Round Aluminium Rainwater Pipe

We offer a comprehensive range of aluminium round downpipes in various sizes. These modern round downpipes offer smooth clean lines with a very neat flush joint, whether using the standard external swaged collar or optional internal spigot.

We offer five standard sizes of round downpipes:

  • 63mm / 2.5"
  • 75mm / 3"
  • 100mm / 4"
  • 125mm / 5"
  • 150mm  / 6"

We may be able to manufacture alternative sizes of downpipe, please contact our technical or sales team for more information.


We produce a range of complementary aluminium round downpipe fittings including bends, branches, swan necks, offset bends, plinth offsets, and rainwater diverters which are all available in either standard sizes or special custom made sizes to suit individual projects.

We also have a range of hopper heads that look great with our range of aluminium round downpipes.


We offer a range of round downpipe brackets to suit individual projects and these include standard 35mm stand-off pipe clips, semi-concealed brackets, flush to wall or with a stand-off, telescopic down pipe brackets which are idea for stepped walls, vertical T brackets for fixing to window mullions, corner, cast decorative or special design downpipe brackets.

Coatings & Finishes

All our aluminium rainwater pipes, downpipes and fittings are available polyester powder coated in a wide array of colours and finishes including the full range of RAL colours, BS colours, Heritage textured finishes, metallic finishes, and anodised coating.

We can also source special colours and finishes to match your project requirements or we can supply our aluminium gutters in the standard mill finish.

For more details please take a look at our colour chart (PDF).

Benefits of Aluminium Round Downpipes 

Our aluminium round downpipes offer many benefits as they are easy to install, low maintenance, and lightweight yet very robust. Our aluminium downpipes provide a sustainable rainwater system as 90% of the aluminium we use is recycled.

Our aluminium round downpipes are suitable for use with a range of our other products including gutters, hopper heads and decorative feature brackets.

Please Note: Due to our ongoing product development policy, we reserve the right to alter specifications without prior notice.

Click here to use Estimator ↓

Guttercrest have created an easy to use programme called Estimator which is designed to help you quickly specify and cost the aluminium gutters, downpipes and accessories you need for your building project.


Sizes stated below are the Diameter of the Downpipe

63mm - Product Code: RW1

75mm - Product Code: RW2

100mm - Product Code: RW3

125mm - Product Code: RW4

150mm - Product Code: RW5


Case Studies

Gallery Click Images to Enlarge