Sustainable drainage solutions

SEL have assisted Developers, Architects, Engineers and Contractors in the provision of innovative sustainable drainage solutions throughout the UK for nearly 20 years. SEL have an extensive range of solutions, products and services specifically designed and developed for the Suds market. Below is a brief summary of where we can help you.

areas of Expertise

  • Suds drainage for housing
  • Suds drainage for commercial
  • Permeable pavement systems
  • Suds solutions for car parks
  • Flow control chambers
  • Podium decks
  • Rooftop facilities
  • Blue roofs / green roofs
  • Retrofitting of Suds
  • Rainwater control & management
  • Surface water attenuation tanks
  • Rain gardens
  • Rainwater harvesting

Source Control

The main principle of SEL Source is to apply Source Control, a cornerstone of good Sustainable Design. Our aim is to deal with water when and where it falls (source control). By dealing with runoff at source the volume of water and the potential amount of contamination is less, which requires smaller SuDS components further downstream. Often source control components are within the curtilage of properties and maintained by the property owner or manager and can include green roofs, permeable surfaces, rainwater harvesting and water butts. Source controls look to maximise permeability within a site to promote attenuation, treatment and infiltration reducing offsite conveyance wherever possible. All our solutions incorporate Sustainable Drainage (SuDS) techniques and provide treatment phases which meet current guidelines and legislation relating to SUDS. 

Below are some current brochures.

  • SEL Source PP focuses on our permeable pavement systems for housing
  • Greenstreets for London is a case study on a pioneering retrofit suds project SEL are involved with in London

SEL have been involved in numerous CIRIA projects and the publication of several white papers. SEL have developed a reputation to provide high quality systems and an all round service. SEL excel where the works aren't run of the mill and our engineering ability is put to the test to provide a technical solution.

Achievements Co-Author on the following published technical papers:

  • The Next Generation of Oil Trapping Porous Pavement Systems
  • Recent Developments In Oil Degrading pervious Pavement Systems
  • Improving Sustainability
  • Flow resistance of panel of geosynthetic materials used for conveyance in stormwater source control
  • Performance of an oil interceptor incorporated into a pervious pavement

Steering group member of:

  • CIRIA Project RP637 Source control using constructed pervious surfaces, hydraulic, structural and water quality performance issues
  • CIRIA Project RP663 SUDS hydraulic, structural and water quality advice
  • CIRIA Project RP664 Model Agreements for sustainable water management systems
  • CIRIA Project RP697: SUDS updated guidance on technical design and construction
  • CIRIA Project RP698: SUDS – promoting good practice
  • CIRIA Project RP714 Biodiversity and Buildings HR Wallingford Report SR656 The use of SUDS in high density developments

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