null

Drainage

Drainage moves surface water away from an area. Drainage products from sump units, gratings, couplings, end caps and much more; Howarth have everything you need to complete your drainage system. 

Filters

Check local branch stock

  • B7071.jpg.jpeg

    Brett Martin 160mm Screw Access Cover Terracotta 130 x 190 x 190mm

    Screw access cover for 160mm drainage layouts. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will satisfy current industry and legislative...
  • B5100.jpg.jpeg

    Brett Martin 160mm Spare Plug (Chamber) Black 50 x 190 x 190mm

    Spare plug for 160mm outlet on access and inspection chamber. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will satisfy current industry and...
  • B9131.jpg.jpeg

    Brett Martin 160mm Square Alloy Grid Silver 10 x 160 x 160mm

    160mm square alloy grid cover allowing rainwater to drain into gully whilst keeping debris from entering drain system. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of...
  • B1061.jpg.jpeg

    Brett Martin 160mm Square Hopper 110mm Solvent Socket Terracotta 160 x 160 x 104mm

    160mm x 160mm Square Hopper with solvent socket connection to 110mm drain system All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will satisfy...
  • B9151.jpg.jpeg

    Brett Martin 200mm Dished Grid Round Alloy Silver 10 x 200 x 200mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 200mm Dished Grid Round Alloy Silver 10 x 200 x 200mm are manufactured...
  • B20021.jpg.jpeg

    Brett Martin 200mm Double Socket PVC Coupler Terracotta 225 x 220 x 220mm

    A PVC double socket coupler available in either 200mm or 315mm. These products are manufactured in the UK and conform to BS EN 1401:2019 and Kite Marked. Fast and easy to install to install these products due to their lightweight and durable nature.
  • B2803.jpg.jpeg

    Brett Martin 280mm Shallow Access Chambers 280mm Dia 90' Chamber Base Black 360 x 230 x 360mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 280mm Shallow Access Chambers 280mm Dia 90' Chamber Base Black 360 x...
  • B2800.jpg.jpeg

    Brett Martin 280mm Shallow Access Chambers 280mm Dia Chamber Base Black 390 x 230 x 390mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 280mm Shallow Access Chambers 280mm Dia Chamber Base Black 390 x 230 x...
  • B2801.jpg.jpeg

    Brett Martin 280mm Shallow Access Chambers 280mm Dia Chamber Riser Black 280 x 210 x 280mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 280mm Shallow Access Chambers 280mm Dia Chamber Riser Black 280 x 210 x...
  • B2802.jpg.jpeg

    Brett Martin 280mm Shallow Access Chambers 300mm Square Double Seal Black 40 x 300 x 300mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 280mm Shallow Access Chambers 300mm Square Double Seal Black 40 x 300 x...
  • B6302.jpg.jpeg

    Brett Martin 300mm Yard Gully Grating Black 336 x 338 x 40mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 300mm Yard Gully Grating Black 336 x 338 x 40mm are manufactured under...
  • B31160.jpg.jpeg

    Brett Martin 315 x 160mm 45' Double Socket Reducing Branch Terracotta

    The Brett Martin, 315mm 45' Double Socket Reducing Branch Terracotta is an underground Sewer Pipe available in either 200mm or 315mm widths. Manufactured in the UK to BS EN 1401:2019 certification. Quick & Easy to Install. Kite Marked. Lightweight...
  • B31208.jpg.jpeg

    Brett Martin 315 x 200mm 87.5' Double Socket Branch Terracotta 660 x 360 x 580mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 315 x 200mm 87.5' Double Socket Branch Terracotta 660 x 360 x 580mm ...
  • B31315.jpg.jpeg

    Brett Martin 315 x 315mm 45' Double Socket Reducing Branch Terracotta

    The Brett Martin, 315mm 45' Double Socket Reducing Branch Terracotta is an underground Sewer Pipe available in either 200mm or 315mm widths. Manufactured in the UK to BS EN 1401:2019 certification. Quick & Easy to Install. Kite Marked. Lightweight &...
  • B3150.jpg.jpeg

