Description
Full Dimensions Guide Available Here
The Alumasc Heritage Square/Rectangular Aluminium Downpipe range is the ideal solution for period-style and heritage buildings that require a traditional architectural finish with the performance of modern materials.
Designed to replicate the classic aesthetic of cast iron downpipes, this system is widely specified for churches, listed buildings, and conservation projects, while also being perfectly suited to modern fast-track contracts.
Manufactured in the UK from high-quality, recyclable extruded aluminium, these downpipes are lightweight, corrosion-resistant, and easy to install using welded-on eared sockets for secure wall fixing.
✅ Official retailer of Alumasc aluminium products
✅ Available in 1m, 2m, and 3m lengths with full range of fittings
✅ 26 Standard BBA-approved powder-coated colours
✅ Custom RAL/BS shades and mill finish available
✅ Delivery in 7–10 working days from point of order
Authentic Heritage Style, Engineered for Longevity
Alumasc’s square aluminium downpipes are part of the Heritage range, designed with socketed joints and traditional styling details that complement period architecture.
The loose cast sockets make fitting fast and straightforward, delivering a clean, authentic finish that aligns with both restoration and new-build projects.
They are particularly popular in:
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⛪ Churches and chapels
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🏛 Period townhouses and estates
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🏡 Heritage-style new builds
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🏢 Public buildings and refurbishments
Key Features & Benefits
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Traditional rectangular profile ideal for flush or projecting eaves
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Factory-applied BBA-approved polyester powder coatings
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26 standard colour finishes, with additional BS or RAL colours available to order
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Plain mill finish option for on-site painting
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Socketed system with eared fixings for secure, easy installation
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Compatible with Alumasc Heritage cast aluminium guttering and hoppers
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Low maintenance and long-lasting – up to 40 years in rural areas and 25 in marine/industrial environments
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Fully recyclable aluminium – sustainable and environmentally responsible
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Compliant with BS 8539 (formerly BS 2997)
Fast & Simple Installation
Thanks to its lightweight structure, these aluminium downpipes are far easier to handle than cast iron alternatives.
The socketed system with eared lugs allows for quick fixing to masonry using standard brackets and jointing kits.
Need accessories? We supply:
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Brackets and clips
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Gaskets, bolts, washers
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Sealants and touch-up paint
FAQs:
Q: Are these downpipes suitable for listed or heritage buildings?
Yes – the Alumasc Heritage range has been designed specifically to replicate cast iron detailing and is widely accepted for use in conservation areas and on listed buildings.
Q: What sizes and lengths are available?
Square aluminium downpipes are available in two standard sizes and in 1m, 2m, and 3m lengths for flexible installation.
Q: Can I order in custom colours?
Yes – choose from 26 standard powder-coated colours, or request a bespoke BS or RAL shade for a perfect match to your property’s exterior.
Q: How long will these downpipes last?
Expect up to 40 years of life in rural and suburban areas and 25 years in coastal or industrial environments, with minimal maintenance.
Q: Can these be used as a direct replacement for cast iron?
Absolutely – they offer the same visual appeal, with the added benefits of lighter weight, easier installation, and rust resistance.
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Product Dimensions
Some of Our Service Reviews
This company deserves more than 5 stars
This company deserves more than 5 stars! Brilliant help & communication by the staff there. My purchase was delivered the next day. can't fault them at all. Thank you
Date of experience: 21 February 2024
Made up with the cladding and…
Made up with the cladding and corrugated roof sheets
Delivered early which was a bonus
All the sheets were not damaged
And l must say cheapest around
Spot on
Will defo use again
Date of experience: 17 October 2023
Cladding
Very pleased with my grey composite cladding. Staff helpful, free samples received, confirming a good product at a fair price, leading to my purchase.
Date of experience: 11 June 2023
Help with my new garage roof!
Trade Warehouse could not have been more helpful. They very patiently guided a roofing newbie through all of the stuff I would need to do the job and provided helpful tips along the way. It's rare to find a company offering such a fantastic level of customer service as standard. I would highly recommend them and will certainly use them again.
Date of experience: 23 August 2023
Garden Storage
My contractor (Charlie Keep) recommended you to me so I could order the materials online for delivery direct to my home. These were for a project to construct a Garden Storage Area. The materials were perfect and the whole process was simple and slick with materials delivered on time and very well packaged. Charlie has since completed the project & I am very happy with the outcome.
Date of experience: 20 August 2023
Right product, right price, right delivery.
Right product, right price, right delivery. Sure, it was only one length of cast iron guttering but they took the order seriously, packed it well and kept me updated on delivery. And when I opened the very good packaging I found it was exactly what I had wanted. How can you do better!!
Date of experience: 31 January 2023
Fast
Fast , efficient service
Date of experience: 12 September 2023
It was exactly what I wanted
It was exactly what I wanted. Arrived in good order
Perfect
Date of experience: 16 September 2023
Straight forward and helpful with…
Straight forward and helpful with making the order. Delivery guy was friendly and was helpful in bringing the sheets into the back yard (was only a few). Really happy and would highly recommend!!!
Date of experience: 27 August 2023
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