Rectangular Cast Iron Downpipes

Rectangular cast iron downpipes create a much sharper, more architectural appearance than standard round cast iron rainwater pipes. You often see them in cities like London and Manchester on old properties. 

The clean vertical lines suit buildings with stronger detailing across the façade, which is why rectangular cast iron downpipes are so often specified alongside Moulded Ogee cast iron guttering on heritage and restoration projects.

While round cast iron downpipes remain the more common choice across traditional properties, rectangular profiles bring a more formal appearance to the rainwater system and work especially well on larger period buildings, churches, townhouses, and architectural developments where detail matters. If you're unsure, you can always email us with an image of your property and we'll help you decide. 

At Cast Iron Warehouse, we specialise in supplying genuine Alumasc Apex Heritage rectangular cast iron downpipes alongside matching Moulded Ogee guttering, rectangular hopper heads, bends, offsets, shoes, brackets, and fittings for complete heritage rainwater systems. Widely specified by architects across conservation and restoration projects throughout the UK, the Alumasc Apex range combines authentic sand cast manufacture with the consistency and reliability expected on modern construction work.

The socketed cast iron pipe design creates a far more authentic finish than imitation cast iron effect systems, particularly on traditional elevations where rainwater goods form part of the building’s architecture rather than simply serving a practical function.