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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  • Althon: Althon CH 250 high capacity GRC drainage channel 87l/m
    Althon CH 250 high capacity GRC drainage channel 87l/m
    Althon
    Althon CH 250 precast GRC drainage channels. Trapezoidal profile. High capacity of 87 l/m. Channel width 254mm. Overall dimensions L2000mm x W380mm x D515mm. Choice of 9 lids for C250 and D400 loadings. Suitable for large...
  • ACO Water Management: ACO RainDrain® domestic drainage
    ACO RainDrain® domestic drainage
    ACO Water Management
    ACO RainDrain® is a lightweight channel drainage system designed to provide surface water drainage for a range of domestic and light-duty traffic applications. Manufactured from polymer concrete, a tough resin material, the...
  • 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...
  • Althon: Large precast concrete headwalls
    Large precast concrete headwalls
    Althon
    Althon large precast headwalls are suitable for pipe sizes ranging from 750 to 1200mm concrete or plastic pipework. Headwall openings are cast to suit the outside diameter of the connecting pipework. Large headwalls can be...
  • Althon: Galvanised steel orifice plates - flat
    Galvanised steel orifice plates - flat
    Althon
    Orifice plates in galvanised steel to restrict and regulate the flow of water. The opening in the plate can be manufactured to specified dimensions and positions. All necessary fixing materials and an EPDM seal with every...
  • Althon: 316 stainless steel orifice plates - flat
    316 stainless steel orifice plates - flat
    Althon
    Flat orifice plates in 316 stainless steel to restrict and regulate the flow of water. The opening in the plate can be manufactured to specified dimensions and positions. All necessary fixing materials and an EPDM seal with...
  • Althon: Chieftan inspection chamber 1220 x 1070 x 2340
    Chieftan inspection chamber 1220 x 1070 x 2340
    Althon
    The Althon Range of Chieftan Precast Inspection Chambers has been designed to make installation on-site as straightforward as possible. Each inspection chamber comes in two halves with a reinforced cover slab. The units are...
  • Althon: High-capacity channel drainage systems
    High-capacity channel drainage systems
    Althon
    Althon's high-capacity channel drainage systems are made from glass-reinforced concrete. This enables the installation of long, uninterrupted runs, without the need for intermediate outfalls. The trapezoidal-shape of the...
  • ACO Water Management: ACO HexDrain® Brickslot drainage channel
    ACO HexDrain® Brickslot drainage channel
    ACO Water Management
    ACO HexDrain® Brickslot is a high-quality, high-strength domestic slot drainage channel. It provides a discreet slot drainage system for domestic block paving installation and threshold drainage. Manufactured from 100%...
  • Hydro International: Downstream Defender® advanced hydrodynamic separator
    Downstream Defender® advanced hydrodynamic separator
    Hydro International
    Downstream Defender® is an advanced hydrodynamic vortex separator for the removal of sediment, oil and floatables from stormwater run-off. The Downstream Defender® is proven to be more efficient than other structural...
  • Althon: Chieftan inspection chamber 1830 x 1375 x 780
    Chieftan inspection chamber 1830 x 1375 x 780
    Althon
    The Althon Range of Chieftan Precast Inspection Chambers has been designed to make installation on-site as straightforward as possible. Each inspection chamber comes in two halves with a reinforced cover slab. The units are...
  • Polypipe Civils: Permavoid Biomat geocellular system for oil removal
    Permavoid Biomat geocellular system for oil removal
    Polypipe Civils
    The Permavoid Biomat units are similar in structure to standard Permavoid geocellular units for surface water storage, but with the inclusion of an oil-intercepting floating mat. The Biomat treats residues or emulsified oils...
  • Althon: Chieftan inspection chamber 1830 x 1675 x 1085
    Chieftan inspection chamber 1830 x 1675 x 1085
    Althon
    The Althon Range of Chieftan Precast Inspection Chambers has been designed to make installation on-site as straightforward as possible. Each inspection chamber comes in two halves with a reinforced cover slab. The units are...
  • Marshalls: Max-E Channel high-capacity linear drainage system
    Max-E Channel high-capacity linear drainage system
    Marshalls
    Max-E Channel is a high-capacity linear drainage system that complements the Beany range of drainage kerbs to ensure continuity between kerb and top units. It is suitable for pedestrian traffic, motor cars and occasional...
  • 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...