Fosroc Nitoprime 33 is the recommended primer for the Fosroc Cemtop range of cementitious self-levelling floor toppings applied to concrete and cementitious substrates.
It is a water-based primer which seals the substrate preventing the release of air by the concrete that could form bubbles in the flooring compound. In addition, it “wets” the substrate, improves adhesion between the substrate and the flooring compound and prevents the Cemtop drying out.
Note: 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.
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
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
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Product Details
7155-904457
Data sheet
Manufacturer
Fosroc
For Use By
Professional Use
For Use On
Concrete Cementitious Substrates
Single, Two or Three Pack
Single
Pack Size
25kg 5kg
Application
Brush Roller Squeegee Spray
Coverage
5 m²/ litre (1L approx 1kg) of concentrate for 2 coats of primer 4 m²/ litre concentrate for 3 coats of primer 3 m²/ litre concentrate for 4 coats of primer
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
Fosroc Nitoprime 33 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
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