVerter, Cortec, rusty surface prep, rust converter primer, concrete repairs, rusty rebar, low VOC coating, environmentally responsible, water-based coating

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