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Rain leaks, cracking, aging... Featuring outstanding strength, the AQUA HAJIKUN waterproofing system enhances durability and water resistance to further extend the service life of buildings.
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AQUA HAJIKUN is a high-durability waterproofing material
that maintains buildings over a long time!
Quick-drying AQUA HAJIKUN hardens immediately after spraying, shortening the installation period. It creates a seamless waterproof layer through highly waterproof performance, and excels in durability and weather resistance. It is also highly flexible and adheres closely to substrates to maintain waterproof performance over the long term.
FEATURE 01
AQUA HAJIKUN hardens immediately after spraying, allowing installation to progress quickly. Its extremely short hardening time is able to significantly shorten the installation work period.
FEATURE 02
AQUA HAJIKUN is highly water resistant, forming a perfectly waterproof layer. By creating a continuous film with no seams or gaps, it minimizes the risk of water leaks.
FEATURE 03
The application of a top coat to AQUA HAJIKUN renders the surface highly durable and resistant to ultraviolet rays, chemicals, and wear, maintaining stable performance over a long period even in harsh environments. This reduces the frequency of maintenance and life cycle costs. AQUA HAJIKUN has undergone three repetitions of JASS8 (Construction Standard Specifications) durability testing (T501, T601), which normally demonstrates the equivalent of 10- to 15-year durability per test.
FEATURE 04
AQUA HAJIKUN is highly flexible, allowing it to follow movement and vibration in buildings. This reduces the risk of cracking and peeling and enables the accommodation of varied shapes and structures.s
FEATURE 05
Through use in conjunction with various primers, AQUA HAJIKUN exhibits outstanding adhesion to substrates including concrete, metal, and wood, and maintains high waterproof performance over a long period.
FEATURE 06
Sprayed installation of AQUA HAJIKUN forms a seamless waterproof layer, enabling application even over large surfaces and in areas with complex shapes. Its ability to accommodate varied substrates and shapes offer the ideal material and installation method for renovation projects.
Basic physical properties
General properties
| Name of base solution | AQ2000A | AQ2000B | AQ3000A | AQ3000B | AQ4000A | AQ4000B |
|---|---|---|---|---|---|---|
| Main components |
Hardening agent Special resin components |
Base resin socyanate components |
Hardening agent Special resin components |
Base resin Isocyanate components |
Hardening agent Special resin components |
Base resin Isocyanate components |
| External appearance | Brown clear liquid | Light yellow clear liquid | Brown clear liquid | Light yellow clear liquid | Brown clear liquid | Light yellow clear liquid |
| Viscosity (mPa·s/25°C) | 500-900 | 1000-1200 | 550 | 600 | 500 | 540 |
| Specific gravity | 1.004 | 1.16 | 1.02 | 1.12 | 1.02 | 1.08 |
| Compound ratio (vol.) | 100 | 100 | 100 | 100 | 100 | 100 |
Substrate cracking resistance
| AQ2000 | AQ3000 | AQ4000 | |
|---|---|---|---|
| Coating thickness (mm) | 2 | 2 | 2 |
| Zero span (mm) | 20 | 15 | 21 |
General physical properties
| AQ2000 | AQ3000 | AQ4000 | |
|---|---|---|---|
| Hardened material density（Mg/m3） | 1.0 | 1.0 | 1.0 |
| Hardness (JIS) Type A Type D |
95 | 95 | 78 |
| 48–52 | 45 | *** | |
| Set-to-touch time(seconds/20°C) | 15–20 | 8–15 | 10–25 |
| Initial hardening time(seconds/20°C) | 6–8 | 2–4 | 15–20 |
Up to 15-year warranty
What is polyurea?
Polyurea resin was developed in the United States in the 1980s and was expanded into a variety of applications in the 1990s. These applications include anti-explosion protection in military facilities. The exceptional properties of polyurea find use as a waterproofing material in buildings when long service life is required.
Confirmed 30-year-equivalent durability
in JASS8 performance testing*
*Compatible with maximum 15-year warranties!
*See the report "Research on the Development of Methods for Quality Control and Maintenance in Exterior Waterproofing for Long-Term Use in Buildings" from the Building Research Institute
Circles represents the mesh of molecules that compose the resin. At each atomic level in the composition of finer resins, atoms reach out for connections to further strengthen their bonds.
Polyurethane resin
Urethane resins bond (interact) weakly at finer atomic levels, bonding only at the simple molecular level. The bonds are also vulnerable to ultraviolet rays.
Polyurea resin
Atoms are connected to each another at a finer level than the molecular level, resisting deterioration over a long period.
AQUA HAJIKUN experiments
Can the color of the finish be selected?
Different colors are available for the top coat. Color swatches are available. Please inquire for details.
Does AQUA HAJIKUN release odors during installation?
The installation of AQUA HAJIKUN itself releases no odors. However, some odors may result during the application of primers and top coats.
Is curing required?
As AQUA HAJIKUN is applied through spraying, curing is required to prevent dispersal. Dry curing until the day after application is also required, so take care to protect the site after application.
What is the thickness of the waterproof film?
Specifications cover waterproof film thicknesses of 2mm and 3mm. A 4.5mm specification is also available for parking spaces.
What is the service life of AQUA HAJIKUN?
Based on JASS8 waterproofing work performance testing under the Architectural Institute of Japan Construction Standard Specifications and Commentary, the equivalent of 30-year durability has been confirmed. AQUA HAJIKUN boasts performance that enables long-term use with confidence.
Can AQUA HAJIKUN be used in government projects?
Installation methods are available that comply with standard specifications for public building renovation projects. Accordingly, the product can be used with confidence in government projects.
How does AQUA HAJIKUN differ from other waterproofing materials?
AQUA HAJIKUN uses polyurea resin and thus yields physical properties and appearance similar to those of urethane waterproofing materials. However, it offers far greater performance in terms of strength, durability, and warranty period. We believe that it is a superior choice over other waterproofing materials.
