Polypipe Building Products offers the highest-quality rainwater systems available on the market – with a vast range of adaptors ensuring these innovative solutions connect to nearly all types of existing installations.

As the UK experiences heavier, wetter downpours with increased, high-intensity rainfall, properties need better drainage systems designed for a new climate.

Rainwater accumulation causes a myriad of problems for older and new builds alike – guaranteeing rainwater runoff to prevent flood damage, blockages and warping.

Half Round Rainwater System 112mm & Round Downpipe 68mm - PVCu

PVCu Half Round Rainwater System in 112mm with 68mm downpipe. Available in Black, White & Grey, with adaptors for easy connection to traditional materials.
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Half Round Rainwater System 150mm - PVCu

150mm PVCu Half Round Rainwater System in Black, White & Grey, with adaptors for connecting to traditional materials. Ideal for high‑capacity roof drainage.
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Polyflow Deep Capacity gutter 117mm x 75mm - PVCu

Polyflow 117mm x 75mm deep capacity PVCu gutter drains roof areas up to 240m². Available in Black, White, Grey & Anthracite for durable, high‑flow rainwater management.
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Square Rainwater System 112mm & Square Downpipe 65mm - PVCu

112mm Square PVCu gutter with 65mm downpipe. Available in Black & White, with adaptors for easy connection to traditional materials. Strong, modern rainwater performance.
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Ogee Extra Capacity Gutter 130mm x 70mm - PVCu

130mm x 70mm Ogee PVCu gutter with deep, high‑capacity profile for larger roofs and heavy rainfall. Available in Black and White, offering durable, traditional‑style drainage performance.
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Elegance Cast Iron Effect - Downpipe Systems

Cast iron effect downpipe systems in Notched Ogee, 112mm Half Round, Polyflow Deep Capacity & 68mm Round. Durable PVCu with a 10‑year colour fastness guarantee.
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Elegance Cast Iron Effect - Half Round 114mm x 51mm

114mm x 51mm Half Round cast iron effect guttering offering traditional styling with durable, low‑maintenance PVCu and a 10‑year colour fastness guarantee.
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Elegance Cast Iron Effect - Polyflow 117mm x 75mm

Polyflow 117mm x 75mm cast iron effect guttering with deep‑capacity performance. Durable PVCu finish with authentic styling and a 10‑year colour fastness guarantee.
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A smart way to improve your above ground drainage  

Weather conditions and rainfall may be beyond your control – but if you have the right systems in place, you can protect the integrity and structure of any project, regardless of scale or style. Polypipe Building Products’ rainwater systems are all:


•    Simple to install
•    Compatible with almost any type of property or project
•    Durable and hard-wearing 
•    Built with the highest quality materials
•    Created with innovative designs to minimise damage