Nitoproof 210: Bituminous Waterproofing Membrane

Product Overview

Nitoproof 210 is a single-component water-based bituminous rubberised waterproofing membrane developed specifically for residential and commercial construction applications. It forms a highly flexible, conformable, and seamless waterproofing membrane that provides durable protection against moisture penetration.

Key Features and Advantages

Nitoproof 210 offers several distinctive characteristics that make it suitable for demanding waterproofing applications:

• Self-priming capability on most common substrates, reducing preparation requirements
• Excellent cold flexibility and elongation properties for movement accommodation
• Root penetration inhibitor integrated into the formulation for underground applications
• Low VOC (Volatile Organic Compound) content, contributing to environmental and health safety
• Fast drying formulation enabling efficient project scheduling
• Excellent resistance to ponding water, preventing degradation from standing water
• Non-toxic and non-flammable composition
• Highly flexible and conformable nature ensures seamless membrane formation

Technical Specifications

Composition and Properties

Nitoproof 210 is formulated with specific technical characteristics:

Property	Value
Solids Content	60%
Colour	Black
VOC Content	<15g / litre
Tensile Strength	1.47 MPa
Hardness	50 - 55 Shore A
Elongation at Break	>300%

Application and Coverage

Design Criteria:

• Applied in two coats at 750 microns per coat each
• Achieves total membrane thickness of 1.5mm wet film thickness
• Results in minimum dry film thickness of 1.0 to 1.3mm

Coverage Rate:

• 1.5 to 2.0 litres/m² for complete 2-coat application
• Each 15-litre pail covers approximately 10m² when applied at minimum 750 microns per coat
• Minimum wet film thickness per coat: 0.75mm (750 microns)

Drying Times

Drying times vary depending on ambient temperature conditions:

Condition	At 23°C, 50% RH	At 10°C, 50% RH
Recoat Time	4 hours	8 hours
Dry Film	24 hours	48 hours
Backfilling	3 days	4 days

Application Methods

Nitoproof 210 can be applied using multiple techniques:

• Roller application (12mm nap recommended)
• Brush application
• Standard airless sprayer (piston pump unit with 21 to 25 thou tip size) - product must be thoroughly mixed before spraying

The smooth texture and non-sag formulation makes it suitable for both vertical and horizontal application.

Substrate Preparation and Priming

Surface Requirements

Surfaces must be clean, sound, stable, and free of:

• Loose foreign material
• Existing coatings
• Laitance
• Release agents
• Curing compounds
• Oil and grease residues

Substrate Moisture

• New concrete must cure for 28 days before application
• New render finishes must cure for 7 days before application
• Application may proceed earlier if moisture content has been verified as <5% (measured with Tramex CMEX5 Moisture Meter)

Priming Requirements

Self-priming capability: Nitoproof 210 is self-priming on most porous surfaces. Dilute Nitoproof 210 at 1:1 ratio by volume with water, stir until homogeneous, and apply using brush or roller.

Coverage for primer: 0.4 to 0.8L/m² depending on substrate porosity and condition.

For non-porous substrates (metals and plastics): Nitoprime 115 may be selected as an alternative primer.

Crack and Joint Treatment

Cracks larger than 2mm or structural shrinkage cracks must be:

1. Filled with flexible polyurethane sealant such as Nitoseal PU250 or Nitoseal PU400
2. Covered with 50mm wide polyethylene tape before Nitoproof 210 application
3. Alternatively, covered with the Nitoband Tape System

Nitoband System Integration

When used in tanking and waterproofing applications, Nitoproof 210 requires a suitable bond breaker at all substrate junctions. The Nitoband System includes:

• Tape for change of direction (wall/wall and wall/floor joints)
• 270° external corners (135mm x 135mm)
• 90° internal corners (135mm x 135mm)
• Adjustable internal corner (135mm x 135mm)
• Three size variations of pipe penetration detailing squares (suitable for 6mm to 150mm pipe diameters)

Application method: Apply Nitoproof 210 across substrate joins extending approximately 70mm either side of the join. While the membrane is still in wet state, install Nitoband components ensuring all air voids are expelled.

Membrane Application Process

Coating Application

• Laid onto surface continually in one direction
• Maintain wet film thickness throughout application
• Each successive coat applied at 90 degrees to the previous coat
• Allows 4 hours between coats for film to dry at 23°C
• Shorter times may be acceptable in good drying conditions

Inspection and Quality Control

Conduct final inspection on membrane surface prior to backfilling to ensure no pinholes exist. An additional coat may be required if imperfections or pinholes are present.

Protective Requirements

Protection from mechanical damage is essential in certain applications:

• Basement applications: Protect with Proofex Protection Board PP or Proofex Sheetdrain 81 drainage and protection sheet
• This prevents damage during backfilling and construction activities

Specialized Applications

Key Joints and Dowel Bars

Nitoproof 210 is suitable as a coating on key joints and dowel bars. When allowed to dry prior to pouring the next concrete section, it forms an effective slip layer permitting relative movement between sections.

Ponding Water Resistance

Nitoproof 210 demonstrates excellent resistance to ponding water, enabling effective protection in applications subject to prolonged water pooling without degradation.

Supply Configuration

Product Code: FC000605-15L

Nitoproof 210 is supplied in 15-litre pails.

Storage and Shelf Life

• Store in original, unopened containers in dry conditions
• Temperature range: 5°C to 30°C
• Do not use if lumps are present or if product has bacterial smell
• Storage in high temperature and high humidity locations may reduce shelf life

Cleaning and Maintenance

Wet State Cleaning

• Splashes on paintwork should be wiped off immediately with water and strong detergent solution
• Brushes and brooms should be soaked in strong detergent solution immediately after application

Dried Material Removal

Where Nitoproof 210 has dried on equipment or surfaces, it may be removed using:

• Fosroc Solvent 10
• Mechanical means

Limitations

Nitoproof 210 has specific application constraints:

• Not recommended for continuous water immersion or internal walls subject to back pressure
• Not designed as an exposed wearing course membrane
• Must be covered and cannot be exposed to UV on a permanent basis
• Not designed to be finished directly over with tiles, screeds, renders, or paints

Important Application Note

Application of all liquid-applied membranes should always refer to surface temperature conditions before commencing application, not just ambient temperatures. Substrate temperature may differ significantly from ambient temperature (e.g., ambient 10°C but substrate 0°C with frost issues; or ambient 26°C but substrate 36°C).

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References

• [1] Fosroc_Nitoproof_410_TDS.pdf
• [2] Fosroc_Nitoproof_210_TDS.pdf