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Square Cast Aluminium Downpipe

Square cast aluminium downpipes combine traditional aesthetics with the performance benefits of aluminium, providing a reliable and low-maintenance alternative to cast iron. Designed to complement a wide range of rooflines, these downpipes are particularly suited to heritage restorations, conservation projects, and high-quality new builds where architectural style is a key consideration.

Part of the Alumasc Heritage range, this classic socketed aluminium square downpipe system can be finished to replicate traditional cast iron or coated with BBA-certified powder coatings in a variety of colours. The result is a durable, corrosion-resistant downpipe system that retains a period-appropriate appearance while providing long-term performance.

Available in diameters from 63mm to 150mm, these square aluminium downpipes accommodate a range of rainwater capacities. Supplied in 1m, 2m, and 3m lengths, they offer flexibility for properties of all sizes and roof heights, enabling a seamless installation tailored to your project’s requirements.

Ideal Applications

Square cast aluminium downpipes are versatile and suitable for a variety of property types, including:

Listed and conservation properties

Period restorations and heritage buildings

High-end residential and commercial projects

Properties requiring durable, low-maintenance rainwater systems

Their traditional square profile adds a distinctive architectural detail, making them a popular choice for both heritage and modern developments.

Why Choose Square Cast Aluminium Downpipes?

Authentic Cast Iron Appearance – Perfect for heritage and listed properties.

Durable & Lightweight – Easier to handle and install compared to traditional cast iron.

Corrosion-Resistant Aluminium – Long-lasting performance with minimal maintenance.

Customisable Finishes – Choose from powder-coated colours or cast iron effect.

Low Maintenance – Retains appearance and functionality for decades.

Order Your Square Cast Aluminium Downpipes

Enhance your rainwater management system with square cast aluminium downpipes from the Alumasc Heritage range. Combining traditional charm with modern durability, these downpipes are ideal for both restoration and new-build projects.

Browse our full range online or contact the Gutter Centre team for expert guidance, bespoke colour options, and technical support for your project.

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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Downpipe Eared x 3m

Alumasc Heritage Square Cast Aluminium Socketed Downpipe Eared x 3m

Heritage Square Cast Aluminium Socketed Downpipe with Ears x 3m Length are available in 2 sizes and 3 downpipe lengths, together with a complete range of fittings
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£131.08 Regular price £141.71
  • -7.5%
Ex VAT£157.30 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Downpipe Eared 1m & 2m

Alumasc Heritage Square Cast Aluminium Socketed Downpipe Eared 1m & 2m

Heritage Square Cast Aluminium Socketed Downpipe with Ears 1m & 2m are available in 2 sizes and 3 downpipe lengths, together with a complete range of fittings
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£56.78 Regular price £61.38
  • -7.5%
Ex VAT£68.13 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Downpipe Without Ears x 3m

Alumasc Heritage Square Cast Aluminium Socketed Downpipe Without Ears x 3m

Heritage Square Cast Aluminium Socketed Downpipe x 3m Length Without Ears available in 2 sizes and 3 downpipe lengths, together with a complete range of fittings
From
£131.08 Regular price £141.71
  • -7.5%
Ex VAT£157.30 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Downpipe Without Ears 1m & 2m

Alumasc Heritage Square Cast Aluminium Socketed Downpipe Without Ears 1m & 2m

Heritage Square Cast Aluminium Socketed Downpipe Without Ears 1m & 2m available in 2 sizes and 3 downpipe lengths, together with a complete range of fittings
From
£56.78 Regular price £61.38
  • -7.5%
Ex VAT£68.13 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Square Socket With Ears

Alumasc Heritage Square Cast Aluminium Square Socket With Ears

Heritage Square Cast Aluminium Square Socket With Ears available in 2 sizes, together with a complete range of fittings
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£20.69 Regular price £22.37
  • -7.5%
Ex VAT£24.83 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Shoe Front With Ears

