Can you use this over the top of old paint on metal external stairs

No, this product wouldn't be suitable for application to previously painted metal. If you can confirm the type of metal you are looking to re-paint, we maybe able to offer an alternative, you can e-mail Technical@rawlinspaints.com to confirm.

Im looking to use this on the inside of automotive panels and pillars as part of a restoration project. Eventually, i intend to prime the whole car in an epoxy primer, will this be compatible? If so, can you recommend an epoxy primer to use too?

Assuming the panels are steel this product will be suitable to use as a Primer to be applied in accordance with the technical data sheet. This can be over coated with either Rust-Oleum CombiColor Original or Rust-Oleum 7500 Alkythane as the finishing coat. These products are both available to 4400+ RAL, BS & NCS Colours in a satin or gloss finish. The manufacturer doesn't recommend applying an Epoxy Primer over Rust-Oleum 769/780 Damp-Proof Rust Primer.

Is this primer and the Rust-Oleum 7500 Alkythane topcoat appropriate for use on Cast Iron? Thanks

Yes assuming the cast iron is bare, clean, dry, sound and free from rust or corrosion.

Can I paint acrylics over this primer?

The recommended topcoat for this primer is Rust-Oleum 7500 Alkythane . If you choose to use any other type of paint we would recommend to test on a small area for compatibility and adhesion prior to full application.

Hello, Is the 769/780 suitable for use when repainting the inside of a steel boat hull? This will be in January/February and although de-rusted as far as possible will probably still be damp and no doubt cold! Also, after it has cured can it be over coated with a two pack epoxy type paint… this type of top coat would be preferred to protect against oil, fuel and other chemical spills Thank you nin anticipation, Nigel.

Unfortunately no this product would not be suitable for this application. Assuming application will take place when the substrate temperature is above 5°C and the relative humidity is less than 80% with the temperature 3 degrees above the dew point so no condensation forms you can consider the two pack option below. All rust and corrosion must be removed, the area should be clean, dry, sound and prepared as detailed in the technical data sheet then Teamac High Performance 2 Pack Zinc Phosphate Primer applied followed by two coats of Teamac High Performance Polyurethane Topcoat . This is available in many RAL, NCS or BS colours in a gloss finish.

Hello! Is it possible to paint over this primer with Rust-Oleum High temperature resistant paint (1078)? Thank you!

Assuming the substrate will be exposed to dry heat, no this primer would not be suitable for this application. Rust-Oleum Heat Resistant Paint 750°C is self priming for many substrates.

Can you use any brand / type of thinners with Rust-Oleum 769/780 Damp-Proof Rust Primer? Many thanks Mark.

We would recommend using the Rust-Oleum thinners as listed on the technical data sheet.

Rust-Oleum 769/780 Damp-Proof Rust Primer | Rawlins Paints

Rust-Oleum 769/780 Damp-Proof Rust Primer

Reference 769.1

Brand Rust-Oleum

Search ID RUS544

Available in a wide range of colours.
Ideal for application on slightly damp or dry metal surfaces.
Requires minimal surface preparation.
Durable corrosion protection.
Optimal rust inhibition.
Certified for C4 exposure conditions (ISO 12944) and VOC compliant (375 g/l).

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ColourPicker Explained

In general we sort colours for products into 2 main groups - ‘Ready Mixed’ and ‘Tinted’.
Tinted colours will always be more expensive than Ready Mixed colours as they need to be produced at the time of order using a tinting machine dispensing colourant into a base*.
During busy periods, this means that tinted colours could take longer, for example – a ready mixed colour ordered on a 3-5 day delivery might arrive within 3 days, however a tinted colour might take the full 5 days to arrive.

To find Ready Mixed colours, search "ready mixed" or select the Ready Mixed 'colour chart'. To see Tinted colours select a colour chart such as RAL, BS, NCS, etc. or search for a colour/hue to see available or related options.

To ensure fair pricing, we split colours into ‘Price Bands’ to group together similar priced colours. If you wish to search for the cheapest tinted colours, always select Price Band 1.

We make every effort to list all available colours, however we also offer a colour match service which can be accessed by contacting our Technical Team on 0113 245 5450 (option 2) or emailing [email protected]

*Colours are sold in the nearest tin size but actual paint volume per tin may vary up to 10% depending on colour

Colour reproduction of the Products on the Site is limited by the technology used to deliver web pages and by the colour representation of Customer’s own monitor and computer set-up. We have made every effort to display as accurately as possible the colours of our Products but we cannot guarantee that the colour shown on Customer’s monitor’s display will accurately reflect the colour of the Product on delivery. We recommend that Customer first purchases the smallest Product available or access an industry standard colour chart in person (and not digitally) to ensure that the colour is acceptable for its purposes.

7 questions about the product

Description

Rust-Oleum 769/780 Damp-Proof Rust Primer - Corrosive Protection Primer

Rust-Oleum 769 Damp-Proof Rust Primer is a single pack primer based on a fish oil containing alkyd. This unique formulation allows direct application on slightly moist or dry metal surfaces, making it ideal for rusted steel surfaces. The primer penetrates rust to expel moisture and air, encapsulating rust for superior protection.

Application & Surface Preparation

Before applying the primer, ensure surfaces are free from grease, oil, and other contaminants using a cleaner or high-pressure steam. Remove loose rust and coatings by scraping, wire brushing, or light sanding. The primer can be applied with a brush, roller, or spray, with recommended thinning using Rust-Oleum Thinner 633 for brush and roller, and Thinner 641 for spray applications.

Brush: Dilute up to 10% with Thinner 633.
Roller: Dilute up to 10% with Thinner 633, using medium pile rollers.
Airless Spray: Dilute up to 5% with Thinner 641, using a tip size of 0.013-0.015 inches.
Air-atomised Spray: Dilute 10-20% with Thinner 641, using a tip size of 1.2-1.8 mm and 2-4 bar pressure.

The primer is touch dry within 4 hours and can be recoated after 24 hours. Ensure all tools are cleaned with Rust-Oleum Thinner 160 or mineral spirits after use.

Why Choose Rust-Oleum 769?

Rust-Oleum 769 is a trusted choice for rust protection, combining ease of application with long-lasting results. Its fish oil-based formula has been proven since 1921 to provide effective rust inhibition. Suitable for light industrial exposure, this primer ensures your metal surfaces are well-protected against the elements.

Health and Safety

Always refer to the safety data sheet for comprehensive health and safety information. The product is classified under UN1263, with hazard statements including H226 (Flammable liquid and vapour) and H336 (May cause drowsiness or dizziness). Proper ventilation and protective gear are recommended during application.

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Rust-Oleum 769/780 Damp-Proof Rust Primer

Rust-Oleum 769/780 Damp-Proof Rust Primer

Product customisation

Rust-Oleum 769/780 Damp-Proof Rust Primer - Corrosive Protection Primer

Application & Surface Preparation

Why Choose Rust-Oleum 769?

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