FOX PURMAX® POLYUREA TOPCOAT is a polyaspartic-based, two-component, aliphatic, high chemical resistance, low-viscosity, flexible, solvent-free and glossy topcoat. Thanks to its fast drying time, it offers an ideal solution for applications where downtime must be minimised.

Colour Palette

RAL Colour Range

Packaging

5 kg
TDS

Product Description

FOX PURMAX® POLYUREA TOPCOAT is a polyaspartic-based, two-component, aliphatic, high chemical resistance, low-viscosity, flexible, solvent-free and glossy topcoat. It is applied as a topcoat over FOX PURMAX® series polyurethane waterproofing systems and FOX PURMAX® Spraytec series waterproofing systems. It provides 4 times higher chemical and mechanical resistance compared to epoxy. Thanks to its ability to open to pedestrian traffic after approximately 2 hours, downtime is minimised.

Advantages

  • High chemical and mechanical resistance (4 times compared to epoxy).
  • Fast setting (can be opened to pedestrian traffic after approximately 2 hours).
  • Aliphatic coating.
  • Flexible.
  • Easy to maintain and clean.
  • Provides hygienic environments.
  • Glossy topcoat finish.
  • High adhesion strength.
PropertyValue
Density1,43 gr/cm³
ColourRAL Colours
Adhesion Strength – Concrete>3,85 N/mm²
Adhesion Strength – Steel>1,92 N/mm²
ThinningNot thinnable
Substrate Temperature+10°C / +25°C
Pot Life25 minutes
Time to Pedestrian Traffic2 hours
Full Cure Time7 days
Shelf Life6 months (from date of manufacture)
Storage Temperature+5°C / +30°C

Usage Areas

  • As a topcoat over Fox Purmax® series polyurethane waterproofing systems and Fox Purmax® Spraytec series waterproofing systems
  • Terraces exposed to UV and solar radiation
  • Terraces, balconies and all wet areas
  • Roof and garden terraces
  • Swimming pools and ornamental ponds
  • Aircraft hangars
  • Car park coatings
  • Water supply lines and channels
  • Underground water tanks
  • Tunnels
  • Canals
  • Warehouses
  • Collection tanks
  • Prefabricated structures
  • Steel structures
  • Wide-span terraces
  • Roof gutters
  • Planter waterproofing

Application Steps

  1. 1

    Surface Preparation

    The surface to be coated must be free of dust, dirt, oil and any other substances that could impair adhesion. Concrete surfaces must be at least 3 weeks old, surface temperature must be a minimum of +10°C, and moisture content must be below 4%. Application must be carried out within the recoating window of the coating system. If applying over existing coatings, consult Technical Services.

  2. 2

    Checking Application Conditions

    Surface, ambient and material temperature must be between a minimum of +10°C and a maximum of +25°C. Relative humidity must be a maximum of 60%. Substrate temperature must be at least +3°C above the dew point. Rising damp must be checked using the ASTM polyethylene sheet test.

  3. 3

    Mixing

    Before mixing, ensure that product temperatures are between +10°C and +25°C. Thoroughly mix component A on its own using an electric mixer (300–400 rpm) and a suitable epoxy/polyurethane resin mixing tip. After adding component B entirely into component A, mix continuously for at least 3 minutes until a homogeneous mixture is obtained. Avoid over-mixing to minimise air entrainment.

  4. 4

    Application

    FOX PURMAX® POLYUREA TOPCOAT is poured onto the surface in equal amounts and at equal intervals, then applied using a roller or airless spray machine. Pot life is 25 minutes at +23°C; application must be completed within this time.

  5. 5

    Tool and Equipment Cleaning

    After application, tools and equipment must be cleaned with solvent or polyurethane thinner. Once FOX PURMAX® POLYUREA TOPCOAT has cured, it can only be removed from surfaces by mechanical means.

  6. 6

    Curing and Protection

    After application is complete, the coating must be protected from direct water contact for at least 24 hours. Pedestrian traffic is possible after approximately 2 hours; full cure is achieved after 7 days. Ambient and substrate temperatures must not fall below the specified minimum levels.

Critical

Concrete surfaces to be coated must be at least 3 weeks old prior to application.

Critical

Surface temperature must be minimum +10°C, maximum +25°C; ambient temperature minimum +10°C, maximum +25°C; material temperature minimum +10°C, maximum +25°C.

Critical

Surface moisture content must be below 4%. There must be no rising damp according to ASTM (polyethylene sheet test).

Critical

Relative humidity must be a maximum of 60%.

Critical

The substrate temperature must be at least +3°C above the dew point. If condensation has formed on the coating, it must be dried with a dry mop.

Critical

After application is complete, the coating must be protected from direct water contact for at least 24 hours. In case of water contact, softening and blistering may occur on the coating; in this case the coating must be completely removed and reapplied.

Critical

Mixing must be carried out with an electric mixer at 300–400 rpm and an epoxy/polyurethane resin mixing tip. Failure to use the specified mixing tip will result in air bubbles forming on the coating.

Important

Pot life is 25 minutes at +23°C. Higher temperatures shorten the pot life; lower temperatures extend it.

Important

Materials should be brought to the application site 1–2 days in advance and allowed to acclimatise to ambient conditions.

Important

In cold weather, containers should be conditioned at +20°C – +25°C before use.

Important

Rain, dust, wind, animals and insects must be prevented from entering the area while the coating is still fresh.

Important

A vapour barrier layer must be installed on floors resting on soil.

Important

Store in original unopened packaging in a cool and dry environment between +5°C and +30°C, protected from frost. Shelf life is 6 months from the date of manufacture.

Critical

It is dangerous to approach storage and application areas with open flames; these areas must be ventilated.

Critical

Work clothing, protective gloves, goggles and a mask must be worn during application. Avoid contact with skin and eyes; in case of contact, wash thoroughly with plenty of water and soap. If swallowed, seek medical attention immediately.