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Fosroc Nitoproof 600


  • Model: Nitoproof 600
  • Shipping Weight: 25Kgs

Liquid applied, elastomeric, one coat waterproofing membrane.
Nitoproof 600 single component pitch modified polyurethane cures by reaction with atmospheric moisture to give a tough elastomeric waterproof membrane. It is supplied in a single grade to meet all site application methods and requirements. Nitoproof 600 is a medium viscosity grade (approximately 600 poise) for roller, squeegee or spray application to horizontal and vertical surfaces.

To provide a continuous, seamless, waterproof membrane for concrete. Typical applications will include foundations and floor slabs, suspended floors, balconies, patios, bathrooms, inspection pits, inverted roofs, planter boxes and tunnels.

  • One component; ready to apply direct from the can.
  • Liquid application means details are simplified and there are no joints in the membrane.
  • Highly elastic, cures to give a permanently fl exible resilient barrier over a wide range of temperatures.
  • Rapid installation; signifi cantly reduces time spent on preparatory works and detailing
  • Excellent adhesion, can be applied to a wide range of substrates. Continuous adhesion prevents lateral migration of water.
  • Impervious - outstanding barrier properties ensure protection against corrosive soil conditions.
  • Thermally stable - irreversible chemical cure eliminates melting and fl ow at high temperature.
  • Excellent resistance to oxidation and embrittlement.
  • Mechanical damage to the membrane can be easily repaired by spot application

Nitoproof 600 is a single component pitch modified liquid polyurethane. It cures by reaction with atmospheric moisture to form a tough elastomeric waterproof membrane. Nitoproof 600 is designed for use on horizontal and vertical surfaces.

Technical Support

Colour : Black
Application temperature range : 5 to 50°C
Service temperature range : -40 to +70°C
Tack free time at 25°C : 15 to 24 hrs
Specific gravity 12 : 1.15 to 1.17
Viscosity : 200p
Solids content (%) : 92
Typical results from membrane cured for 28 days

Elongation (%):(ASTM D412-90) : 500 - 700
Tensile Strength (N/mm2):(ASTM D412-90) : 1.60
Recovery from 200% elongation (%):(ASTM D412-90) : 95
Tear resistance (N):(ASTM D624-73) : 10
Water vapour transmission: 1.3 mm film (g/m2/d) : 9.5
Initial hardness (Shore A): (ASTM 2240 - 86) : 26
Chemical resistance : Unaffected by mild acids, alkalis and water borne salts. Does not biodegrade.

Specification clauses

Supplier Specification
Liquid applied elastomeric, pitch-modified polyurethane waterproof membrane where shown on the drawings shall be Nitoproof 600 obtained from Fosroc. It shall be used in accordance with the manufacturer's current application instructions.

Performance Specification
Liquid applied, elastomeric waterproofing membrane where shown on the drawings shall be made of a pitch modified polyurethane. The membrane when cured shall be capable of an extension of not less than 500%. Its tensile strength shall exceed 1.50 N/mm2 and the water vapour transmissions shall be less than 10g/m2/24 hr. It shall be used in accordance with the methods given in the manufacturer's data sheet.

Application Instructions


All surfaces to be waterproofed should be clean, sound and dry. Priming of good quality, dense concrete is not necessary. For absorbent surfaces such as porous concrete a mixture of 1 part Nitoproof 600 and 1 part xylene is used to seal the surface. Bitumen and asphalt surfaces require priming with Nitoproof 600 Primer as a barrier to protect the membrane.
Nitoproof 600 Primer can be applied by brush or roller and allow to cure for 4-8 hours after application. Do not allow primer to harden completely before proceeding with Nitoproof 600 application.
All movement joints should be masked and then overcoated with Nitoproof 600 extending 150 mm each side of the tape.
Fosroc offers a comprehensive range of high performance high quality, construction products. In addition to a wide range of quality products, Fosroc offers a technical support package to specifiers and contractors which includes assistance with product selection and technical advice from staff with unrivalled experience in the industry.

Application methods

Nitoproof 600 standard can be applied by brush, squeegee, roller or airless spray. Full details of suitable spraying equipment can be supplied on request. It is applied at a minimum wet film thickness of 1.3 mm

Where required, Nitoproof 600 may be reinforced using suitable fabric reinforcement. This should be applied to a 1.3 mm application of Nitoproof 600 whilst it is still wet and be overcoated with another 1.3 mm thick application 24 hours later.
The newly applied membrane must be allowed to cure for a minimum of 24 hours at 25°C. Tools and equipment should be cleaned with Fosroc Solvent 101 immediately after use.

Nitoproof 600 should not be left exposed to UV light for more than 28 days.


Pack sizes:
Nitoproof 600: 19 litre pails

Nitoproof 600: 1.3 litre/m2 for 1.3 mm wet film thickness

Minimum 6 months in original unopened containers.


Health and Safety
Some people are sensitive to resin systems. Impervious gloves and barrier cream should be used when handling these products. Eye protection should be worn. If accidental eye contamination occurs, wash thoroughly with plenty of water and seek medical advice. If contact with skin occurs, it must be removed before curing takes place. Wash off with an industrial skin cleaner followed by plenty of soap and water. 
Do not use solvent. Ensure adequate ventilation when using these products.

All liquid products described on this data sheet contain flammable solvents. Do not use near open flames or smoke during use.
Flash point : 54°C

This product was added to our catalog on Thursday 25 June, 2015.

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