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Rust Inhibitor Primer - For Metal Surfaces Such as Roofs. Promotes Adhesion for Protective Top Coat.

Rust Inhibitor Primer - For Metal Surfaces Such as Roofs. Promotes Adhesion for Protective Top Coat.

Regular price $24.95 AUD
Regular price $37.95 AUD Sale price $24.95 AUD
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GST included. FREE SHIPPING 3 - 8 Business Days

RTT Sealant -  Rust Inhibitor Primer has been designed for rusty roofs, as a part of the Roof Sealing System to prime and protect metal surfaces and enhance the adhesion of our Protective Top Coat. The correct application ensures maximum coverage of the membrane coating. 

This Rust Inhibitor Primer is suitable for bare metal surfaces with rust that has been converted.

Rust inhibitor primers are essential products used in the restoration and maintenance of rusty roofs and metal roofing systems. These primers are specifically formulated to prevent further corrosion and provide a stable base for subsequent coatings, ultimately extending the lifespan of the roof. Let's delve into the features and benefits of rust inhibitor primers for rusty roofs and metal roofing, emphasising their importance and effectiveness in protecting these surfaces.

Importance of Rust Inhibitor Primers:
Corrosion Protection: Rust inhibitor primers create a protective barrier on the surface of metal roofs, preventing moisture and oxygen from reaching the underlying metal substrate. This barrier effectively inhibits the formation and spread of rust, minimising corrosion damage over time.

Surface Preparation: Rusty roofs often have uneven surfaces and areas of corrosion that need to be addressed before applying a new coating. Rust inhibitor primers help prepare the surface by neutralising existing rust and providing a smooth, stable base for subsequent coatings, ensuring better adhesion and durability.

Long-Term Protection: By effectively inhibiting rust formation, these primers help prolong the lifespan of metal roofs, reducing the frequency of maintenance and repairs. This not only saves time and money but also preserves the structural integrity of the roofing system.

Improved Aesthetics: Rust inhibitor primers can enhance the appearance of rusty roofs by providing a uniform base coat that improves the adhesion and appearance of the final topcoat. This results in a more aesthetically pleasing finish that enhances the curb appeal of the building.

Key Features and Benefits:
Anti-Corrosion Properties: Rust inhibitor primers contain corrosion-inhibiting compounds such as zinc phosphate or rust converters that chemically react with rust to form a protective barrier. This barrier prevents further oxidation of the metal substrate, effectively stopping the corrosion process.

Adhesion Promoters: These primers are formulated with adhesion promoters that help the coating adhere tightly to the metal surface, ensuring long-lasting protection against corrosion and environmental damage.

Fast Drying: Many rust inhibitor primers have fast-drying formulas that allow for quick application and recoating, minimising downtime and allowing for faster completion of roofing projects.

Compatibility: Rust inhibitor primers are compatible with a wide range of topcoat materials, including acrylic, epoxy, and polyurethane coatings, providing flexibility in coating selection and application.

Versatility: These primers can be used on various types of metal roofing materials, including steel, aluminum, and galvanised metal, making them suitable for a wide range of applications.

Environmental Considerations: Some rust inhibitor primers are formulated with low volatile organic compound (VOC) content, reducing emissions and environmental impact during application.

Rust inhibitor primers play a crucial role in protecting rusty roofs and metal roofing systems from corrosion and deterioration. By providing a durable, corrosion-resistant coating, these primers help extend the lifespan of metal roofs, improve aesthetics, and reduce maintenance costs. Whether it's for restoring an existing rusty roof or protecting a new metal roofing installation, rust inhibitor primers are an essential component of any roofing maintenance or restoration project.

Suitable for

- New Steel

- Old Steel

- Glavanised Iron

- Alloys

- Non-ferrous metals


Allow any RTT Waterproof Sealant to cure for at least 24 hours before applying this Sealer.

Disconnect downpipes prior to application and leave disconnected until rinsing either by water or heavy rain.

