KingProof PUB50®
One component, polyurethane-bitumen liquid membrane for waterproofing and protection.
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
- Tensile strength ASTM D412
- > 1.2 MPa
- Adhesion to concrete ASTM D4541
- ≥ 1.0 MPa
- Elongation at break ASTM D412
- ≥ 200%
- Shore A Hardness ASTM D2240
- 40 ± 5 @ 7 days
Overview
KingProof PUB50 is a, one component, thixotropic, bitumen-extended polyurethane fluid based on pure elastomeric hydrophobic polyurethane resin and is extended with chemically polymerised virgin bitumen.
It produces a hydrophobic, elastic membrane with very strong adhesion to most types of substrate, as well as bituminous, and excellent mechanical and chemical resistance properties
Where to use
Waterproofing and protection of
- Foundations.
- Wet areas (Bathrooms, kitchens, etc.).
- Shaded roofs (i.e. unexposed to UV).
- Vertical and horizontal substrates.
- Cementitious substrates.
- Irrigation channels.
- Gypsum and cement boards.
- Asphalt membranes (for repair also).
Why use it
- Fast curing.
- Easily applied by brush, squeegee blade or airless spray.
- Excellent adhesion to almost any surface.
- Excellent thermal resistance and service temperatures.
- Thixotropic consistency, easily applied on vertical surfaces and complex shapes without running or bubbling.
- Excellent chemical resistance.
- Provides a uniform, joint free, seamless membrane.
- Can be easily repaired if damaged.
Technical properties
Values @ 23°C & 55% RH
| Colour | Black |
|---|---|
| Specific gravity | 1.20 ± 0.05 |
| Tack free time | 8 – 10 hr |
| Skin over time | 6 – 7 hr |
| Recoatable time | 12 - 24 hr |
| Final curing time | 7 days |
| Shore A HardnessASTM D2240 | 40 ± 5 @ 7 days |
| Tensile strengthASTM D412 | > 1.2 MPa |
| Elongation at breakASTM D412 | ≥ 200% |
| Adhesion to concreteASTM D4541 | ≥ 1.0 MPa |
| Service temperature | -40 to 80°C |
curing membranes must be removed.
Fill surfaces irregularities with a suitable product. Maximum moisture content should not exceed 5%. New concrete structures need to dry for at least 28 days.
Important: Do not wash surface with water.
How to use
Surface preparation
The surface should be clean, dry, sound and free from oil, grease and wax contamination. Cement laitance, loose particles, mould release agent or
Priming
Although the material has excellent adhesion on most common construction substrates, it is recommended to prime all kinds of substrates using KingProof Primer PW.
The primer is designed to significantly improve the adhesion between KingProof PUB50 and all kind of non-porous substrates such as steel, glassy tiles and aluminum. It will also stabilize and fortify weak
and porous substrates prior to the application of KingProof PUB50.
KingProof Primer PW should be applied using a brush or roller at a rate of 0.16 liters/m2 to achieve around 70 - 75 micron DFT.
Leave the primer to cure for 24 hours before the application of KingProof PUB50.
Application
For spraying with airless spray machine, KingProof PUB50 can be diluted by 5 - 10% using KINGKRETE Solvent PU (consult KINGKRETE's technical department for further details). For any mixing done on site, low speed (300 rpm) mixer or electric drill should be used. Apply the material with roller or brush. Apply at least two coats. Do not leave more than 24 hours between coats.
Cleaning
All tools should be cleaned after finishing with paper towels and then wipe by using KingKrete Solvent PU. Do not try to clean rollers.
Limitations and notes
Limitations
- KingProof PUB50 should not be applied over unsound substrates.
- KingProof PUB50 is not recommended for areas exposed to UV rays.
Notes
It is always recommended to test the adhesion between the substrates and KingProof PUB50 on small area onsite prior to proceeding the works in order to ensure that the substrate is well prepared and compatible with the product.
Coverage, packaging and storage
Consumption
- First coat: 0.7 - 0.9 kg/m².
- Second coat: 0.7 - 0.9 kg/m².
- Total consumption: 1.4 - 1.8 kg/m² to give 1.0 - 1.3 mm dry film thickness.
Packaging
KingProof PUB50 is available in 25 kg packs.
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.