Cortec CorrVerter® Rust Converter Primer
Cortec CorrVerter® Rust Converter Primer
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CorrVerter® Rust Converter Primer can combat rusted surfaces effectively. It is a cutting-edge, fast-drying, and water-based one-coat system.
With these features, it offers unparalleled performance and surpasses conventional primers. CorrVerter® converts rusted surfaces into a hydrophobic passive layer and ensures protection against corrosion.
CorrVerter® combines powerful chelating agents and PVDC resins. These components penetrate deep into the rusted metal and form a stable, protective barrier. This barrier halts the corrosion process.
Preparation and Application for Rust Converter Primer
- Preparing the Surface. Remove grease, dirt, drawing compounds, fingerprints, oil, fingerprints, loose rust, rust inhibitors (except those approved by Cortec®), or other surface contaminations. You can use a wire brush or sandpaper to clean the surface.
- Application. Recommended dew point is at least 5 °F (2 °C) but still lower than the air temperature. Use power agitation to maintain a homogenous consistency with a cylindrical cage type or a handheld drill mixer. For thinning requirements, dilute CorrVerter with water up to 15%. You can spray, brush, roll, or dip metal into the primer, depending on your preference. If you need to apply topcoat on your metal surface, use only Cortec products with high-performance coatings. In case, you want to use other brands and products, make sure to check compatibility for optimum results. Some topcoat brands may render your converter primer useless.
- Cleanup. Proper cleanup of tools and equipment after using CorrVerter® Rust Converter Primer is essential. This preventive task will maintain their longevity and ensure successful future applications. When the paint is still wet, clean tools and equipment immediately with water. This step helps prevent the primer from hardening and becoming challenging to remove. In case the primer has dried on the tools or equipment, you can use butyl cellosolve or methyl ethyl ketone (MEK) for cleaning purposes. However, follow the manufacturer's safety recommendations and guidelines when using any solvent for cleaning. Always use solvent in well-ventilated areas.
- Setting Up the Equipment. You can apply CorrVerter® Rust Converter Primer using various equipment setups.
HVLP and/or Conventional Spray
When using HVLP (High Volume Low Pressure) or Conventional Spray systems, consider the following details:
- Nozzle Tip: Use a nozzle tip size ranging from 0.02" to 0.11" (0.5-2.8 mm) depending on the specific pressures and viscosity of the product. The appropriate nozzle tip selection ensures an optimal application rate and coverage.
- Air Pressure: Maintain an air pressure range of up to 55 psi. This pressure setting helps achieve the desired atomization and ensures a smooth application process.
- Fluid Pressure: Set the fluid pressure at 10 psi to ensure a consistent flow of the CorrVerter® Rust Converter Primer during the application.
- Fluid Hose: Use a fluid hose with an inner diameter (I.D.) of ⅜" (0.95 cm) and a maximum 50 feet (15.2 m) in length. You can also use 0.64 cm I.D. fluid hose, but you’ll have to adjust the pressure. It is important to use a hose of sufficient diameter and length to avoid pressure drop and ensure a steady supply of the product. The pot containing the primer should have dual control. Keep the spray gun elevated but not higher than the pot of primer to maintain consistent application performance.
Air-Assisted Airless or Airless
For more demanding applications, you can use air-assisted or airless setups to apply CorrVerter® Rust Converter Primer. The following details are essential for this equipment arrangement:
- Nozzle Tip Size: Choose a nozzle tip size ranging from 0.38-0.89 mm or 0.015 to 0.035 in inches depending on the pressures and fluidity. This selection ensures effective atomisation and coating consistency.
- Pressure: Set the pressure to a minimum of 1800 up to 2500 psi to achieve the proper spray pattern and coverage for the Rust Converter Primer.
- Hose: Use a minimum 0.95 cm or an equivalent ⅜" I.D. hose, and if needed, you can attach 0.64 cm or an equivalent ¼" I.D. whipping section to facilitate easier application. A suggested maximum 100 feet for the hose length allows for efficient and flexible coverage.
The appropriate equipment setup will largely depend on the specific project requirements, the surface to be coated, and the application conditions. Always follow the manufacturer's recommendations and guidelines for the best results.
