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• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

• Water-based emulsion of styrene-acrylic copolymers formulated to achieve specific characteristics
• Supplied as a single component white liquid
• Excellent adhesion to concrete and cementitious substrates
• Excellent water resistance by the formation of a film
• Economical, easy to use without limited pot life
• For use as a primer before the application of Fosroc Cemtop GP and Fosroc Cemtop XD
• Fosroc Nitoprime 33 is not flammable
• Please refer to the Product Data Sheet for full details of:
  • Properties
  • Application Instructions
  • Cleaning
  • Estimation
  • Storage
  • Precautions

Application Notes

• The Cemtop application is a specialized activity. It requires the use of an approved applicator, who is knowledgeable about the product and who uses equipment approved by Fosroc. Before carrying out the application, the product data sheet for all relevant products should be read carefully, explaining in detail the procedure for priming and subsequent application of the Cemtop
• For most applications, both industrial and commercial, two layers of primer are recommended. If the substrate is extremely porous, a third layer may be required
• For the first coat Nitoprime 33 is diluted 1: 5 (primer: water by volume). Apply with a brush, roller, squeegee or by spraying
• The second coat of Fosroc Nitoprime 33 should be applied diluted 1:3 primer to water by volume after the first coat is dry (approx. 2-4hrs @20°C)
• If a third coat is required dilute Nitoprime 33 1:3 primer to water ratio by volume ensuring the second coat is dry before application
• Puddling should be avoided because this may impair adhesion
• Application of Cemtop can be carried out as soon as the primer is dried

Please see the Product Data Sheet for detailed information.

Limitations

• Nitoprime 33 is suitable for use on sound concrete and cementitious substrates which are free of contamination and have been suitably prepared
• It should not be used on concrete contaminated with oil or having previous paint residue
• Nitoprime 33 and Cemtop should not be applied if the surface or substrate temperature is below 10°C or the ambient temperature during application is below 10°C within 48 hours thereafter

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions and should be applied only by an individual with the necessary expertise and experience. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.