Nitoflor PU600 - Cementitious Polyurethane Floor Topping

Overview

Nitoflor PU600 is a high-performance, self-levelling polyurethane cement industrial floor topping engineered for demanding flooring applications in industrial and commercial environments. It serves as a robust basecoat within multi-component flooring systems, providing exceptional resistance to both mechanical stress and chemical attack.

Key Features and Advantages

Nitoflor PU600 offers numerous advantages for industrial flooring applications:

• Handles extreme temperatures with thermal resistance capabilities up to 100°C
• High chemical resistance to a wide spectrum of organic and inorganic acids, alkalis, amines, salts, and solvents
• Hard wearing and abrasion resistant, providing durability in high-traffic environments
• Low odour and non-tainting during application, improving workplace conditions
• Fast turnaround times, enabling rapid floor commissioning
• Anti-microbial properties that reduce bacterial and mould growth
• Very good slip resistance properties when aggregates are broadcast onto the surface
• HACCP certified for use in food handling areas (splash or spill zones)
• RCS (Respirable Crystalline Silica) Hazard Free, classified as safe under Australian Inventory of Industrial Chemicals

Technical Specifications

Physical Properties

The following properties were obtained under controlled laboratory conditions at 20°C and 50% relative humidity:

Property	Specification
Bond Strength	Greater than 25 MPa concrete cohesive strength; >1.5 MPa (EN1542)
Compressive Strength	>50 MPa (AS1478)
Flexural Strength	23.1 MPa (AS1012.11)
Hardness	80 Shore D (ASTM D2240)
Coefficient of Thermal Expansion	3.5 x 10⁻⁵ / °C (ASTM C351)
Water Absorption	0.8% @ 80°C (ASTM D570)
Impact Resistance	1.8 kg / 110 cm (ASTM D2794)
Density	1.735 g/cm³
VOC Content	25 g / litre (ASTM D3960)
Pot Life	Approximately 15 minutes at 25°C

Fire Resistance Standards

Nitoflor PU600 complies with AS/ISO 9239.1-2003 Reaction to Fire Tests for Floorings:

• Critical Heat Flux (CHF): ≥11.0 kW/m²
• Smoke Value: 28% minimum

Cure Times

Temperature	Light Traffic	Full Traffic	Full Chemical
10°C	36 hours	72 hours	12 days
20°C	24 hours	48 hours	7 days
30°C	12 hours	24 hours	5 days

Colour Variants and Light Reflectance Values (BS 8493:2008)

Nitoflor PU600 is available in multiple colour options:

• Pipeline Grey: 28.08% LRV
• Red Oxide: 7.94% LRV
• Sunflower: 32.97% LRV
• Bright Blue: 16.92% LRV
• Oatmeal: 46.41% LRV
• Jade: 12.89% LRV
• Curtain Call: 12.50% LRV

Chemical Resistance

Nitoflor PU600 provides good resistance to a wide spectrum of organic and inorganic acids, alkalis, amines, salts, and solvents. Specific resistance details including dilution percentages should be confirmed with Fosroc's local sales office.

Application Specifications

Temperature Resistance and Application Thickness

The product is designed for multiple application scenarios with varying thickness and temperature requirements:

Application Type	Total Thickness	PU600 Thickness	Service Temperature	Max. Cleaning Temp
Dry Process (Smooth Flooring)	3.5 mm	3 mm	-15°C to 65°C	80°C
Dry Process (Slip Resistance)	4-5 mm	3-4 mm	-15°C to 65°C	80°C
Chemical Storage/Loading & Unloading	5-6 mm	4-5 mm	-20°C to 90°C	90°C
Wet Process/Cold Rooms	8-9 mm	6 mm	-25°C to 100°C	100°C

Slip Resistance Ratings (AS4586)

When Nitoflor PU600 is combined with slip-resistant aggregates and Nitoflor PU200 topcoat:

• With Nitoflor Anti-Slip Grains 01: R11 slip rating
• With Nitoflor Anti-Slip Grains 21: R13 slip rating
• Without aggregates: D1 dry floor friction, P4 wet pendulum

