Alumasc Water Management Solutions - Harmer Roof Outlets - Cast Iron

Harmer Cast Iron Roof outlets provide a practical solution to many building drainage applications. Inherently strong, cast iron is an ideal choice for loadbearing applications.

Applications

The medium sump range is a compact outlet body in vertical and horizontal variations
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 corrosion is high
Load bearing applications where rainwater outlets are exposed to vehicular traffic
Ideal for connection to continuous waterproofing systems (Single layer, built up felt, mastic asphalt or single ply)
Compatible with Harmer SML lightweight cast lightweight cast iron drainage systems

Performance

The Harmer 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 and grates are surface treated using a sherardizing zinc coating which provides an extremely hard wearing anti corrosive finish
Domical grates are made from UK-stable polypropylene 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

Installation & Fixing