Product Specifications (.PDF)
Frequently Asked Questions
• What exactly is Cortec Corrverter Rust Converter Primer, and why should I consider using it?
Cortec Corrverter is a smart, water-based primer designed to tackle rust head-on. It's more than just a coating; it actually converts existing rust into a stable, passive layer, effectively stopping further corrosion in its tracks. You should consider it because it saves you a lot of the arduous traditional rust removal work, like sandblasting, and sets a fantastic foundation for new paint.
• How does Cortec Corrverter actually work its magic on rusty surfaces?
It's pretty clever! Cortec Corrverter uses a unique formulation that includes chelating agents. These agents chemically react with the rust (iron oxides) on the surface, transforming them into a stable, hydrophobic, and passive layer. Think of it like a chemical makeover for your rust, preparing it perfectly for a new topcoat and preventing new rust from forming.
• Is this product suitable for all types of rusty metal, or are there specific metals it's best for?
Cortec Corrverter Rust Converter Primer is primarily formulated for ferrous metal surfaces, which means anything made of iron or steel. So, if you're dealing with rust on steel structures, machinery, or even cast iron, this product is an excellent choice.
• What's the main difference between Cortec Corrverter and a regular rust-inhibiting primer?
The key difference is that Cortec Corrverter actively converts the rust, changing its chemical composition, whereas a regular rust-inhibiting primer typically just forms a barrier over the rust. Corrverter’s transformative action means you’re not just covering up the problem, you’re addressing it at a fundamental level for better long-term protection.
• Does Cortec Corrverter contain any harsh chemicals like tannic or phosphoric acids, which I know some other converters do?
No, that's one of its really appealing features! Cortec Corrverter is formulated without tannic or phosphoric acids, which are often found in other rust converters. This makes it a more user-friendly option and contributes to its compatibility with a wider range of topcoats.
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• Before I apply Cortec Corrverter, what kind of preparation does the rusty surface need?
While it's designed for less-than-perfect surfaces, you'll still want to do a bit of prep. The most important step is to remove any loose, flaky rust with a wire brush. You should also ensure the surface is free from grease, oil, dirt, or any other contaminants that could hinder adhesion. A good high-pressure water wash to remove excess salt is also recommended if applicable.
• Do I need to remove all the rust completely before applying Cortec Corrverter, or is some rust okay?
This is where Cortec Corrverter really shines! You absolutely do not need to remove all the rust. In fact, it's designed to work directly on tightly adhering rust. Just get rid of the loose stuff, and the product will do the heavy lifting of converting what's left.
• Can I apply Cortec Corrverter to damp surfaces, or does the metal need to be perfectly dry?
Interestingly, Cortec Corrverter has some flexibility here; it can be applied to both dry and slightly damp surfaces. This makes it quite forgiving if you're working in conditions where achieving a perfectly dry surface is a challenge.
• What tools or equipment will I need to apply Cortec Corrverter effectively?
You've got options! You can apply it using a brush, roller, or even a spray gun. For ensuring good penetration into the existing rust, a brush application is often preferred. Just make sure your tools are clean before you start.
• Is it necessary to mix the product before use, or can I just open the container and start painting?
Absolutely give it a good, thorough mix before you start! This ensures that all the active ingredients are evenly distributed throughout the product, guaranteeing consistent performance and conversion.
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• How thick should I apply the Cortec Corrverter to ensure proper rust conversion and protection?
You're aiming for a dry film thickness of about 3-5 mils, which translates to a wet film thickness of 75-125 microns. Applying it evenly, without drips or runs, is key.
• What's the ideal temperature range for applying Cortec Corrverter to get the best results?
For optimal performance and curing, it's best to apply Cortec Corrverter when the surface temperature is at least 5°F (2°C) above the dew point. Generally, temperatures between 7°C and 35°C are ideal.
• How long does it typically take for Cortec Corrverter to dry to the touch, and when can I handle the treated item?
You'll usually find it's touch dry within 2-3 hours. For handling, you're looking at about 4-6 hours, but this can vary depending on environmental conditions like temperature and humidity.
• When should I apply a second coat of Cortec Corrverter, if one is needed for badly corroded surfaces?
