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Round

Round Downpipes in Cast Aluminium

Round cast aluminium downpipes are the most popular choice for aluminium rainwater drainage systems due to their compatibility with half-round and beaded half-round gutter profiles. These aluminium gutters are well-suited for traditional-style buildings, offering a classic appearance while providing modern durability. 

Available in a comprehensive range of downpipe diameters (2.5, 3 & 4”)/sizes and lengths (1, 2 & 3m), these cast aluminium downpipes are long-lasting, aesthetically pleasing,  and available in 27 colours in a matt finish in 10 days and 5 textured finish colours in 15 to meet the needs of various build projects and architectural styles.


Cast Aluminium Downpipes Colours

Manufactured by Alumasc in a range of BBA-approved powder coated finishes:

Textured black available in 24 hours
5 other textured colours available in 15 days
26 standard mat RAL colours, including anthracite grey, available in 10 days
For Plain Mill Finish (i.e. uncoated), please call us to discuss.

Choose from the 27 standard RAL colours (including the textured finish options) here, then place your order online, and we will call you to confirm the matt colour required.

These cast aluminium downpipes are manufactured to meet the highest specifications, ensuring they integrate into the rest of the traditional aluminium rainwater system components we offer. Most orders are fulfilled with next day delivery days, making it easy to complete your project without issues or delay.


Discover More About our Complete Range

Our round-cast aluminium downpipes are crafted to meet the needs of both modern and traditional-style buildings. Made from high-quality aluminium, these aluminium downpipes are an essential addition to your traditional, or traditional ‘style,’ property, providing both durability and unmistakable heritage characterful aesthetic appeal. Their classic design ensures they contribute style and effective protection to any architectural style, while their robust fabrication guarantees a long-lasting solution for your rainwater management requirements

