Use our rainwater drainage calculator to calculate your property's flow requirements or ‘flow capacity’ of the gutters you're considering purchasing.
Cast Aluminium Downpipes
Cast aluminium downpipes are an excellent, low-maintenance choice for traditional properties and for modern homes seeking a heritage-inspired look. Available in round, square, and rectangular profiles, they combine a classic appearance with the strength, low maintenance, and long lifespan of modern aluminium. Our range includes multiple sizes in a traditional black finish or a selection of matt RAL colours, along with the guttering, fittings and fixings needed to complete your drainage system.
Discover Our Comprehensive Range
A comprehensive range of cast aluminium downpipes and fittings is available, catering to various architectural needs. The extensive range of downpipes and fittings is ideal for traditionally designed buildings blending well with those architectural styles.
To ensure you find the right fit for you project, we offer cast aluminium downpipes in the following profiles and sizes:
- Round Downpipes in 63mm (2 1/2"), 76mm (3") and 100mm (4")
- Square and Rectangular Downpipes in 75 x 75mm (3" x3") and 100 x 75mm (4" x 3")
Our Cast Aluminium downpipes are available in a selection of BBA-approved powder coated finishes with varying leadtimes:
- Textured black with next day delivery
- Five other textured finishes with a 15 day leadtime (Anthracite Grey RAL 7016, Graphite RAL 7024, Basalt RAL 7012, Dusty Grey RAL 7037, White RAL 9016)
- One of 26 standard matt RAL colours with a 15 day lead time
- For Plain Mill Finish, call us on 0800 644 44 26.
Why Choose Cast Aluminium Downpipes from Rainclear?
Manufactured by Alumasc, a leading UK manufacturer of metal rainwater systems, our cast aluminium downpipes are highly durable and have a life expectancy of 40 years in rural and suburban areas, and 25 years in industrial and marine areas. This longevity outperforms plastic uPVC alternatives.
Not only do they perform longer than alternative materials, cast aluminium is a cost effective choice for residential, commercial and specialist heritage projects. They are easy to handle and install as well as non-corrodible.
When you purchase your cast aluminium guttering and downpipes with Rainclear, you can benefit from knowledgeable support and assistance from our team as well as bespoke quotes tailored to your projects requirements. On our Resources site, you can also find installation and technical information for our products.
Useful Information
- View our pricelist
- Read our Cast Alu vs Cast Iron comparisons
- What do we mean by ‘heritage textured finish'?
Take a look at the customer image gallery for inspiration
CAST ALUMINIUM
A comprehensive range of aluminium cast eared downpipe & fittings. Textured black available in 24 hours with 7 other standard colours available in 10 working days.