Mapei Mapefloor CPU / TC

Mapei Mapefloor CPU+/TC is an antimicrobial, easy to sanitize, polyurethane-cement topcoat for Mapefloor System CPU+/DP and Mapefloor CPU+ products range.

Best Uses

Mapefloor CPU+/TC provides top-coat layers for products and systems of Mapefloor CPU+ range featuring:

• Fast hardening
• Good chemical resistance
• Thermal shock resistance like the one of the Mapefloor CPU+ system on which it is applied, provided the application is done within 12 hours from the hardening of the base layer
• Resistance to abrasion
• Impermeability to liquids in general
• Odourless during application and hardening
• Low VOC content
• No bacterial growth
• Easy to sanitize
• Non-tainting for food
• Fast return to service
• Ease for warehousing management; components A, B and Mapecolor CPU+ are common to whole Mapefloor CPU+ product range

Mapefloor CPU+/TC is used as the final layer of Mapefloor System CPU+/DP multilayer system or as an optional finishing coat of systems made with the Mapefloor CPU+ range of products. Mapefloor CPU+/TC can also be used as a coating on concrete and cementitious surfaces in general such as
walls, pillars, conduits, connection covings between walls and floors, etc.

Some application examples include:

• Finishing layer for polyurethane-cement systems made with smooth Mapefloor CPU+/MF or fully broadcasted with quartz sand as provided in Mapefloor System CPU+/DP, even in wet operating conditions
• Finishing layer of covings for example between walls and floors, made with Mapefloor CPU+/COVE
• Easy to clean and chemical resistant protective coating of concrete walls or cement plaster in food, chemical, pharmaceutical industries, etc
• Optional finishing coat for systems made with Mapefloor CPU+/RT, Mapefloor CPU+/HD, Mapefloor CPU+/NZ, Mapefloor CPU+/UD, Mapefloor CPU+/SR.

COLOURS
Mapefloor CPU+/TC must be mixed with the specific Mapecolor CPU+ pigment available in grey, beige, red, green, ochre, blue and orange colour. Please, always refer to the our technical team for a detailed assessment of the most suitable system and colour for the specific case. The colour also helps to define the overall performance of the system.

Application

Substrate characteristics
Mapefloor CPU+/TC can be applied as an optional coat, to homogenize the colour appearance of Mapefloor CPU+ product range application. Application must take place within 12 hours of hardening at +23°C of the base layer if you want to maintain the resistance to thermal shock with no risk of debonding of Mapefloor CPU+/TC. After that time, it will be mandatory to mechanically reactivate the surface to be treated with a grinding machine before applying Mapefloor CPU+/TC. Substrates made up with Mapefloor CPU+ product range must be hardened, no longer sticky, dry, clean and dust-free.

Mapefloor CPU+/TC can also be used as a coating on concrete and cementitious surfaces in general such as walls, pillars, channels, etc. These surfaces must be dry or moderately humid, clean, undamaged, without crumbling or detached parts. The substrate concrete must be at least 15 days old and at the time of application it must have a minimum compressive strength of 25 N/mm² and 1.5 N/mm² tensile strength. The mechanical performance of the substrate must in any case be adequate for the purpose and for the stresses for the specific operating conditions.

Substrate preparation
Mechanically remove any loose or crumbly parts. Cracks can be repaired with Mapei Primer SN filled with quartz sand or thixotropic agent like Mapei Additix PE or with Mapefloor JA or Mapefloor JA Fast depending on the width and depth of the defects and cracks. For the reconstruction of heavily degraded areas and joints, the filling of large depressions, repairs, or minimal localized changes to slopes, etc., please contact our technical team. Before proceeding with the application of the material, the surface dust must be carefully vacuumed.

Temperature
To avoid the condensation on the surface, the substrate temperature must be at least 3°C above the dew point. The relative humidity of the air must be lower than 80%. The ambient temperature must be between +10°C and +30°C.

In case of application at temperature above +25°C, store the material in sheltered spot at lower temperature. This will allow to get longer pot life and get the application simpler even at high temperature. In case of temperature below +15°C, store the material in a warmer place (heated room temperature) to avoid the risk of too high viscosity of the mix making the application harder and turning into a potential problem of aesthetics effect.

Preparation of the product
Shake the packs containing the liquid components A, B and Mapecolor CPU+ pigment. Pour one pack of component A and one pack of Mapecolor CPU+ into a clean bucket and mix for a few seconds until a homogeneous mixture is obtained. Then add one pack of component B and mix again with a suitable low-speed electric mixer until completely blended. Then slowly and gradually add one pack of component C, continuing to mix for at least three minutes until a homogeneous mixture is obtained. At temperatures lower than +23°C this time could be slightly longer. Only mix whole packs of components A, B, C and Mapecolor CPU+ to prevent potential mistakes in the mixing ratios which could compromise the entire system. Please read the technical data sheets of the related Mapefloor CPU+ product for further application details.

Application of the product
Mapefloor CPU+/TC can be applied on substrates made with Mapefloor CPU+ products range within 12 hours of their hardening at +23°C. If this time is exceeded, mechanical preparation of the surface must be carried out. There is no maximum overcoating time for Mapefloor System CPU+/DP, as long the surface is clean and free from dust.

For better distribution of the material, it is advisable to pour all Mapefloor CPU+/TC onto the floor and apply it evenly with a short or medium pile roller, for example on smooth Mapefloor CPU+/MF or on rough Mapefloor CPU+/RT, Mapefloor CPU+/HD, Mapefloor CPU+/NZ, Mapefloor CPU+/UD and Mapefloor CPU+/SR. In the case of wall cladding or coving, apply the product in at least two coats. In the Mapefloor System CPU+/DP system, immediately after mixing, pour all Mapefloor CPU+/TC on the floor. Then spread the material evenly with a straight squeegee, crossing the strokes to seal the roughness properly.

Finally, use a medium hair roller (50-60 cm wide), to even out any excess product and obtain the correct aesthetic and functional result. Apply the mix within the useful pot life indicated in the table. The higher temperatures the lower pot life; the lower the temperature, the higher pot life.