Alumasc Heritage Square Cast Aluminium Socketed Shoe Front With Ears

Heritage Square Cast Aluminium Socketed Shoe Front With Ears available in 2 sizes, together with a complete range of fittings
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£51.01 Regular price £55.15
  • -7.5%
Ex VAT£61.22 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Pipe Clip Standard

Alumasc Heritage Square Cast Aluminium Pipe Clip Standard

Heritage Square Cast Aluminium Pipe Clip Standard available in 2 sizes, together with a complete range of fittings
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£6.86 Regular price £7.42
  • -7.5%
Ex VAT£8.24 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Pipe Clip With Small Base

Alumasc Heritage Square Cast Aluminium Pipe Clip With Small Base

Heritage Square Cast Aluminium Pipe Clip With Small Base available in 2 sizes, together with a complete range of fittings
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£9.08 Regular price £9.82
  • -7.5%
Ex VAT£10.90 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Pipe Clip With Extension Base

Alumasc Heritage Square Cast Aluminium Pipe Clip With Extension Base

Heritage Square Cast Aluminium Pipe Clip With Extension Base available in 2 sizes, together with a complete range of fittings
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£20.15 Regular price £21.78
  • -7.5%
Ex VAT£24.18 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Access Pipe Without Ears

Alumasc Heritage Square Cast Aluminium Socketed Access Pipe Without Ears

Heritage Square Cast Aluminium Socketed Access Pipe Without Ears available in 2 sizes, together with a complete range of fittings
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£77.99 Regular price £84.31
  • -7.5%
Ex VAT£93.58 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Bend 112.5 F&B Without Ears

Alumasc Heritage Square Cast Aluminium Socketed Bend 112.5 F&B Without Ears

Heritage Square Cast Aluminium Socketed Bend 112.5 Degrees F&B Without Ears available in 2 sizes, together with a complete range of fittings
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£54.89 Regular price £59.34
  • -7.5%
Ex VAT£65.87 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Bend 112.5 L&R Without Ears

Alumasc Heritage Square Cast Aluminium Socketed Bend 112.5 L&R Without Ears

Heritage Square Cast Aluminium Socketed Bend 112.5 Degrees L&R Without Ears available in 2 sizes, together with a complete range of fittings
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£54.89 Regular price £59.34
  • -7.5%
Ex VAT£65.87 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Bend 135 degree F&B Without Ears

Alumasc Heritage Square Cast Aluminium Socketed Bend 135 degree F&B Without Ears

Heritage Square Cast Aluminium Socketed Bend 135 Degrees F&B Without Ears available in 2 sizes, together with a complete range of fittings
From
£54.89 Regular price £59.34
  • -7.5%
Ex VAT£65.87 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square...

Alumasc Heritage Square Cast Aluminium Socketed Bend 135 L&R Without Ears

Heritage Square Cast Aluminium Socketed Bend 135 Degrees L&R Without Ears available in 2 sizes, together with a complete range of fittings
From
£54.89 Regular price £59.34
  • -7.5%
Ex VAT£65.87 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Bend 92.5 F&B Without Ears

Alumasc Heritage Square Cast Aluminium Socketed Bend 92.5 F&B Without Ears

Heritage Square Cast Aluminium Socketed Bend 92.5 Degrees F&B Without Ears available in 2 sizes, together with a complete range of fittings
From
£54.89 Regular price £59.34
  • -7.5%
Ex VAT£65.87 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
Add to Basket Info
Alumasc Heritage Square... Alumasc Heritage Square Cast Aluminium Socketed Bend 92.5 L&R Without Ears

Alumasc Heritage Square Cast Aluminium Socketed Bend 92.5 L&R Without Ears

Heritage Square Cast Aluminium Socketed Bend 92.5 Degrees L&R Without Ears available in 2 sizes, together with a complete range of fittings
From
£54.89 Regular price £59.34
  • -7.5%
Ex VAT£65.87 Inc VAT
Estimated delivery Thursday, 23rd July
Estimated delivery 5 working days
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