Surface water drainage products and systems to collect, treat, store and release stormwater and rainwater from highways, pavements, industrial hardstandings and driveways on EXTERNAL WORKS. Helping you find the best product for your project.
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  • Hydro International: Hydro-Brake® Agile flow control
    Hydro-Brake® Agile flow control
    Hydro International
    Hydro-Brake® Agile is a float-activated flow control that extends the Hydro-Brake® Flow Control Series. It can be engineered to achieve the lowest possible flood storage volumes in one simple, cost-effective and...
  • Marshalls: Birco 100 grid drainage system
    Birco 100 grid drainage system
    Marshalls
    The Birco 100 grid drainage system is suitable for a wide range of applications up to Class F900, when used with the appropriate grating. The system, which has a 100mm-wide channel, includes a variety of channel depths and...
  • Althon: Althon CH 525 high capacity GRC drainage channel 325l/m
    Althon CH 525 high capacity GRC drainage channel 325l/m
    Althon
    Althon CH 525 precast GRC drainage channels. Trapezoidal profile. High capacity of 325 l/m. Channel width 533mm. Overall dimensions L1200mm x W725mm x D945mm. Choice of 9 lids for C250 and D400 loadings. Suitable for large...
  • Althon: SFA10 A headwall, backwall height 800
    SFA10 A headwall, backwall height 800
    Althon
    SFA10 B precast concrete headwall for connecting pipework discharging into open watercourses. Sewers for Adoption compliant. Pipework up to 300mm. Backwall height 800mm.
  • Althon: SFA20 B headwall, backwall height 1650
    SFA20 B headwall, backwall height 1650
    Althon
    SFA20 B precast concrete headwall for connecting pipework discharging into open watercourses. Sewers for Adoption compliant. Pipework up to 1050mm. Backwall height 1650mm
  • Polypipe Civils: Permachannel stormwater collection drainage
    Permachannel stormwater collection drainage
    Polypipe Civils
    Permachannel is a linear drainage system designed for collecting and treating stormwater. The system comprises single or multiple interconnected channels appropriately located to collect surface water run off from...
  • Polypipe Civils: Permavoid shallow geocellular water management system
    Permavoid shallow geocellular water management system
    Polypipe Civils
    Permavoid is a geocellular water management system designed to provide stormwater retention, attenuation or infiltration in shallow applications. It can be used as part of an engineered or soft SuDS solution. The system...
  • Althon: Precast concrete headwalls for culverts
    Precast concrete headwalls for culverts
    Althon
    Althon culvert headwalls recess the inflow and outflow at the end of the pipe or culvert into the slope to improve entrance flow conditions, and to anchor the pipe and prevent disjointing due to excessive velocities
  • Polypipe Civils: Polystorm Access shaft for geocellular systems
    Polystorm Access shaft for geocellular systems
    Polypipe Civils
    Polystorm Access shaft enables surface access into Polystorm geocellular structures for remote camera inspection and maintenance activities, such as flushing and rodding. The system consists of a 500mm diameter shaft...
  • ACO Water Management: ACO DrainMat threshold drainage
    ACO DrainMat threshold drainage
    ACO Water Management
    ACO DrainMat is safe and convenient, as with traditional matwells, but eliminates the risk of water ponding at domestic entrances. The system is compliant with Part M of the Building Regulations for England and Wales and...
  • Marshalls: Birco 300 AS grid drainage system
    Birco 300 AS grid drainage system
    Marshalls
    Birco 300 is a high capacity linear drainage system designed for areas with abnormally heavy wheel loads such as docks and aircraft pavements. Birco 300 is designed to manage the large surface discharges generated by...
  • Althon: Bespoke precast concrete headwalls
    Bespoke precast concrete headwalls
    Althon
    Althon offers a full design and build service for bespoke headwall requirements, resulting in the manufacture and supply of a precast bespoke headwall that is uniquely tailored to a specific set of criteria.
  • Althon: Precast concrete headwalls with penstocks
    Precast concrete headwalls with penstocks
    Althon
    Althon precast concrete headwalls can be supplied to site with factory-fitted penstocks. As standard, Althon offers penstocks fitted to headwalls to suit pipework from 100 up to 1500mm. When required, Althon can provide...
  • Althon: SFA27 D headwall, backwall height 2350
    SFA27 D headwall, backwall height 2350
    Althon
    SFA27 D precast concrete headwalls are designed to comply with Sewers for Adoption guidelines for pipework discharging into open watercourses for concrete pipework up to 1600mm and plastic / clay pipework up to 1800mm: up to...
  • Ruthin Precast Concrete: Precast concrete drainage chamber system
    Precast concrete drainage chamber system
    Ruthin Precast Concrete
    Offers a drainage chamber system that allows water chambers of different sizes and configurations to be constructed. They feature Interlocking joint to ensure maximum strength and rigidity. Manufactured in modern controlled...