KingProof B20®
General purpose fiber reinforced rubberized bitumen emulsion
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
- Tensile strength ASTM D412, Die C
- 0.2 MPa
- Density
- 1 ± 0.02 gm/ cm³
- Solid content
- > 52%
Overview
KingProof B20 is a dark brown emulsified bitumen liquid reinforced with rubber, formulated from selected raw materials to form a high build elastomeric water proof and protective coating for concrete and masonry.
Where to use
KingProof B20 provides a water proofing and protective coating for:
- Retaining Walls.
- Shaded or tiled roofs.
- Underground concrete foundations.
- Wet floor areas such as bathrooms and
kitchens.
- Where minor live crakes may occur in
concrete substrates, KingProof B20 will bridge
such minor cracks.
- Basement walls.
- Concrete slabs.
Why use it
- Elastomeric will bridge minor cracks which
may occur in concrete substrates.
- Resists attack by chloride and sulphate ions
present in ground water.
- Single component.
- Easily applied by brush, roller, broom or
squeegee.
- Economical.
- Solvent free, non flammable.
- Asbestos free.
- Rot resistant.
Technical properties
Values @ 25°C
| Form | Thixotropic liquid |
|---|---|
| Density | 1 ± 0.02 gm/ cm³ |
| Solid content | > 52% |
| Over coating time | 3 hr @ 25°C 2 hr @ 35°C |
| Application temperature | 5 - 45°C |
| Drying time (for thickness < 0.4 mm) | 2 - 3 hr @ 25°C 1 - 2 hr @ 35°C |
| Service temperature | -20 to 60°C |
| Chemical resistance | Resists to all water based salts, mild alkaline and acid solutions, detergents and most common aqueous minerals |
| Tensile strengthASTM D412, Die C | 0.2 MPa |
| VOC | < 40 gr/ ltr |
Note: Drying time is affected by applied thickness, temperature of substrate and wind conditions.
Primer Coat
There is generally no need for primer coat. Dusty surfaces should be primed with a coat of KingProof B20, diluted with an equal quantity of cool, clean water and allowed to dry.
Standards and approvals
- KingProof B20 complies with ASTM D1227
Type II, Class 1.
- KingProof B20 complies with ASTM C309 as a curing compound when applied with two coats at a rate of 4 m²/litre per coat.
How to use
Surface preparation
Surface preparation is very important to get the highest performance of KingProof B20. Any surface to be coated must be clean, sound and free of oil or grease. Any oil or grease contamination should be removed with a chemical degreaser.
All holes should be filled with a suitable cementitious mortar before application of KingProof B20.
Application
It is recommended that two coats of KingProof B20 be applied. The second coat should be applied at a right angle to the first coat. Allow a minimum of 3 hours between coats. Stir well before use. KingProof B20 may be applied by brush, roller, broom or squeegee.
Cleaning
Tools and equipment can be cleaned with water when still wet. Dried KingProof B20 may be removed with KINGKRETE- Solvent.
Coverage, packaging and storage
Coverage
Coverage rate depends on surface roughness and the method of application.
- 3 - 5 m²/litre per coat, as protective coating.
- 1 - 1.5 m²/litre per coat, as waterproof coating giving a dry film thickness of 350 - 500 microns per coat. Two coats recommended.
Packaging
KingProof B20 is available in 18 and 200 litres drums.
Storage
Shelf life is 1 year when stored under cover, out of direct sunlight and protected from extremes of temperature.
Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult KingKrete's Technical Services Department.
Health and safety
As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs. Treat splashes to eyes and skin immediately. If accidentally ingested, seek medical attention. Reseal containers after use. Use in well ventilated areas and avoid inhalation.