Long-Term Water Tank Life Extension MethodSus Coating
No Repainting
No Tank Replacement Required
Japanese Patented Technology
Protecting Life-Sustaining Water
An option to use existing tanks longer and more safely without replacement
Applied directly
to base material
without primer
ContainsSUS316L
Numerous installations
in Japan
Blocks light transmission
for hygienic water storage
Applicable regardless
of installation location
Transforms
appearance
is
The only water tank life extension method utilizing patented technology
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Water storage tanks have a standard service life of 15 years, as determined by structural design calculation methods for water tanks.
FRP water storage tanks suffer from aging degradation, leading to exposed and scattered glass fibers from the reinforcing material. Conventional countermeasures like light-blocking coatings or FRP lining only provide temporary repairs.
Degraded panels carry an increased risk of damage, leading to more cases requiring urgent repairs.
Sus Coating is a revolutionary technology that protects the base material using stainless steel pigment (SUS316L) and special resin, eliminating the need for primer.
It is not merely a surface treatment through painting, but an external coating technology that fundamentally extends the lifespan of water tanks, becoming the new standard in the water tank maintenance industry.
MOVIE
Learn more about Sus Coating in our video
RISK OF DELAY
Water tank replacement is inevitable...
Putting off replacement work because it ‘still works’ can lead to
water storage issues,
or necessitate unnecessary repairs like panel damage...
Water Tank Rupture Accidents Due to Aging Deterioration
Recent abnormal weather has accelerated water tank deterioration. In 2020, a commercial facility's water tank ruptured due to aging deterioration, unable to withstand the internal water pressure.
Putting off tank replacement because it “still works” not only compromises water storage hygiene but also risks unnecessary repairs due to panel damage and even potential human casualties.
Tank replacement and maintenance are essential before such disasters occur.
Is your water storage safe and secure?
FRP deteriorates in about 10 years, allowing sunlight to penetrate. This causes photosynthesis inside the tank, leading to algae growth and bacterial proliferation.
Even if the tank interior is cleaned annually, it often returns to the same condition within six months, sometimes containing dirt and bacteria.
Applying Sus Coating
"With Sus Coating's specialized treatment, water tank replacement becomes unnecessary.
No repainting is required, enabling long-term extension of the tank's base material lifespan."
WHY CHOOSE US
The Reasons Why
is
Chosen
Light Blocking
With 0% total light transmittance, it prevents algae and bacteria growth inside the tank, preserving water quality.
Weather Resistance
A coating with stainless steel pigments protects the tank from salt damage, sunlight, acids, and more.
Rust Prevention
Forms a highly corrosion-resistant coating, preventing rust and corrosion on metal parts.
Adaptability
Can be applied directly to virtually any substrate material except silicone.
Adhesion
Can be applied without a primer coat on the substrate, preventing damage to the base material.
Cost-Effectiveness
Significantly reduces costs compared to tank replacement.
Environmental Benefits
Extends the lifespan of existing tanks, reducing industrial waste generation.
Short Construction Period
No water shutdown required; only external coating needed. Fast-drying properties minimize construction time.
Reliable test data guarantees quality
To ensure reliable use,
Sus Coating undergoes rigorous testing by third-party institutions, including weather resistance tests, adhesion tests, coating strength tests, and salt spray tests.
Test results demonstrate perfect performance, covering not only light-blocking properties but also coating strength.
For details, see the [Various Test Data] below.
Calculated for a 4m (H) x 5m (W) x 2.5m (D) 50t elevated water tank
Estimates in Japan
LONG-TERM VALUE
A valuable choice
considering the next 20 to 30 years
Installed on a tank 15 years after installation, it has now been 22 years,
preventing paint film peeling and rust on the support frame bolts.
(As of 2025)
REPAIR
Before and After Installation
Manhole Cover
Contains the “exposed fiberglass” commonly seen in many water tanks, halting deterioration.
Before Installation
After Installation
Light Blocking Inside the Tank
Prevents algae growth and bacterial proliferation by blocking light transmission, maintaining hygienic water storage.
Before Installation
After Installation
CASE STUDY
Implementation Track Record
Commercial Facilities
Hospitals
Office Buildings
Schools
Hot Spring Facilities
Food Processing Plants
The patented “Sus Coating” technology extends
the lifespan of water storage tanks, contributing to society.
Safe Water and Sanitation for All
Applying Sus Coating contributes to water quality preservation, ensuring safe and secure water supplies.
Sustainable Cities and Communities
Sus Coating significantly extends the lifespan of water storage tanks beyond normal expectations, protecting environments where people can live sustainably.
Responsible Production and Consumption
Sus Coating reduces industrial waste by extending the lifespan of existing water tanks.
FAQ
Frequently Asked Questions
QIs repainting unnecessary after applying Sus Coating?
A
No renewal or repainting is required.
With 39 years of proven results, various tests confirm it does not degrade the base material.
QHow long does the water need to be shut off?
A
Sus Coating can be applied while the tank is in use, so there is no need to worry about water outages.
QCan it be applied to a water tank over 20 years old?
A
Yes. While applying it to a new tank preserves the base material as new,
it can also be applied to tanks over 20 years old if they are currently usable.
QHow much savings can we expect?
A
Replacing a 50-ton tank costs approximately ¥15 million, and replacement is typically needed again in about 20 years.
Sus Coating, on the other hand, is a unique tank life extension method costing around ¥6 million that eliminates the need for repainting.
QCan you estimate the total cost?
A
"Please contact us via the form below, and we will send you an estimate request form.
Once you complete the necessary details on the estimate request form, we will provide you with an estimate within about one week."
QIs it possible to become a distributor?
A
"We are recruiting authorized sales distributors for Sus Coating nationwide.
For details, please contact us via the inquiry form below.
*We are not recruiting construction contractors."