Premium Products:

A constantly evolving range of quality, world class products and systems, fully accredited to UK, European and North American Standards.


Alumasc’s UK casting and fabrication facilities employ both traditional and cutting edge production methods. Alumasc aluminium rainwater goods are manufactured and independently assessed at the company’s Burton Latimer site under the ISO 14001:2004 Environmental Management Standard. This not only ensures that upstream production processes have been monitored for their environmental impact, but that due consideration is taken for all aspects of packaging, transport and disposal, in order to deliver as sustainable a rainwater product as practicable. Cast Iron and steel rainwater goods are manufactured in dedicated factories abroad.


Alumasc rainwater solutions are designed to give optimum performance over their lifespan. In every aspect of material choice or detailing decision the aim is to produce premium, fit for purpose products and systems. This ethos has resulted in Alumasc being associated with innovative projects that have led the way in construction performance, stood the test of time and demonstrated good design.


Alumasc off a variety of aluminium finishes to the specifier. Whether you are seeking to replicate a period cast iron or contemporary appearance, Alumasc has the solution. Traditional cast aluminium gutter profiles and complementary downpipes can be finished to replicate cast iron to special order – ideal for period refurbishment or where a traditional design is required.

Alumasc’s contemporary aluminium rainwater ranges include dry joint extruded and wet joint folded gutter profiles, which can be used in combination with various downpipes to fulfil different functional requirements (eg, high security) and for different visual effects to suit the building context. Products can be supplied in a plain mill finish or in Alumasc Raincote range of polyester powder coated finishes.

Alumasc’s sand cast iron rainwater range combines the best of traditional qualities with modern technology to suit today’s construction needs, Innovations include pre-finishing and advanced jointing techniques. Comprehensive components from stock can also be complemented by a made-to-order service.

Alumasc’s steel rainwater system offers a contemporary, eco-friendly and cost effective alternative to uPVC gutters and downpipes.

Technical Support:

Comprehensive data for specification and use of all products and systems is available on the website. Our technical experts can help you with:

  • Take off service from architectural drawings
  • CAD drawings (upon an order)
  • Full technical and aftersales support
  • Proactive support on a project by project basis, led by specialist Area Managers


All Alumasc products come with a company back assurance as to their quality, life expectancy and suitability for purpose ensuring specifiers and end users long-term peace of mind.