Wash the entire surface with water and allow to dry. Ensure the surface is free of any oils, minerals or loose materials before application.



Stir thoroughly before use. Apply to painted surface by brush, roller or airless spray machine. One coat @ 100 - 200 micron is sufficient, provided there is full coverage. Primer is ready for top coating after 2 – 4 hours @ 25°C. Allow more time in cooler conditions. Use in a well ventilated area. Do not immerse.


Apply at a rate: 6m²/L

- 15L Bucket covers ≈ 90m2

- 10L Bucket covers ≈ 60m2

- 4L Bucket covers ≈ 24m2

- 2L Bucket covers ≈ 12m2

- 1L Bucket covers ≈ 6m2

- 0.5L Bucket covers ≈ 3m2

On Coat is suffiecint.


Store in a cool dry place. Keep out of reach of children.

This product is a Non-flammable-liquid and does not present any storage or transportation hazards.

Safety Features

- Water-Based

- Eco-friendly

- Safe for you, your family, pets and plants

-No solvents or VOC (volatile organic compounds)

- Non-flammable

- Usable indoors and outdoors


Use water if product is wet and solvents if product is dry.


We ship our Products throughout Australia and New Zealand.  



Expected shipment duration (within AUS):  3-8 Business days (Mon -Fri)

For larger orders, please contact us at or use the Contact form.

At RTT Sealant, we offer FREE SHIPPING on all orders within Australia. We understand that getting your items to you quickly is important, so we make every effort to process and ship your order as soon as possible.

Orders are typically processed within 1-2 business days and shipped via Australian Post / Transdirect / Sendle. Once your order has shipped, you will receive a shipping confirmation email with a tracking number.

Please note that we are not responsible for any delays caused by the shipping carrier. If you have not received your order within the estimated delivery time, please contact us at [email or phone number] and we will do our best to assist you.

Return Policy

We want you to be completely satisfied with your purchase from RTT Sealant. If for any reason you are not satisfied, you may return your items within 30 days of receipt for a full refund or exchange.

To initiate a return, please contact us at or use the Contact form to request a return label. Once we receive your returned items, we will process your refund or exchange as soon as possible.

Please note that all items must be returned in their original condition.

We do not accept returns of final sale items.

We will be responsible for the cost of return shipping.

If you received a damaged or defective item, please contact us immediately at and we will do our best to assist you.

Thank you for choosing RTT Sealant for your shopping needs! If you have any questions about our shipping or return policy, please contact us. We're here to help!


We strive to serve our customers with the best products. Every single product that you choose is thoroughly inspected, checked for defects and packaged with utmost care. We do this to ensure that you fall in love with our products.

Sadly, there are times when we may not have the product(s) that you choose in stock or may face some issues with our inventory and quality check. In such cases, we may have to cancel your order. You will be intimated about it in advance so that you don’t have to worry unnecessarily about your order. If you have purchased via Online payment (not Cash on Delivery), then you will be refunded once our team confirms your request.

We carry out a thorough quality check before processing the ordered item. We take utmost care while packing the product. At the same time, we ensure that the packing is good such that the items won’t get damaged during transit. Please note that RTT Sealant is not liable for damages that are caused to the items during transit or transportation.

We will revise your returned product as soon as we receive it and if it follows the guidelines addressed above, we will proceed to issue a refund of your purchase. Your refund may take a couple of days to process but you will be notified when you receive your money.


Your Consent

By using our website, registering an account, or making a purchase, you hereby consent to our Return & Refund Policy and agree to its terms.


Contact Us

If, for any reason, You are not completely satisfied with any good or service that we provide, don’t hesitate to contact us and we will discuss any of the issues you are going through with our product.


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Contact us on or use the Contact form and let's discuss your project!


  • Hassle-Free Exchanges

    Not happy with the product or received the wrong product? No worries. Contact us at and we will do our best to find the best solution for you.

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