Harmer Roof Cast Iron Outlets

Harmer Cast Iron Roof outlets provide a practical solution to many building drainage applications. Inherently strong, cast iron is an ideal choice for load-bearing applications.
  • The medium sump range is a compact outlet body in vertical and horizontal varia-tions 
  • The large sump range provides a deeper sump for 100 and 150mm vertical pipe 
  • Two way outlet is suitable for use in a parapet wall construction 
  • Provide flat roof drainage for warm, cold and inverted roofs
  • For flat roof structures with insitu cast concrete, timber or lightweight metal deck construction
  • Ideal for use with copper and lead clad roofs where the risk of bi-metallic corro-sion is high 
  • Load bearing applications where rainwater outlets are exsposed to vehicular traffic and ideal for connection to continuous water
  • The Harner cast iron range is cast to BS EN 1561 and are suitable for most types of flat roof drainage
  • Designated load rating up to 12.5 tonnes
  • Medium and large sump outlet bodies are available with varying flow rate capacity
  • Cast iron has a proven track record for its longevity over the lifetime of the building
  • Cast Iron is 100% recyclable
Materials & Finishes
  • The crystallised nature of cast iron gives the material very high strength and robustness
  • Once installed cast iron components resist impact damage even in exposed areas
  • All Harmer cast iron clamps & grates have a sherardizing zinc coating which provides an extremely hard wearing anti corrosive finish
  • Domical grates are made from UK-stable poly-propylene to give long life service
  • Two way outlet rectangular grate available in sherardized cast iron, nickel bronze or mill finish aluminium. Aluminium grates can be polyester powder coated upon request
  • The outlet flanges only have a primer coating so the contractor/installer should protect or coat it during installation

If you have ANY questions about our products, or want to give us some feedback about your shopping experience with us, please feel free to contact us on 0330  2231731 or email:

Read more Read less

Filter by
Outlet Size
more... less
Ground Type
View items:
Items 1-16 of 35 item(s)