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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. 

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    Cascade Rainwater 65mm Square Cast Iron Effect 92.5' Spigot Bend Arctic White 100 x 95 x 65mm

    Cascade Rainwater 65mm Square Cast Iron Effect 92.5' Spigot Bend Arctic White 100 x 95 x 65mm is a quick & easy product to Install due to it's lightweight and durable nature. This is commonly used to allow the 65mm square downpipe to connect to the...
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    Cascade Rainwater 65mm Square Cast Iron Effect Downpipe Bracket Black 93 x 140 x 45mm

    Used to fix Brett Martin's 65mm cast iron effect square downpipe to the wall using the external lugs. 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...
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    Cascade Rainwater 65mm Square Cast Iron Effect Downpipe Bracket White 112 x 95 x 20mm

    Cascade Rainwater 65mm Square Cast Iron Effect Downpipe Bracket White 112 x 95 x 20mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to fix Brett Martin's 65mm square downpipe to the wall. All Brett Martin products...
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    Cascade Rainwater 65mm Square Cast Iron Effect Socketed Downpipe & Lugs Arctic White 2500 x 65 x 65mm

    Cascade Rainwater 65mm Square Cast Iron Effect Socketed Downpipe & Lugs Arctic White 2500 x 65 x 65mm is a quick & easy product to Install due to it's lightweight and durable nature. Gloss effect uPVC 65mm square downpipe compatible with Brett Martin's...
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    Cascade Rainwater 65mm Square Cast Iron Effect Socketed Downpipe & Lugs Black 2500 x 160 x 160mm

    Cascade Rainwater 65mm Square Cast Iron Effect Socketed Downpipe & Lugs Black 2500 x 160 x 160mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable...
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    Cascade Rainwater 65mm Square Cast Iron Effect Socketed Downpipe & Lugs White 2500 x 65 x 65mm

    Cascade Rainwater 65mm Square Cast Iron Effect Socketed Downpipe & Lugs White 2500 x 65 x 65mm is a quick & easy product to Install due to it's lightweight and durable nature. Gloss effect uPVC 65mm square downpipe compatible with Brett Martin's 106mm...
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    Cascade Rainwater 68mm Cast Iron Effect Adjustable Offset Black 100 x 325 x 550mm

    Cascade Rainwater 68mm Cast Iron Effect Adjustable Offset Black 100 x 325 x 550mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for both new...
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    Cascade Rainwater 68mm Lug Fixing Pack Black 205 x 275 x 390mm

    68mm or 75mm Round Plastic Cast Iron Style Lug Fixing Packs to perfectly complement the classic black colour of our Cascade cast iron effect rainwater system. Complete the look by removing ill matching unsightly fixing kits for your new stylish gutters...
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    Cascade Rainwater 68mm Round Cast Iron Effect 115mm Offset Anthracite Grey 240 x 183 x 70mm

    Cascade Rainwater 68mm Round Cast Iron Effect 115mm Offset Anthracite Grey 240 x 183 x 70mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for...
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    Cascade Rainwater 68mm Round Cast Iron Effect 135' Bend Anthracite Grey 120 x 120 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect 135' Bend Anthracite Grey 120 x 120 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for both...
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    Cascade Rainwater 68mm Round Cast Iron Effect 135' Bend Black 120 x 120 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect 135' Bend Black 120 x 120 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for both new build...
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    Cascade Rainwater 68mm Round Cast Iron Effect 150mm Offset Black 240 x 218 x 70mm

    Cascade Rainwater 68mm Round Cast Iron Effect 150mm Offset Black 240 x 218 x 70mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for both new...
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    Cascade Rainwater 68mm Round Cast Iron Effect 230mm Offset Black 240 x 298 x 70mm

    Cascade Rainwater 68mm Round Cast Iron Effect 230mm Offset Black 240 x 298 x 70mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for both new...
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    Cascade Rainwater 68mm Round Cast Iron Effect 305mm Offset Black 240 x 373 x 70mm

    Cascade Rainwater 68mm Round Cast Iron Effect 305mm Offset Black 240 x 373 x 70mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for both new...
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    Cascade Rainwater 68mm Round Cast Iron Effect 75mm Offset Anthracite Grey 240 x 143 x 70mm

    Cascade Rainwater 68mm Round Cast Iron Effect 75mm Offset Anthracite Grey 240 x 143 x 70mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for...
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    Cascade Rainwater 68mm Round Cast Iron Effect 92.5' Spigot Bend Black 120 x 120 x 73mm

    Allows the 68mm cast iron effect round downpipe to continue via a 92½° bend. 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...
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    Cascade Rainwater 68mm Round Cast Iron Effect Anti-Splash Shoe with Lugs Black 299 x 125 x 140mm

    Cascade Rainwater 68mm Round Cast Iron Effect Anti-Splash Shoe with Lugs Black 299 x 125 x 140mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable...
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    Cascade Rainwater 68mm Round Cast Iron Effect Downpipe Bracket Anthracite Grey 100 x 22 x 114mm

    Cascade Rainwater 68mm Round Cast Iron Effect Downpipe Bracket Anthracite Grey 100 x 22 x 114mm is a quick & easy product to Install due to it's lightweight and durable nature. Allows the 68mm cast iron effect round downpipe to be fixed to walls or other...
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    Cascade Rainwater 68mm Round Cast Iron Effect Left Hand 112.5' Spigot Bend Black 120 x 120 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect Left Hand 112.5' Spigot Bend Black 120 x 120 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable...
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    Cascade Rainwater 68mm Round Cast Iron Effect Plain Coupler & Lugs Anthracite Grey 105 x 73 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect Plain Coupler & Lugs Anthracite Grey 105 x 73 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to connect Cascade cast iron effect 68mm round downpipe lengths. All...
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    Cascade Rainwater 68mm Round Cast Iron Effect Plain Coupler & Lugs Black 105 x 73 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect Plain Coupler & Lugs Black 105 x 73 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to connect Cascade cast iron effect 68mm round downpipe lengths. All Brett...
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    Cascade Rainwater 68mm Round Cast Iron Effect Plain Coupler Black 73 x 73 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect Plain Coupler Black 73 x 73 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. Compatible with Brett Martin's 68mm round downpipe and used to join pipe lengths. All Brett...
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    Cascade Rainwater 68mm Round Cast Iron Effect Plinth Offset & Lugs Black 800 x 150 x 100mm

    Cascade Rainwater 68mm Round Cast Iron Effect Plinth Offset & Lugs Black 800 x 150 x 100mm is a quick & easy product to Install due to it's lightweight and durable nature. A range of quality uPVC Rainwater gutter and downpipe systems are suitable for...
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    Cascade Rainwater 68mm Round Cast Iron Effect Shoe & Lugs Anthracite Grey 140 x 92 x 73mm

    Cascade Rainwater 68mm Round Cast Iron Effect Shoe & Lugs Anthracite Grey 140 x 92 x 73mm is a quick & easy product to Install due to it's lightweight and durable nature. Fits to the base of the 68mm cast iron effect round downpipe to direct rainwater...

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.

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