Rustoleum 769 / 780 Damp-Proof Rust Primer

UN1263 (Class: 3, Pk Grp: III)
An Anti-Rust Primer for application to sound rusted steel and can be applied to moist surfaces.
Available in 1 and 5 Litres. Tintable to RAL and BS colours
From £28.98 £24.15
In stock
Only %1 left
Product Description

Rust-Oleum Damp Proof Primer is a primer for application to sound rusted steel and can be applied to moist surfaces.

Rust-Oleum 769/780 Anti-Rust Damp Proof Primer is a Metal Primer that is developed for application on hand tool prepared sound rusted steel surfaces. Although primarily intended for brush application it can also be applied by roller or spray. If applied on damp surfaces, the unique fish oil formulation will drive out trapped moisture and air, preventing rust formation beneath the paint layer.

Best Uses

769/780 Damp Proof Primers are excellent at penetrating through rust to the metal, in order to drive out moisture and air and encapsulate the rust. 769 is a red tinted Anti Rust Metal Primer (780 is a grey shade) which has been specifically designed for use on rusted steel surfaces, preventing the formation of rust. Once applied, this Metal Primer is recoatable with virtually any Rustoleum paint.


Damp Proof Primer is designed for use on metal substrates and can be applied by brush, roller or spray. Promain would strongly recommend using a brush for a more desirable finish, however. The 769/780 primers are touch dry within 4 hours and available to recoat after 24 hours.

Surface and Environment

769/780 Damp Proof Primers can be applied to slightly damp surfaces, making it ideal for use in light industrial exposure conditions. 769/780 Anti-Rust Primers should be used on metal surfaces, especially rusted steel, for maximum performance.

Technical Details


  • Minimal surface preparation, manual derusting only
  • Rust inhibitive anti-rust paint
  • Penetrates through the rust to the metal
  • Drives out moisture and air and encapsulates rust
  • Durable corrosion protection
  • Can be used with or without a topcoat
  • Low odour, contains no chromates or lead
  • Overcoatable with virtually any Rust-Oleum paint
  • Heat resistant to 120°C dry heat

Technical Info

Components: One Part
Finish: Matt
Stock Colours: Red Brown, Light Grey RAL 7035
Tintable: Yes to RAL and BS colours. Please note, bespoke tints are non refundable / exchangable.
VOC Content: 375.0g per Litre
Volume Solids: 50%
Suitable Substrates: For direct application on slightly moist or dry metal surfaces
Application Method: Brush, Roller, Air Atomised Spray or Airless Spray
Theoretical Coverage: 14.5 m2 per litre
Wet Film Thickness (WFT): 70 microns
Dry Film Thickness (DFT): 35 microns
Induction Time: -
Pot Life: -
Touch Dry: 4 hours at 20°C
Overcoatable: After 24 hours at 20°C
Fully Cured: 8 days at 20°C
Cleaner / Thinner: Rustoleum Thinner 160
Shelf Life: 5 years
Packaging: Available in 1 and 5 Litres

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