Coo-Var Rust Converter - 250ml

Don’t let stubborn rust slow down your project. Coo-Var Rust Converter is the smart solution for treating iron and steel surfaces where rust can't be completely removed. Designed for real-world conditions, it chemically stabilises rust, stopping the corrosion process in its tracks and creating a sound surface ready for painting.

Whether you're dealing with old metalwork, industrial structures, or hard-to-reach areas, Coo-Var Rust Converter makes restoration easier, faster, and more reliable. Just apply it directly to the rusted area no need for total rust removal and it does the heavy lifting for you.

• Low sheen finish
• Suitable for metal surfaces
• Stops the corrosion process
• Prepares the surface for painting

Proper preparation is essential to ensure Coo-Var Rust Converter performs effectively and delivers long-lasting protection. Follow these guidelines for best results:

• Clean the surface thoroughly, all surfaces must be clean, dry, and free from dirt, dust, grease, oil, and other surface contaminants.
• Wash down using suitable degreasers or cleaners if necessary.
• Light to Medium Rusted Steel should be prepared by using a wire brush or power tools (in accordance with SSPC-SP3 standards). Heavily Weathered or Corroded Steel For more severe corrosion, surfaces should be treated by: High-pressure water blasting or wet abrasive blasting, following SSPC-SP6 (Commercial Blast Cleaning) standards.
• For optimal performance, aim to expose approximately 10% clean, bright metal within the rusted area. This helps ensure strong adhesion and effective conversion of remaining rust.

Following these preparation steps will help maximise the effectiveness of Coo-Var Rust Converter and provide a solid foundation for any subsequent coatings.

To ensure maximum performance and rust-stopping power, follow these application guidelines carefully.

• Do not thin the product. Stir or shake lightly before use to ensure an even consistency avoid over-mixing or shaking vigorously.
• Apply only when humidity is between 40% and 90% and ambient temperature is above 5°C
• On warm or sunny days, metal surfaces can become hot. To prevent flash drying and ensure proper penetration, lightly mist the surface with clean water to cool it before application.
• Decant the required amount into a separate container before use. Never return unused product to the original bottle, as this can cause contamination.
• Apply using a brush or deck scrubber for best results. These tools help work the product into the rusted surface, promoting deeper penetration and better rust conversion.
• Ensure an even coat is applied, fully covering all rusted areas.
• It will appear Initially milky / white when being applied and will appear navy / black when treatment is complete.
• Allow the converter to dry fully before applying any topcoat. Refer to the product label for specific drying times.

Proper application of Coo-Var Rust Converter creates a stable, paintable surface and extends the life of your metalwork by halting the rusting process in its tracks.

Q. Do I need to remove all the rust before applying Coo-Var Rust Converter?

A. No, Coo-Var Rust Converter is designed for situations where not all rust can be fully removed. However, for best results, you should remove loose rust, mill scale, and flaking paint using a wire brush or power tools. Exposing around 10% bright metal in the rusted area helps ensure optimal performance.

Q. Can I paint over the rust converter, and how long should I wait before doing so?

A. Yes, once the rust converter has dried completely, you can apply a suitable topcoat. You should wait at least 8 hours before overcoating with water-based paints, and 24 hours for solvent-based or other types of coatings.

Delivery - All orders placed on a working day before 3pm will be dispatched on the same day for next working day delivery. Orders placed before 3pm on Friday will be delivered on Monday (excluding bank holidays). Orders placed on weekends and Bank Holidays will be dispatched on the next working day. 

Delivery of Tinted Products - Tinted paints are dispatched in line with our express order process, shown below. However, due to their bespoke nature, please allow up to an additional 5 working days to accommodate any potential courier delays or delivery issues before receiving a refund or replacement.

We strongly suggest customers avoid booking tradespeople until they receive their order. Next Day Paint will not be held liable for any costs incurred due to order processing errors, delivery delays, or other issues that may result in financial loss.

Delivery Options

Express Shipping - £3.99

Order by: 3pm, Monday - Sunday

Expected delivery: Next working day, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

AM Delivery - £12.99

Order by: 2pm, Monday - Sunday

Expected delivery: Next working day by 2pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following AM

Late Cut-Off - £5.99

Order by: 4pm, Monday - Friday 

Expected delivery: Next working day, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

Saturday Delivery - £9.95

Order by: 2pm, Friday 

Expected delivery: Saturday, 8am - 9pm

Standard Delivery (Out of Zone Postcodes Only) - £6.99

Order by: 3pm, Monday - Sunday 

Expected delivery:  3-5  working days, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

We do not deliver to the Channel Islands or the Republic of Ireland

Certain postcodes delivery times and charges may vary please head to the cart to see your available delivery options.

Returns

We offer a 14 day money back guarantee for all goods shipped correctly that are not required. If the item is not required, please send the item back for a full refund in its original condition, unused with its original packaging. Please note return for unwanted item is at your own expense.

Contact us as soon as possible to inform us you will be returning the product either by a contact form or by calling our team on 0161 960 0217.

All tinted paint purchases are final and non-refundable. If you're unsure about your selection, please refer to the product listing or contact us for guidance before ordering. Once mixed, tinted paints cannot be returned or refunded, regardless of delivery delays or changes in circumstances.

While we aim to meet delivery timelines, we are not responsible for delays caused by couriers, weather, or other external factors.

We recommend ordering samples or colour charts before purchasing. While we strive to represent colours accurately, screen settings and surface types can affect appearance. Opened tins cannot be returned due to dissatisfaction with colour.

For non-tinted products, we offer a 14-day money-back guarantee. Items must be returned unused, in original condition and packaging, at your own expense.

Damaged Paint

Please visit our damages page, where we can help resolve the issue for you. 

Incorrect Item

If we have sent you a different item from what you ordered, we will be happy to organise an exchange for the correct goods at no extra charge to yourself, please get in touch to organise this.

Faulty Items

Faulty items can be refunded or exchanged within 30 days. All returns are tested, and if no fault is found, no refund will be issued you'll have the option to have the item returned. For faults discovered after 30 days, please contact the manufacturer for further support.