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• Features & Benefits
• Preparation & Application
• Limitations

Features & Benefits

• Protective, abrasion-resistant finish for external waterproof systems made from Mapefloor PU 400, Mapefloor PU 400 LV and Mapefloor PU 410 membranes after broadcasting them in excess with quartz sand
• Coloured finish for bridges and walkways after applying specific, elastic polyurethane waterproofing membranes
• Thanks to its flexibility, extremely simple application procedure and high resistance to abrasion and UV rays, Mapefloor Finish 451 is recommended as a protective finish for Mapefloor PU 400, Mapefloor PU 400 LV and/or Mapefloor PU 410, used to make protective and watertight coatings for flat and sloping roofs accessible to pedestrians and vehicles use, including external surfaces
• Two-component, aliphatic, elastic polyaspartic finish with excellent resistance to wear, abrasion and ultra-violet rays. Surfaces treated with Mapefloor Finish 451 also have an attractive finish
• Mapefloor Finish 451 has the following characteristics:
  • Good level of elasticity
  • High resistance to wear and abrasion
  • Excellent resistance to ultra-violet rays
  • Excellent resistance to atmospheric agents
• Thanks to its high resistance to ultra-violet rays and atmospheric agents, Mapefloor Finish 451 is ideal for use on external surfaces
• Applied on concrete supports, it complies with the principles defined in EN 1504-9 (“Products and systems for protecting and repairing concrete structures. definitions, requirements, quality control and conformity evaluation - General principles for the use and application of systems”) and with the requirements of EN 1504-2 (“Products and systems for the protection and repair of concrete”) for class: products for protecting surfaces – coating (C) – protection against ingress (PI) + moisture control (MC) + physical resistance/surface improvement (PR) + resistance to chemicals (RC) + increasing resistivity by limiting moisture content (IR).

Preparation & Application

Substrate Preparation

Apply Mapefloor Finish 451 on the surface of hardened resin broadcast in excess with sand, such as Mapefloor PU 400, Mapefloor PU 400 LV and Mapefloor PU 410, and after removing any excess sand from the surface. Substrates must be structurally sound with no detached areas and must also be clean, dry and free of all traces of dust, oil, grease and any other compound or substance that could affect adhesion.

Preparation of the Product

Mix the two components separately with a low speed electric mixer. Pour component B into the container of component A and mix for several minutes until completely blended.

Only prepare the quantity required within the maximum workability time (approximately 40 minutes at +23°C).

Application of the Product

Apply Mapefloor Finish 451 in a single coat by roller or by straight steel or rubber trowel. If the finish is applied by roller, it is recommended to apply the product in criss-cross strokes and to make sure it is applied uniformly to get an even, attractive finish. If the finish is applied by rubber trowel, consumption will be lower and the surface will be rougher.

Clean tools used to mix and apply the product with polyurethane thinners before it hardens. Once hardened the material may only be removed mechanically.

Consumption depends on the roughness of the substrate, the surrounding temperature and the type of tool used to apply the product. The figures indicated are for application on a substrate at a temperature of +15°C to +25°C. Lower temperatures increase the consumption rate and the hardening time of the product. Theoretical consumption: 0.6-0.8 kg/m² (it is recommended to carry out a preliminary test to estimate the actual consumption rate for the material).

Limitations

• The workability of the product is influenced by the surrounding temperature and the temperature of the substrate. Workability time varies according to the surrounding temperature and reduces as the temperature increases. We recommend, therefore, preparing only the quantity to be applied within the maximum workability time (approximately 40 minutes at +23°C)
• Do not dilute Mapefloor Finish 451 with solvent or water
• Do not apply Mapefloor Finish 451 on dusty or crumbling substrates
• Do not apply Mapefloor Finish 451 on substrates with oil, grease or stains in general
• Do not mix partial quantities of the components to avoid mixing errors; the product may not harden correctly
• Do not expose the mixed product to sources of heat
• The coating may change colour if it comes into contact with aggressive chemicals. A change in colour, however, does not mean that it has been damaged by the chemical
• Remove aggressive chemicals as soon as possible after they come into contact with Mapefloor Finish 451
• Use suitable specific cleaning equipment and detergent to clean the coating, depending on the type of dirt or stain to be removed
• Protect the product from water for at least 24 hours after application
• The product and resin system containing this product must not be applied on cementitious substrates with a moisture content higher than 4% or with capillary rising damp (check with a sheet of polythene)
• The temperature of the substrate must be at least 3°C above dew-point