If you're dealing with particularly heavy or badly corroded areas and feel a second coat is necessary for maximum protection, it's recommended to apply it within 20-30 minutes of the first coat.
• How long do I need to wait after applying Cortec Corrverter before I can apply a topcoat?
You'll want to give it ample time to cure properly before applying a topcoat. It's generally advised to wait at least 12-24 hours. The surface is recoatable after 24 hours for best results.
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• Will the product change color as it works, and does the color change indicate anything important?
Yes, it typically changes from a white or light color to a dark brown or black as it cures and the rust conversion process takes place. While the degree of darkening can vary, it doesn't affect the primer's performance or its ability to continue converting rust.
• I have a rusty car chassis; is Cortec Corrverter a good solution for automotive rust?
Absolutely, Cortec Corrverter is a fantastic choice for automotive rust. It provides a durable base for painting and helps extend the life of your vehicle's metal components, especially on chassis and underbody parts where proper sandblasting might be difficult.
• Can I use Cortec Corrverter for marine applications, like on boat trailers or metal boat parts?
Yes, it's well-suited for marine environments. Its ability to create a hydrophobic passive layer offers excellent corrosion protection, which is crucial in salty and damp conditions like those found in marine settings.
• What about industrial machinery or equipment that's showing signs of rust – would this product be effective?
Definitely! Cortec Corrverter is highly recommended for industrial maintenance. It's especially useful for situations where traditional cleaning methods like sandblasting are impractical due to site restrictions or the size of the machinery.
• I've got some rusty garden furniture and metal tools; is Cortec Corrverter suitable for home and garden use?
For sure! It's an excellent product for extending the life of your rusty garden furniture, metal railings, tools, and other household metal items. It's a much easier way to restore them than extensive scraping or grinding.
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• Can Cortec Corrverter be used on outdoor metal structures that are constantly exposed to the elements?
• I'm thinking of using it on a rusty metal roof or shed. Is that a recommended application?
While it's excellent for various metal surfaces, for large areas like roofs or sheds, ensure proper surface preparation to remove loose rust. The product is effective, but for critical structural elements, always consider professional advice.
• How well does paint adhere to a surface treated with Cortec Corrverter?
Paint adhesion is generally excellent with Cortec Corrverter. It creates a stable, prepared surface that provides a strong bond for subsequent topcoats, contributing to a smooth and durable finish.
• Can I use both water-based and solvent-based paints as topcoats over Cortec Corrverter?
Yes, this is one of its great advantages! Unlike some other rust converters, Cortec Corrverter is compatible with both water-based and solvent-based topcoats, giving you a lot of flexibility in your choice of finish paint.
• How long can I expect the corrosion protection from Cortec Corrverter to last?
Cortec Corrverter is designed to provide long-term corrosion protection. When applied correctly and ideally followed by a suitable topcoat, it offers significant durability and resistance against re-rusting, often exceeding 1000 hours in salt spray tests.
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• What's the typical coverage rate of Cortec Corrverter per liter or gallon?
You can generally expect coverage of about 167-278 square feet per gallon (or 4.2-5.6 square meters per liter), depending on the surface porosity and application method.
• Is Cortec Corrverter considered environmentally friendly?
Yes, it's formulated to be environmentally friendly. It's water-based, has very low VOC (Volatile Organic Compound) content, and is non-flammable and non-combustible, which are all positive aspects for both the user and the environment.
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• What should I do if I notice an area hasn't fully converted after the first application?
If you see areas that haven't darkened sufficiently, it likely means the coating wasn't thick enough in those spots. You can apply a second coat to those specific areas within the recommended recoat window to ensure complete conversion and protection.
• How should I clean my tools after using Cortec Corrverter?
Since it's a water-based product, cleaning your tools is relatively straightforward. You should be able to clean them with water immediately after use, before the product has a chance to fully dry and harden on them.
• What's the best way to store leftover Cortec Corrverter to maintain its shelf life?
To ensure the product remains effective, store it in its original, tightly sealed packaging, indoors, and away from direct sunlight. It's crucial to protect it from freezing temperatures, as it is a water-based product. The typical shelf life is one year when stored correctly.
