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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 106mm Prostyle Cast Iron Effect Black 4000 x 114 x 62mm

    Cascade Rainwater 106mm Prostyle Cast Iron Effect Black 4000 x 114 x 62mm is a quick & easy product to Install due to it's lightweight and durable nature. This modern and contemporary Prostyle gutter measures 106mm across and is ideal for bungalows and...
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    Cascade Rainwater 106mm Prostyle Cast Iron Effect Fascia Bracket Black 46 x 135 x 78mm

    Cascade Rainwater 106mm Prostyle Cast Iron Effect Fascia Bracket Black 46 x 135 x 78mm 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 106mm Prostyle Cast Iron Effect Left Hand External Stopend Black 135 x 50 x 79mm

    Cascade Rainwater 106mm Prostyle Cast Iron Effect External Stopend Black (Right Hand) 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 106mm Prostyle Cast Iron Effect Running Outlet Black 135 x 179 x 130mm

    Cascade Rainwater 106mm Prostyle Cast Iron Effect Running Outlet Black 135 x 179 x 130mm 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 106mm Prostyle Cast Iron Effect Stopend Outlet Black 179 x 135 x 130mm

    Cascade Rainwater 106mm Prostyle Cast Iron Effect Stopend Outlet Black 179 x 135 x 130mm 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 106mm Prostyle Cast Iron Effect Union Bracket Black 102 x 135 x 79mm

    Cascade Rainwater 106mm Prostyle Cast Iron Effect Union Bracket Black 102 x 135 x 79mm 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 112mm Roundstyle Cast Iron Effect 90' Gutter Angle Black 170 x 170 x 84mm

    Cascade Rainwater 112mm Roundstyle Cast Iron Effect 90' Gutter Angle Black 170 x 170 x 84mm is a quick & easy product to Install due to it's lightweight and durable nature. Designed to allow the continuation of the 112mm Roundstyle gutter system at 90°...
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    Cascade Rainwater 112mm Roundstyle Cast Iron Effect External Stopend Black 40 x 135 x 84mm

    Cascade Rainwater 112mm Roundstyle Cast Iron Effect External Stopend Black 40 x 135 x 84mm is a quick & easy product to Install due to it's lightweight and durable nature. This fits to the end of the 112mm Roundstyle gutter length on the outside and...
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    Cascade Rainwater 112mm Roundstyle Cast Iron Effect Fascia Bracket Black 45 x 135 x 75mm

    Cascade Rainwater 112mm Roundstyle Cast Iron Effect Fascia Bracket Black 45 x 135 x 75mm is a quick & easy product to Install due to it's lightweight and durable nature. This uPVC gutter clip is designed to hold the 112mm Roundstyle gutter in place. It...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect 90' Gutter Angle Black 130 x 130 x 105mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect 90' Gutter Angle Black 130 x 130 x 105mm is a quick & easy product to Install due to it's lightweight and durable nature. Designed to allow the continuation of the 115mm Deepstyle gutter system at 90°...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect External Stopend Anthracite Grey 40 x 135 x 105mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect External Stopend Anthracite Grey 40 x 135 x 105mm is a quick & easy product to Install due to it's lightweight and durable nature. This fits to the end of the 115mm Deepstyle gutter run, on the outside,...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect External Stopend Black 40 x 135 x 105mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect External Stopend Black 40 x 135 x 105mm is a quick & easy product to Install due to it's lightweight and durable nature. This fits to the end of the 115mm Deepstyle gutter run, on the outside, to prevent...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Fascia Bracket Anthracite Grey 50 x 130 x 99mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Fascia Bracket Anthracite Grey 50 x 130 x 99mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to hold the 115mm Deepstyle gutter in place. It features an integral...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Fascia Bracket Black 50 x 130 x 99mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Fascia Bracket Black 50 x 130 x 99mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to hold the 115mm Deepstyle gutter in place. It features an integral flexible...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Gutter Anthracite Grey 4000 x 115 x 75mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Gutter Anthracite Grey 4000 x 115 x 75mm is a quick & easy product to Install due to it's lightweight and durable nature. A semi elliptical system offering higher drainage capacity for larger roofs. All...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Gutter Black 4000 x 115 x 75mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Gutter Black 4000 x 115 x 75mm is a quick & easy product to Install due to it's lightweight and durable nature. A semi elliptical system offering higher drainage capacity for larger roofs. All Brett...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Internal Stopend Anthracite Grey 34 x 135 x 105mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Internal Stopend Anthracite Grey 34 x 135 x 105mm is a quick & easy product to Install due to it's lightweight and durable nature. This fits to the end of the 115mm Deepstyle gutter run, on the inside,...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Internal Stopend Black 34 x 135 x 105mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Internal Stopend Black 34 x 135 x 105mm is a quick & easy product to Install due to it's lightweight and durable nature. This fits to the end of the 115mm Deepstyle gutter run, on the inside, to prevent...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Running Outlet Anthracite Grey 205 x 135 x 116mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Running Outlet Anthracite Grey 205 x 135 x 116mm is a quick & easy product to Install due to it's lightweight and durable nature. This allows rainwater to leave the gutter and flow into the downpipe. It...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Running Outlet Black 205 x 135 x 116mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Running Outlet Black 205 x 135 x 116mm is a quick & easy product to Install due to it's lightweight and durable nature. This allows rainwater to leave the gutter and flow into the downpipe. It features...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Union Bracket Anthracite Grey 84 x 135 x 100mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Union Bracket Anthracite Grey 84 x 135 x 100mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to join two lengths of 115mm Deepstyle gutter. It features integral...
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    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Union Bracket Black 84 x 135 x 100mm

    Cascade Rainwater 115mm Deepstyle Cast Iron Effect Union Bracket Black 84 x 135 x 100mm is a quick & easy product to Install due to it's lightweight and durable nature. Used to join two lengths of 115mm Deepstyle gutter. It features integral seals to...
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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...

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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