Nitoproof 410: Fast Drying Cementitious Waterproofing Membrane

Product Overview

Nitoproof 410 is a water-based, fast-drying, flexible two-component polymer-modified cementitious waterproofing membrane manufactured by Fosroc. It is specifically designed for a wide range of waterproofing applications in both internal and external environments, offering excellent performance characteristics for moisture-exposed areas.

Key Features and Advantages

Drying Performance

Nitoproof 410 demonstrates fast drying capabilities that enable efficient project workflows:

• Recoat time: 2 to 4 hours at 23°C and 50% relative humidity
• Dry film time: 5 to 7 hours at 23°C and 50% relative humidity
• Immersion time: 7 days at 23°C and 50% relative humidity
• Flood testing time: 36 hours at 23°C and 50% relative humidity

Physical and Mechanical Properties

The cured membrane exhibits robust performance specifications:

Property	Specification
Elongation	93% (AS1145.3) - Class II
Tensile Strength	1.24 MPa (AS1145.3)
Bond Strength	23.93 N (AS4654.1)
Shore A Hardness	65
Colour	Grey
Tensile Strength	1.24 MPa
Cyclic Movement	Class II (AS/NZS 4858)
Durability	Class II (AS/NZS 4858)

Wet Form Characteristics

In its uncured state, Nitoproof 410 presents the following properties:

• Specific Gravity: 1.3 kg/litre
• VOC Content: 9 g/litre
• Appearance - Liquid Component: White liquid
• Appearance - Powder Component: Grey powder
• Mixed Appearance: Grey slurry
• Mixing Ratio: 1:1 by weight (1L Part A liquid to 0.8L Part B dry powder)

Moisture and Environmental Properties

• Moisture Transmission Rate: 3.80 g/m²/24hrs (ASTM E 96)
• Water Absorption: Maximum 1.88% mass (AS3558.1)
• Low VOC: Solvent-free and non-hazardous formulation

Application Uses

Nitoproof 410 is suitable for a comprehensive range of waterproofing applications:

• Podiums, terraces, balconies, and deck areas – under toppings, tiles, and other protected environments
• Wet areas and showers – classified as a Class II Membrane System
• Foot-trafficable exposed roof top membranes – when overcoated with Nitoproof Top Coat UV
• Exposed balcony decks and walkways subject to regular foot traffic
• Water tanks and water storage areas (requiring sand/cement slurry priming with Nitobond SBR for submerged applications)
• Tiled pools and water features (requiring Nitobond SBR slurry priming for immersed conditions)
• Foundation waterproofing in subterranean areas, retaining walls, and planter boxes

Design Criteria and Application Specifications

Application Methods

Nitoproof 410 is designed for application using:

• Thick brush
• Roller
• Airless spray equipment

Coverage and Film Thickness Requirements

General Non-Immersed Applications:

• Approximate total coverage: 1.6 L/m²
• Wet Film Thickness (WFT): 1.6 mm
• Dry Film Thickness (DFT): 1.3 mm
• Applied as two (2) coats with minimum total coverage of 1.6 litres/m²

Immersed/Below-Ground Applications:

• Approximate total coverage: 2.0 L/m²
• Wet Film Thickness (WFT): 2.0 mm
• Dry Film Thickness (DFT): 1.7 mm
• Applied as three (3) coats with minimum total coverage of 2.0 litres/m²

Successive Coat Application

Each successive coat should be applied at 90 degrees to the previous coat, with an allowable drying time of 1-3 hours between coats.

Supply and Packaging

Nitoproof 410 is supplied in 25 kg (19.2 litre) two-component packs:

Component	Volume/Weight	Product Code
Part A (Liquid)	12.5 L	FC000603-12.5L
Part B (Powder)	12.5 kg	FC000604-12.5KG

Coverage/Yield:

• Each 25 kg kit yields approximately 19.2 litres of mixed product
• General applications: approximately 12 m²/19.2 litres
• Immersed applications: approximately 9.6 m²/19.2 litres

Mixing Requirements

Proper mixing is critical for optimal performance:

• Mix in equal parts by weight (1L Part A liquid to 0.8L Part B dry powder)
• Add approximately half of the powder while mixing and wet out well
• Add remaining powder and wet out thoroughly
• Scrape the sides of the pail and mixing paddle
• Mix at higher speed for 3 minutes while avoiding aeration
• Allow mixed material to stand for 3 minutes, then lightly re-mix
• The product is then ready to apply

Substrate Preparation

Surfaces must be:

• Clean, sound, and stable
• Free of loose foreign material, existing coatings, laitance, release agents, curing compounds, and oil/grease residues
• Moisture content not exceeding 5% when tested using a Tramex CMEX5 moisture meter for concrete and masonry substrates
• Rendered surfaces must cure for at least 16 hours in normal ambient conditions before waterproofing commences

Priming Requirements

Substrates must be primed prior to Nitoproof 410 application:

• Porous masonry surfaces: Nitoprime 120 at approximately 7 m²/L, or Nitoproof 510 (more robust option) at 5 m²/L
• Non-porous substrates (CFC, wet area timber, ceramic tile, metals, plastics): Nitoprime 115 at approximately 12 m²/L
• Submerged applications: Slurry primer made of sand, cement, and Nitobond SBR

Standards Compliance

Nitoproof 410 has been independently tested and meets rigorous construction standards:

• AS/NZS 4858:2004 – Wet Area Membrane as a Class II membrane
• AS 3740:2021 – Waterproofing of Wet Areas Within Residential Buildings
• AS/NZS 4654.1:2012 – Waterproofing membranes for external above-ground use (Part 1: Materials)
• AS 4586-2013 – Slip resistance (when overcoated with Nitoproof Top Coat UV and Nitoproof Top Coat EW)

Shelf Life and Storage

• Part A shelf life: 24 months from date of manufacture if kept in original, unopened packaging
• Part B shelf life: 36 months from date of manufacture if kept in original, unopened packaging
• Do not use if lumps are present in the product

Cleaning

• Wet state: Can be cleaned from tools and equipment using water
• Hardened material: Requires mechanical removal

Application Temperature Limitations

• Do not apply in temperatures above 35°C or below 5°C
• Surface temperature must be monitored rather than ambient temperature, as it determines application suitability

Post-Application Requirements

• Curing: Must cure for a minimum of 24 hours at 25°C before placing protection
• Tiling commencement: Approximately 24 hours after final coat under normal ambient conditions (23°C @ 50% RH), with an additional 24 hours drying time at 10°C
• UV stability: Not UV stable; must be cured before protection is applied

Compatibility and System Integration

Nitoproof 410 is compatible with:

• Polymer-modified cement-based tile adhesives – for direct adhesion to the membrane
• Nitobond SBR – recommended within screeds and renders directly over the membrane as a waterproof and adhesion enhancer
• Nitoproof Top Coat UV – for creating foot-trafficable, UV-stable exposed roof membranes
• Nitoband System and Nitoband SA – bond-breaking systems for substrate junctions and critical movement zones

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References

• [1] Fosroc_Nitoproof_410_TDS.pdf
• [2] Fosroc_Nitoproof_410_NZ_TDS.pdf
• [4] Fosroc_Nitoband_TDS.pdf
• [5] Fosroc_Nitoband_SA_TDS.pdf
• [6] Fosroc_Nitoproof_Top_Coat_UV_TDS.pdf