Ultra-High Pressure Water Jetting
Precision Surface Preparation by UCL
At Ultimate Coatings Limited (UCL), we recognise that optimal adhesion and longevity of industrial coatings depend entirely on superior surface preparation. Among our advanced techniques, Ultra-High Pressure (UHP) Water Jetting stands out as a highly effective, environmentally responsible, and versatile method for preparing a wide range of surfaces. Utilising water pressurised to extreme levels, UHP water jetting achieves an exceptional degree of cleanliness and prepares substrates without causing damage or generating hazardous dust.
UCL’s Expertise in UHP Water Jetting
At UCL, our approach to Ultra-High Pressure Water Jetting combines state-of-the-art equipment with highly trained and certified operators. We understand that effective UHP jetting is not just about pressure; it’s about control, technique, and safety.
Our team assesses each project to determine the optimal pressure, nozzle configuration, and application technique to achieve the required surface cleanliness and profile (e.g., ‘wet abrasive blasting’ can combine the effectiveness of water jetting with a minimal amount of abrasive). We adhere strictly to industry standards, ensuring that surfaces are prepared to specification for the ultimate performance of the chosen coating system.
For unparalleled surface preparation that is both effective and environmentally responsible, trust Ultimate Coatings Limited. Our UHP Water Jetting services provide the clean, stable foundation necessary for long-lasting industrial coatings.
What is Ultra-High Pressure Water Jetting?
UHP Water Jetting involves propelling water at pressures typically ranging from 10,000 psi (700 bar) up to an incredible 40,000 psi (2750 bar) through a small nozzle. The sheer force of the water stream is capable of removing tenacious contaminants, existing coatings, rust, scale, and other surface impurities. Unlike traditional abrasive blasting, UHP water jetting achieves its cleaning power through kinetic energy and cavitation, effectively breaking the bond between the contaminant and the substrate.
The Key Advantages of UHP Water Jetting
Choosing Ultra-High Pressure Water Jetting for your surface preparation offers significant benefits, especially in demanding industrial environments:
- Exceptional Cleaning Power: Capable of removing even the most stubborn residues, including tightly adhered paints, thick rust layers, mill scale, and difficult-to-remove contaminants.
- Minimal Environmental Impact: As it uses only water, UHP jetting significantly reduces airborne dust and eliminates the need for hazardous chemical solvents or abrasive media, making it an eco-friendlier solution.
- No Abrasive Contamination: Leaves behind no abrasive residue, ensuring a perfectly clean surface ready for coating. This is critical in sensitive applications where even trace amounts of grit could cause issues.
- Prevents Substrate Damage: When performed by skilled technicians, UHP water jetting cleans without damaging the underlying substrate, preserving the integrity of the material, whether it’s concrete, steel, or composites.
- Safe for Sensitive Areas: The absence of sparks or heat generation makes it ideal for use in potentially explosive atmospheres or environments where fire hazards are a concern.
- Versatility: Effective on a wide array of materials, including steel, concrete, fibreglass, and various alloys.
- Reduced Downtime: In many cases, it allows for quicker preparation compared to other methods, leading to reduced project timelines.
Typical Applications for UHP Water Jetting
UCL’s expertise in UHP Water Jetting makes it an ideal solution for numerous industrial applications:
- Tank Cleaning & Preparation: Essential for the internal and external cleaning of storage tanks (e.g., fuel tanks, water tanks) before inspection or relining, effectively removing sludge, residues, and old linings. This is vital for projects like Benzene Fuel Storage Tank Clean & Gas Free Surface Preparation.
- Pipeline Descaling & Cleaning: Removing scale, corrosion, and deposits from internal and external pipeline surfaces without mechanical abrasion.
- Marine & Offshore Structures: Ideal for preparing ship hulls, offshore platforms, and marine equipment where efficient rust and paint removal is critical and abrasive blasting may not be feasible
- Concrete Preparation: Cleaning and profiling concrete surfaces for subsequent coatings, overlays, or repairs, including removing laitance, old coatings, and contaminants.
- Industrial Equipment & Machinery: Precision cleaning of machinery and equipment to remove grease, paint, and contaminants during maintenance or before coating.
Contact UCL today to discuss your surface preparation needs and learn how our Ultra-High Pressure Water Jetting capabilities can benefit your project. Contact Us.
Our Work:
Dancing Hill Reservoir: Concrete Repair and Waterproofing
The internal structure of Dancing Hill Reservoir was exhibiting signs of advanced concrete degradation, including pitting and spalling. These defects threatened the reservoir’s long-term performance and its ability to maintain watertight integrity. A durable, technically robust refurbishment was required to prepare the structure for continued service.

Thames Water – Little Marlow Cake Barn
At Thames Water’s Little Marlow Cake Barn, we helped boost processing capacity by 30% — while installing 1,600 sqm of high-performance Sika® Ucrete® IF flooring under live operational conditions.

Benzene Fuel Storage Tank – Clean, Gas-Free & Surface Preparation for EEMUA 159 Inspection
Ultimate Coatings Ltd was commissioned by a major UK chemical manufacturer to carry out the specialist cleaning, de-gassing, and surface preparation of a benzene fuel storage tank…