Take a look at our customers' image gallery

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  1. 63mm (2.5
    63mm (2.5") Cast Aluminium 112 Degree Branch without Ears - Textured Graphite Grey RAL 7024
    Was £39.64 Sale Price £39.64
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    Estimated Delivery date is 17/07/2025
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  2. 63mm (2.5
    63mm (2.5") Cast Aluminium 150mm Offset without Ears - Textured Graphite Grey RAL 7024
    Was £61.72 Sale Price £61.72
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    Estimated Delivery date is 17/07/2025
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  3. 63mm (2.5
    63mm (2.5") Cast Aluminium Downpipe 400mm (max) Adjustable Offset - Textured Graphite Grey RAL 7024
    Was £65.00 Sale Price £65.00
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    Estimated Delivery date is 17/07/2025
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  4. 63mm (2.5
    63mm (2.5") Cast Aluminium Downpipe 700mm (max) Adjustable Offset - Textured Graphite Grey RAL 7024
    Was £73.37 Sale Price £73.37
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    Estimated Delivery date is 17/07/2025
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  5. 63mm (2.5
    63mm (2.5") Cast Aluminium Downpipe 900mm (max) Adjustable Offset - Textured Graphite Grey RAL 7024
    Was £85.54 Sale Price £85.54
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    Estimated Delivery date is 17/07/2025
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  6. 200mm Cast Aluminium Flat Back Hopper Head -63mm (2.5
    200mm Cast Aluminium Flat Back Hopper Head -63mm (2.5") Outlet - Textured Graphite Grey RAL 7024
    Was £43.94 Sale Price £43.94
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    Estimated Delivery date is 17/07/2025
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  7. 250mm Cast Aluminium Rectangular Hopper Head 63mm (2.5
    250mm Cast Aluminium Rectangular Hopper Head 63mm (2.5") Outlet - Textured Graphite Grey RAL 7024
    Was £64.84 Sale Price £64.84
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    Estimated Delivery date is 17/07/2025
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  8. 63mm (2.5
    63mm (2.5") Cast Aluminium Eared Socket - Textured Graphite Grey RAL 7024
    Was £21.64 Sale Price £21.64
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    Estimated Delivery date is 17/07/2025
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  9. 63mm (2.5
    63mm (2.5") x 2m Aluminium Downpipe with Cast Eared Socket - One of 26 Standard Matt RAL colours TBC
    Was £97.37 Sale Price £97.37
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    Estimated Delivery date is 17/07/2025
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  10. 63mm  (2.5
    63mm (2.5") x 3m Aluminium Downpipe with Cast Eared Socket - One of 26 Standard Matt RAL colours TBC
    Was £128.14 Sale Price £128.14
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    Estimated Delivery date is 17/07/2025
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  11. 63mm (2.5
    63mm (2.5") Aluminium Downpipe Clip - One of 26 Standard Matt RAL colours TBC
    Was £12.36 Sale Price £12.36
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    Estimated Delivery date is 17/07/2025
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  12. 63mm (2.5
    63mm (2.5") Cast Aluminium Shoe with Ears - One of 26 Standard Matt RAL colours TBC
    Was £28.43 Sale Price £28.43
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    Estimated Delivery date is 17/07/2025
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  13. 63mm (2.5
    63mm (2.5") Cast Aluminium Non-Eared Shoe - One of 26 Standard Matt RAL colours TBC
    Was £31.68 Sale Price £31.68
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    Estimated Delivery date is 17/07/2025
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  14. 63mm (2.5
    63mm (2.5") Cast Aluminium 112 Degree Bend without Ears - One of 26 Standard Matt RAL colours TBC
    Was £30.35 Sale Price £30.35
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    Estimated Delivery date is 17/07/2025
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  15. 63mm (2.5
    63mm (2.5") Cast Aluminium 135 Degree Bend without Ears - One of 26 Standard Matt RAL colours TBC
    Was £30.36 Sale Price £30.36
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    Estimated Delivery date is 17/07/2025
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  16. 63mm (2.5
    63mm (2.5") Cast Aluminium 90 Degree Bend without Ears - One of 26 Standard Matt RAL colours TBC
    Was £30.35 Sale Price £30.35
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    Estimated Delivery date is 17/07/2025
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  17. 63mm (2.5
    63mm (2.5") Cast Aluminium 112 Degree Branch without Ears - One of 26 Standard Matt RAL colours TBC
    Was £39.64 Sale Price £39.64
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    Estimated Delivery date is 17/07/2025
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  18. 63mm (2.5
    63mm (2.5") Cast Aluminium 150mm Offset without Ears - One of 26 Standard Matt RAL colours TBC
    Was £61.72 Sale Price £61.72
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    Estimated Delivery date is 17/07/2025
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  19. 63mm (2.5
    63mm (2.5") Cast Aluminium Downpipe 400mm (max) Adjustable Offset - One of 26 Standard Matt RAL colours TBC
    Was £65.00 Sale Price £65.00
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    Estimated Delivery date is 17/07/2025
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  20. 63mm (2.5
    63mm (2.5") Cast Aluminium Downpipe 700mm (max) Adjustable Offset - One of 26 Standard Matt RAL colours TBC
    Was £73.37 Sale Price £73.37
    You Save 0%
    Estimated Delivery date is 17/07/2025
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  21. 63mm (2.5
    63mm (2.5") Cast Aluminium Downpipe 900mm (max) Adjustable Offset - One of 26 Standard Matt RAL colours TBC
    Was £85.54 Sale Price £85.54
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    Estimated Delivery date is 17/07/2025
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  22. 200mm Cast Aluminium Flat Back Hopper Head -63mm (2.5
    200mm Cast Aluminium Flat Back Hopper Head -63mm (2.5") Outlet - One of 26 Standard Matt RAL colours TBC
    Was £48.99 Sale Price £48.99
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    Estimated Delivery date is 17/07/2025
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  23. 250mm Cast Aluminium Rectangular Hopper Head 63mm (2.5
    250mm Cast Aluminium Rectangular Hopper Head 63mm (2.5") Outlet - One of 26 Standard Matt RAL colours TBC
    Was £64.84 Sale Price £64.84
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    Estimated Delivery date is 17/07/2025
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  24. 63mm (2.5
    63mm (2.5") Cast Aluminium Eared Socket - One of 26 Standard Matt RAL colours TBC
    Was £21.64 Sale Price £21.64
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    Estimated Delivery date is 17/07/2025
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  25. 76mm (3
    76mm (3") x 3m Aluminium Downpipe with Cast Eared Socket - Textured Black
    Was £149.34 Sale Price £149.34
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    Estimated Delivery date is 27/06/2025
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  26. 76mm (3
    76mm (3") x 2m Aluminium Downpipe with Cast Eared Socket - Textured Black
    Was £113.46 Sale Price £113.46
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    Estimated Delivery date is 27/06/2025
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  27. 76mm (3
    76mm (3") x 1m Aluminium Downpipe with Cast Eared Socket - Textured Black
    Was £71.48 Sale Price £71.48
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    Estimated Delivery date is 27/06/2025
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  28. 76mm (3
    76mm (3") Aluminium Downpipe Fixing Clip - Textured Black
    Was £14.28 Sale Price £14.28
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    Estimated Delivery date is 27/06/2025
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  29. 76mm (3
    76mm (3") Cast Aluminium Downpipe Shoe with Ears - Textured Black
    Was £39.13 Sale Price £39.13
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    Estimated Delivery date is 27/06/2025
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  30. 76mm (3
    76mm (3") Cast Aluminium Downpipe Non-Eared Shoe - Textured Black
    Was £39.05 Sale Price £39.05
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    Estimated Delivery date is 27/06/2025
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