    Brett Martin 315mm Dia Shallow Access Chamber Base Black 457 x 444 x 222mm

    Chamber base with 190mm invert and designed for 315mm access and inspection chambers in 110mm drainage layouts, comes with 2 socket plugs. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015...
  • B3151.jpg.jpeg

    Brett Martin 315mm Dia Shallow Access Chamber Riser Black 339 x 339 x 210mm

    Chamber riser with 185mm invert and designed for use with 315mm access chamber bases. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will...
  • B3154.jpg.jpeg

    Brett Martin 315mm Dia Shallow Access Chamber Sealed Lid (Driveway) Black 350 x 350 x 141mm

    A sealed lid for the 315mm diameter chamber assembly for use on areas where light traffic only (35kN). All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these...
  • B3153.jpg.jpeg

    Brett Martin 315mm Dia Shallow Access Chamber Sealed Lid (Pedestrian) Black 350 x 350 x 141mm

    A sealed lid for the 315mm diameter chamber assembly for use on pedestrianised areas only. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will...
  • B31022.jpg.jpeg

    Brett Martin 315mm Double Socket PVC Coupling Terracotta 300 x 360 x 360mm

    A PVC double socket coupler available in either 200mm or 315mm. These products are manufactured in the UK and conform to BS EN 1401:2019 and Kite Marked. Fast and easy to install to install these products due to their lightweight and durable nature.
  • B5696.jpg.jpeg

    Brett Martin 450mm 110mm Dia Chamber Base Black 570 x 570 x 230mm

    Base (225mm invert) for a 450mm access and inspection chamber assembly, designed with five 160mm inlet / outlet connections and supplied with three socket plugs. All Brett Martin products are manufactured under a quality management system certified to BS...
  • B6350.jpg.jpeg

    Brett Martin 450mm 350mm Reducer Black 450 x 450 x 30mm

    Our comprehensive range of underground products include pipes in up to 13 diameters from 58.9mm to 600mm, industry compliant fittings All Brett Martin products including Brett Martin 450mm 350mm Reducer Black 450 x 450 x 30mm are manufactured under a...
  • B5494.jpg.jpeg

    Brett Martin 450mm Dia Chamber Base Black 550 x 550 x 230mm

    Base (225mm invert) for a 450mm access and inspection chamber assembly, designed with five 110mm inlet / outlet connections and supplied with three socket plugs. All Brett Martin products are manufactured under a quality management system certified to BS...
  • B5397.jpg.jpeg

    Brett Martin 450mm Dia Chamber Riser Black 530 x 530 x 230mm

    Riser (315mm invert) for 450mm access and inspection chamber assembly. All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will satisfy current...
  • B6255.jpg.jpeg

    Brett Martin 450mm Dia Secured Plastic Cover for Driveways 50kN Black 578 x 578 x 77mm

    Round lid for 450mm access and inspection chamber (50kN). All Brett Martin products are manufactured under a quality management system certified to BS EN ISO 9001:2015 offering you peace of mind that these products will satisfy current industry and...

Drainage

The drainage of rainwater is significantly important when starting a construction project, as without any efficient drainage we would be prone to increased flooding, which could ultimately cause problems for buildings and the land itself.

Howarth Timber & Building Supplies works closely with ACO to provide solutions for surface water control, and our plastic drainage systems are lightweight and easy to use while offering flexibility and strength.

Our rainwater plastic plumbing systems are designed to collect and move rainwater to either allow for harvesting (ideal for watering the garden) or direct it into the main drainage system. This is especially important to do around buildings to prevent damage caused by a build-up of water. 

If you are interested in purchasing any drainage pipes or products, or are just seeking further advice, please contact your local friendly Howarth branch.

How to guides


Residential drainage solutions

Let’s look at the features to consider when installing residential water management solutions…


A Class Apart: Drainage Load Classes

A class apart: all you need to know when it comes to drainage.