Enviroseal has earned a reputation as one of the UK’s foremost experts in attenuation tank installations, combining decades of industry experience with a commitment to environmental responsibility and long-term performance. Their nationwide service delivers tailored drainage solutions that meet the demands of modern developments, local planning authorities and sustainable drainage system (SuDS) regulations. Through high-quality geomembrane lining systems, rigorous installation standards and expert technical support, Enviroseal continues to set the benchmark for flood management and stormwater control infrastructure.
Specialist Lining for Attenuation Tanks
At the core of every Enviroseal attenuation tank installation is a durable geomembrane lining system. These liners—crafted from industry-leading materials like HDPE, LLDPE and polypropylene—create a watertight barrier within underground storage tanks, whether they are constructed from modular plastic crates or reinforced concrete chambers. The liners are specifically designed to prevent stored surface water from leaking into surrounding soil or groundwater, helping clients maintain strict environmental compliance. Enviroseal sources and installs only high-performance materials approved by the Environment Agency, providing clients with peace of mind that their attenuation systems meet legal and safety standards while protecting local ecosystems from contamination.
Bespoke Solutions Across the UK
Enviroseal’s approach is not one-size-fits-all. Their team of engineers and technicians assess every project on its own terms, tailoring each installation to match site-specific requirements such as soil conditions, tank dimensions, drainage layout and expected water load. From commercial supermarkets and housing estates to logistics parks and transport infrastructure, they bring in-depth knowledge to projects of all sizes and complexities. Their ability to customise liner thickness, weld type and anchoring techniques ensures that every attenuation tank performs efficiently, resists damage and supports the long-term sustainability of the wider development. By offering truly bespoke systems, Enviroseal helps clients reduce flood risk while delivering maximum return on infrastructure investment.
Environment Agency-Approved Leakage Detection
Enviroseal goes beyond basic installation by integrating advanced leakage detection systems within its attenuation tank designs. These systems—endorsed by the Environment Agency—allow operators to identify any potential liner breaches early and take corrective action before environmental harm occurs. Leakage detection technology is especially valuable in sensitive locations where groundwater protection is critical, such as near watercourses or in contaminated land remediation projects. Including these systems not only reinforces safety and environmental integrity but also demonstrates due diligence, which can support planning approval and stakeholder confidence.
Certified Welders and Quality Control
Precision installation is a hallmark of Enviroseal’s service. All liner seams are joined by skilled welders who are trained and certified under CSWIP and BS-TWI welding standards. These professionals use specialist hot wedge and extrusion welding equipment to deliver high-strength, watertight seals. Once installed, every seam undergoes extensive testing using air pressure, vacuum boxes or electronic spark techniques to confirm there are no leaks or weaknesses. This rigorous quality control process is key to ensuring that the entire attenuation tank system functions as intended from day one, reducing the risk of costly water losses or structural damage. Enviroseal’s meticulous attention to detail gives clients confidence in the resilience and longevity of their drainage infrastructure.
Comprehensive Warranty and Support
To ensure lasting performance, Enviroseal backs its attenuation tank systems with a comprehensive 25-year warranty covering both the liner materials and the installation workmanship. This warranty is a reflection of the company’s confidence in its processes, as well as its commitment to customer satisfaction. Clients also benefit from full technical support before, during and after installation, including site surveys, CAD design reviews, regulatory advice and maintenance guidance. By offering an end-to-end service that includes design input, professional installation, testing and long-term support, Enviroseal ensures that every attenuation tank they deliver is not only compliant and effective, but also built to withstand the test of time.
For further information or to discuss project requirements, please contact Enviroseal at 01695 228 626 or enquiries@enviroseal.co.uk.
