Fosroc Nitoprime Zincrich Plus

UN1263 (Class: 3, Pk Grp: III)
A single pack zinc primer for use with Fosroc's Renderoc repair systems.
Available in 800ml and 1.9 Litres
From £48.43 £40.36
In stock
Only %1 left
Product Description

Fosroc Nitoprime Zincrich Plus is a single component zinc primer for use with Fosroc's Renderoc repair systems.

Best Uses

Fosroc Nitoprime Zincrich Plus is the recommended anti-corrosion primer for exposed steel reinforcement for use with Fosroc concrete repair mortars. It is fully compatible with all Renderoc mortars and fluid micro-concretes.

  • ‘Active’ zinc-rich system combats corrosion by electrochemical means
  • Formulated for use with Renderoc repair products
  • Single component product — easy to use with no restrictive pot life
  • Economical - single component ensures almost no waste

Fosroc Nitoprime Zincrich Plus is supplied as a single component grey-coloured liquid based on metallic zinc.


Expose fully any corroded steel in the repair area and remove all loose scale and corrosion deposits. Steel should be cleaned to a minimum of ST3 standard, paying particular attention to the back of exposed steel bars. This should be achieved by suitable mechanical means, e.g. powered wire-brushing, high pressure jetting or alternative equivalent. Where corrosion has occurred due to the presence of chlorides, the steel should be high-pressure washed with clean water immediately after preparation to remove corrosion products from pits and imperfections within its surface.

The application of Nitoprime Zincrich Plus must take place as soon as possible to a dry steel surface after completion of the preparation work but always within 3 hours. The material should be stirred thoroughly before use in order to redisperse any settlement.

Apply one full and unbroken coat of Nitoprime Zincrich Plus by suitable brush, making sure that the back of exposed steel reinforcing bars are properly coated. A small brush is generally more suitable for this purpose. Allow to dry fully before continuing. If any doubt exists about having achieved an unbroken coating, a second application should be made as soon as the first coat is fully dry (generally after 2 hours).

The application of concrete repair materials may proceed as soon as the Nitoprime Zincrich Plus is touch dry (generally 1 hour - see data sheet). The primed surfaces should not be left exposed to the elements for longer than necessary before overcoating or application of the repair material. Nitoprime Zincrich Plus will, however, protect steel under clean interior exposure conditions for a period of several months.

In non aggressive exterior environments, a maximum interval of 14 days will be tolerated but in industrial and/or marine environments this interval should be reduced to the practical minimum. If the 14 days in an external environment has been exceeded, inspect the coating for signs of damage, remove any dust by vacuuming or utilising oil free compressed air. If damage is detected, remove the affected areas and re-apply Nitoprime Zincrich Plus, lapping onto adjacent areas by a minimum of 20mm.

Low temperature working

The minimum application temperature is 5°C. The material should not be applied when the substrate and/or air temperature is 5°C and falling, or is less than 3°C above the dew point. At 5°C static temperature or at 5°C and rising, the application may proceed.

Technical Details


  • London Underground Approved. LUL APR No. 1880
  • Nitoprime Zincrich Plus complies with LU Standard 1-085 ‘Fire Safety Performance of Materials’
  • BS EN 1504-7: Reinforcement corrosion protection method 11.1

Technical Info

Components: Single Pack
Type: Zinc Rich Primer
Stock Colours: Grey
Tintable: No
VOC Content: 495 g/L
Volume Solids:
Suitable Substrates: Exposed Steel Reinforcement
Application Method: Small Brush
Theoretical Coverage: 8 m2 per litre
Wet Film Thickness (WFT): 100 microns
Dry Film Thickness (DFT): 40 microns
Induction Time: -
Pot Life: -
Touch Dry: 1 hour at 20°C
Overcoatable: After 2 hours at 20°C
Fully Cured:
Cleaner / Thinner: Nitoprime Zincrich Plus should be removed from tools, equipment and mixers with Fosroc Solvent 102 immediately after use.
Shelf Life: 12 months if kept in a dry store in the original, unopened containers.
Packaging: Available in 800ml and 1.9 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

Recommended products to use