Nurprime WB
Water Based Bitumen Coat
NURPRIME WB is a pure bitumen emulsion supplied as a viscous liquid for water proofing to substructure and super structure areas in buildings and civil engineering projects. The coating is dark brown in colour and dries to black flexible protective film.
Advantages of Nurprime WB
- Cold applied, no heating required
- Reduced chloride penetrations due to hard impermeable surface
- Multipurpose, serves both as a protective coating and curing membrane
- Environmentally friendly. Contains no Solvents, no health hazards
- Asbestos free, odorless. Can be applied in closed and confined spaces.
- Easy application due to paintable consistency, suitable for new and old concrete.
Typical Technical Data
| Color | Dark Brown/ Black Coating |
|---|---|
| Solid content | 32% ± 2 |
| Specific Gravity @ 25°C | 1. 02 ± 0.02 |
| Service Temperature | 5°C to 85° C |
| Application Temperature | 5°C to 65° C |
| Drying time @ 25°C | Touch Dry - 2 to 4 Hours per coat Hard Dry - 5 to 6 Hours Firm Dry - 24 Hours |
| Chemical Resistance | Water, aqueous groundwater, Salt solutions, mild detergents, Acids and Alkalis |
| Softening point | 50°C to 55°C |
Typical Application
General waterproofing and damp proofing of concrete, brick walls/foundations, asbestos cement sheets, roofing felts, woods etc. Protection of steelwork, pipes and metal.
The product NURPRIME WB complies to ASTM C309-11 and ASTM D1227, Type 2, Class 2.
Application
- Agitate the drum before use. The drum should be rolled on the ground back and forth before decanting material.
- Apply by brush or roller. Two or more coats must be applied to ensure a durable finish. Second and subsequent coats should be applied at right angles to each other once previous coat have fully cured, allow min 24 hours between first and second coat for better curing.
- NURPRIME WB can be applied to damp but not water clogged surfaces, dampen the brush before and occasionally during use, for smoother application.
Instructions For Use
Surface Preparation
The surface shall be cleaned thoroughly of all contaminants like dust, traces of curing compound,
oil and grease. Light mechanical grinding/grit blasting/high pressure water jet may be used to
clean the surface of all the contaminants depending on the degree of contamination on the
surface to be coated. All surface imperfections and protrusions shall be removed and repaired.
Structurally unsound and friable concrete must be removed and repaired
Priming
It is highly recommended to apply a priming coat prior to the application of the NURPRIME WB on
the substrate. The primer can be prepared in the site by diluting NURPRIME WB with 20% water
and applying this diluted coat as the primer.
The primer can be applied to damp or freshly cast concrete surfaces. For very dry and porous
substrates apply two coats of this primer. However, it should not be applied on waterlogged or
flowing water areas. Further coats shall be applied only after the primer coat dries off completely.
In case of delay in application of the top coat for more than 24 hours, a fresh coat of primer shall
be re-applied.
Coverage
Apply the coating at a coverage rate of 0.5-1 Lt/ m2, depending on the dry film thickness
required. 500 micron dry film thickness (DFT) can be achieved when applied at 0.94 Liter/m2/Coat.
Health & Safety
It is non-hazardous and non-flammable emulsion. Harmful if taken
internally avoids contact skin and eyes. In case of accidental contact with eyes, wash with copious amount of water and seek medical attention. Wear gloves and goggles.
Remarks
Empty cans should be disposed as per the rules and regulations of the country where
the material is used. And in NO case should empty cans be used for food stuffing.
Packing: 200 Liter Barrel, 20 Liter Pails
Toxicity: Toxic Material
Transportation: Non-Hazardous Material
