Harmer Roof AV® Aluminium

Harmer Roof AV Vertical rainwater outlets are designed for use with flat roof structures, using either insitu cast concrete, timber or lightweight metal deck construction.

Harmer Roof Outlets are ideal for connection to continuous waterproofing systems using single ply membranes, mastic asphalt, high performance built-up felt and liquid applied systems.

• 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 connection to continuous waterproofing systems (single layer, built up felt, mastic asphalt or single ply)
• Designed to connect to individual downpipes
• Not be used in managed rainwater systems
• Screw outlets recommended where connection to outlet occurs within thickness of concrete slab, where a completely gas-tight seal is required
• AV® Retro-Gulley outlets available for flat roof refurbishment (removal of old rainwater outlet not necessary)
• AV® Multi-Gulley outlets available for variable angle discharge
• Compatible with Harmer SML lightweight cast iron systems and all other types of pipework

• Lightweight, durable and non-corrodible
• AV® outlets drain up to 40% more roof area than conventional gravity outlets
• High flow performance with increasing head of water at the outlet
• Life expectancy of aluminium: 40 years (rural/suburban areas); up to 25 years (industrial/marine areas)
• Aluminium is 100% recyclable

• Precision cast in aluminium silicon alloy LM6 to BSEN 1559:1997
• Outlet body (fully concealed after installation) is in mill finish aluminium
• Gunmetal specification available for connection to copper pipework and for installation in copper or lead-clad roofs
• Grate is polyester powder coated in blue; clamping collar is coated in yellow
• Domical grates supplied as standard; flat grates are available

• Easy to handle and fix
• Minimal maintenance requirements