Mapefloor System 33 is a self-levelling, solvent-free epoxy flooring system applied at a thickness: 2-4 mm, for floors with a vapour barrier, for shopping centres, septic rooms and the food industry.
Mapefloor System 33 has passed BS 8204-6: Type 7 floor classification.
This low odour floor paint is recommended as a floor covering system in the foodstuffs, brewery, showroom,chemical and pharmaceutical industries. Mapefloor 33 offers good resistance to the stresses caused by the passage of forklift trucks and rubber-wheeled vehicles.
1. Characteristics of the substrate
Before applying the Mapei Mapefloor System 33 cycle, the substrate on which the coating is to be applied must be carefully analysed. The concrete screed for the substrate must be sound, compact, strong and clean and must be dimensioned according to the static and dynamic loads to which it will be subjected when in service. The flatness must be defined according to the final use.
To get the best results, the following must be checked:
- The roughness of the substrate must be a maximum of 0.5 mm.
- There must be no materials or debris on the substrate which could potentially impede adhesion of the coating, such as: cement laitance; dust or detached or loose material; protective wax, curing products, paraffin or efflorescence; oil stains or layers of dirty resin; traces of paint or chemical products.
Any other kind of material or substance that could affect adhesion of the coating must be removed before starting work. If such materials or substances are present, the substrate must be prepared by carrying out a specific preparation cycle. Please contact our technical team for advice and information.
- The pull-off strength of the substrate must be more than 1.5 MPa.
- The level of moisture in the substrate must be a maximum of 4% and there must be a suitable vapour barrier or no capillary rising damp (check by testing with a sheet of polythene according to ASTM standards).
If these conditions are not met, use Mapei Mapeifloor System 53, otherwise Mapei Mapeifloor System 33 could detach and/or blisters could form in the coating. If all the above conditions are met, Mapei Mapeifloor System 33 may be applied on concrete industrial floors, conventional or polymer-modified cementitious screeds,
shrinkage-compensated screeds such as those made from Mapei Mapecem or Mapei Topcem, old cement terrazzo floors and ceramic floors if prepared according to specification.
2. Preparation of the substrate
It is very important that the surface is prepared as specified to guarantee correct application and the best performance of the Mapei Mapeifloor System 33 epoxy cycle.
The most suitable method to prepare the surface is shot-blasting, or alternatively grinding with a diamond grinding disk. All dust must then be removed with a vacuum cleaner. Do not use chemical preparation methods, such as acid rinsing, or aggressive percussion tools, to prevent damaging the substrate. Any defects present, such as holes, pitting, cracking, etc., must be repaired beforehand using either Mapei Eporip, Mapei Primer SN or Mapei Mapefloor I 300 SL, depending on the width and depth of the defects and cracks.
If the substrate needs to be consolidated, use Mapei Primer MF or Mapei Primer EP (choose the most suitable product according to the porosity of the substrate, which will also have an effect on the consumption rate). If there are deep hollows or highly deteriorated areas on the substrate, repair these areas beforehand using Mapei Mapefloor EP19 three-component epoxy mortar, which may also be used to integrate damaged joints.
If any of the above conditions are not strictly adhered to, the quality of the coating may be poor.
3. Preliminary checks before application
Make sure that all the checks indicated in point 1 “Characteristics of the substrate” have been carried out, and that all the operations indicated in point 2 “Preparation of the substrate” have been carried out correctly. The surrounding temperature must be higher than +8°C (the ideal application temperature is between +15°C and +25°C) and the temperature of the substrate must at least 3°C higher than the dew-point temperature.
4. Preparation and application of the products
Carefully follow the preparation instructions contained in the Technical Data Sheet for each single product used to form the complete system. Mapei Primer SN and Mapei Mapefloor I 300 SL.
Self-levelling coating - 2-4 mm
• Primer (Mapei Primer SN)
Pour component B into component A, and mix with a drill at low speed with a spiral mixing attachment to form a smooth, even paste. While mixing, add approx. 20% by weight of Mapei Quartz 0.5 to the paste as soon as it has been prepared and continue mixing for some minutes to form a smooth, even compound. Pour the product onto the floor to be coated and spread it out evenly and uniformly using a straight trowel or a smooth spreader. Lightly broadcast the product while it is still wet with Mapei Quartz 0.5 (approximately 0.7÷1 kg / m2).
If the surface is still porous, is not compact or if it has open micro-pores due to its high absorbency after the first coat of primer, apply a second smoothing layer of Mapei Primer SN as described above until all porosity has been completely eliminated. If the porosity is not correctly sealed, pinholes and defects could form in the finishing coat of Mapei Mapefloor I 300 SL. Once the Mapei Primer SN has hardened, remove all excess sand with an industrial vacuum cleaner.
Self-levelling coat (Mapei Mapefloor I 300 SL)
Pour the contents of component B into the container of component A, add the coloured paste Mapei Mapecolor Paste at a ratio of 8-9% by weight and mix with a drill at low speed with a spiral mixing attachment to form a smooth, even paste. While mixing, add Mapei Quartz 0.25, up to a maximum ratio of 1:1 by weight to the mixture and continue mixing to form a smooth, even compound.
Pour Mapei Mapefloor I 300 SL prepared as described above onto the floor to be coated and spread it out evenly and uniformly using a straight trowel or a notched spreader with “V”-shaped teeth. While the product is still wet, immediately pass over the surface with a spiked roller to help completely eliminate any air entrained into the product during mixing.
5. Hardening and step-on times
At +25°C Mapei Mapefloor System 33 sets to foot traffic after 16 hours, may be used by light loads after 1 to 2 days and is ready for final use once fully hardened after approximately 7 days. Lower temperatures lead to longer hardening and step-on times.
- Primer SN.
- Mapefloor I 300 SL: Multi-purpose, neutral coloured epoxy treatment for industrial floors
- Mapecolor Paste: Colorant for Mapefloor I 300 SL.
- Quartz 0.25 and 0.5.
- This product is associated with the following NBS Create clause: 45-55-10/410 Flow applied flooring
- Available in 20Kg tins.
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.