Business Details
40 Years
experience
Emergency
services
Trusted Hydraulic Asphalt Solutions for Erosion Protection
Hesselberg Hydro has been pioneering hydraulic asphalt engineering since 1986, delivering erosion protection solutions for critical infrastructure across the UK. Our expertise spans dams, reservoirs, rivers, coasts, ports, and offshore assets, combining technical precision with sustainability. We provide end-to-end services from feasibility studies and design to installation, inspection, and maintenance. Our systems offer faster deployment, lower carbon footprints, and proven longevity, with projects like Megget Reservoir demonstrating 28 years of zero-maintenance performance. Trusted by the Environment Agency and major infrastructure partners, we focus on resilient, adaptable solutions that outperform traditional methods.Our team's deep experience in hydraulic conditions ensures tailored systems resistant to extreme flows and wave impacts. We operate under accredited standards, prioritising quality, safety, and environmental stewardship. With specialist asphalt testing labs and patented innovations like Marine Mastic Granules, we continuously advance industry practices. Our commitment to reducing embodied carbon by up to 75% compared to concrete aligns with global sustainability goals while maintaining structural integrity.
Services
Erosion Protection
Hydraulic Asphalt Systems
Coastal Protection
Dam & Reservoir Lining
Riverbank Stabilization
Subsea Impact Protection
Grouted Rock Systems
Asphalt-Filled Geomats
Waterproofing Inspections
Flood Defence Systems
Details
- Year established: 1986
Highlights and features
- We deliver 24x faster installation than concrete, reducing project disruption
- Our systems achieve up to 75% lower embodied carbon than traditional methods
- Proven performance under 6m waves and 8.5m/s flow velocities
- 28 years of zero-maintenance performance demonstrated at Megget Reservoir
- Specialist R&D labs ensure tailored solutions for extreme hydraulic conditions
What people say
Delighted with project results
Robust long-term solution
Sustainable flood defence system
Proven performance under stress
Reduced maintenance burden
Services
Erosion Protection
Engineered asphalt systems stabilise riverbanks, estuaries, and coasts against erosion. Flexible and durable, they resist high-velocity flows and wave energy. Proven to withstand 8.5m/s flows and 6m waves, these systems protect infrastructure while accommodating natural movement.
Hydraulic Asphalt Systems
Specialist asphalt mixes including Lean Sand Asphalt and Open Stone Asphalt provide hydraulic protection. These porous systems combine flexibility with strength, offering 75% lower carbon impact compared to concrete while maintaining structural integrity under extreme conditions.
Coastal Protection
Asphalt revetments absorb wave energy and resist scour at coastal locations. Proven in 6m wave conditions, these systems provide long-term protection where traditional concrete blocks have failed, as demonstrated at Harwich and Shoeburyness.
Subsea Impact Protection
Asphalt mattresses and grouted rock systems protect subsea pipelines and cables. Rapid installation with reduced diver time improves safety while maintaining protection against anchors, crossings, and rock dumping in offshore environments.
Waterproofing Inspections
Condition surveys and integrity testing maintain asphalt linings for dams and reservoirs. Targeted repairs and surface reinstatement prevent leakage, with ongoing monitoring extending service life beyond conventional concrete systems.
Questions
Can asphalt systems be installed underwater?
Yes, our Lean Sand Asphalt and Open Stone Asphalt mixes can be placed and compacted underwater for scour protection and subsea works.
How long do asphalt protection systems last?
Our systems demonstrate over 25 years of maintenance-free performance, as proven at Megget Reservoir since 1998.
How does asphalt compare to concrete for erosion protection?
Our asphalt systems install 23 times faster, adapt to settlement without cracking, and have 75% lower embodied carbon than concrete.
What hydraulic conditions can your systems withstand?
Our tested systems resist flows up to 8.5m/s and waves up to 6m, suitable for extreme flood and coastal conditions.
What maintenance is required for asphalt protection systems?
Our systems require minimal maintenance with periodic inspections, allowing localised repairs without large-scale disruption.