Pack Sizes and Coverage

Available Kit Sizes

18.1kg Kit (10.5 litres mixed product):

• Contains pre-weighed components for optimal performance
• Nitoflor PU600/PU200 Part A Base: 2.6 kg
• Nitoflor PU600/PU200 Part B Hardener: 2.8 kg
• Nitoflor PU600 Part C Fillers: 12.4 kg
• Nitoflor PU Colour Pigment: 0.3 kg

72.4kg Kit (41.85 litres mixed product):

• Nitoflor PU600 Part A Base: 10.4 kg
• Nitoflor PU600 Part B Hardener: 11.2 kg
• Nitoflor PU600 Part C Fillers: 12.4 kg (x4)
• Nitoflor PU Colour Pigment: 1.2 kg

Theoretical Coverage

Pack Size	Thickness	Coverage	Consumption Rate
18.1 kg	3-4 mm	3.5 m²	5.2 kg/m²
18.1 kg	5-6 mm	2.1 m²	8.8 kg/m²
72.4 kg	3-4 mm	14 m²	5.2 kg/m²
72.4 kg	5-6 mm	8.4 m²	8.8 kg/m²

Anti-Slip Grains Application Rate:

• Nitoflor Anti-Slip Grains 01: 3 to 4 kg/m² for full blinded effect

System Design

Nitoflor PU Cement flooring is a complete system consisting of three components:

1. Nitoflor PU600 - The basecoat topping
2. Slip-resistant aggregate (optional) - Nitoflor Anti-Slip Grains 01 or 21
3. Nitoflor PU200 - The top coat sealer

The topping is designed to be applied at two different thicknesses, with depth determined by physical site parameters and temperature resistance requirements.

Storage and Shelf Life

Nitoflor PU600 components must be stored in cool, dry conditions in original, unopened packs at temperatures between 5°C and 30°C:

• Nitoflor PU600/PU200 Part B Hardener: 18 months shelf life from manufacture
• Nitoflor PU600 Part C Fillers: 24 months shelf life from manufacture

High temperature and humidity storage may reduce shelf life.

Application Requirements

Substrate Preparation

• Concrete substrate minimum strength: 25 MPa at 28 days
• Moisture content: Less than 95% relative humidity
• Surface must be clean, dry, dust-free, and open-textured
• Preparation by mechanical means (shot blasting or scarification) recommended
• All laitance must be removed to expose sound concrete
• Application temperature range: 10°C to 30°C

Installation Method

Nitoflor PU600 should only be applied by specialist contractors recognised and trained by Fosroc. The application process involves:

• Spreading using a steel trowel or gauging rake onto primed floor
• Immediate spike rolling to release entrapped air (within 8 minutes of application)
• Broadcasting slip-resistant aggregate (if required) to full cover
• Minimum 5-hour cure time at 25°C before topcoat application

Typical Applications

Nitoflor PU600 is typically used in:

• Wet processing zones in chemical processing plants
• Food preparation and manufacturing areas
• Cold rooms and wet processes
• Chemical storage and loading facilities
• Areas requiring high chemical resistance and mechanical durability
• Food handling areas (HACCP certified)

Limitations

• Not colour fast - may exhibit yellowing over time depending on UV and heat exposure
• Not suitable for deep freezing applications
• Not suitable for steam-only cleaning at 100°C (steam and hot water blend required)
• Components with identical batch numbers must be used in the same application area to ensure uniform colour
• Colour change is more noticeable in light colours and blues but does not compromise performance or chemical resistance

Compatibility Notes

Uniform colour requires using only components with identical batch numbers in single application areas.

References

• [1] Fosroc_Nitoflor_PU600_TDS.pdf
• [2] Fosroc_Nitoflor_PU200_TDS.pdf
• [4] Fosroc_Nitoflor_Anti-Slip_Grains_01_TDS.pdf
• [5] Fosroc_Nitoflor_Anti-Slip_Grains_21_TDS.pdf