Harmer AV Roof Outlets
Applications, Materials & Installation Harmer AV outlets provide flat roof drainage for warm, cold and inverted roofs and are ideal for connection to all waterproofing systems. They can be used on flat roof structures with insitu cast concrete, timber or lightweight metal deck AV outlets are available with a choice of spigot or screw connection and are designed to connect to individual downpipes. Screw outlets are recommended where connection to the outlet occurs within the thickness of the concrete slab, where a completely gas-tight seal is required. They are not to be used in managed (i.e. siphonic) rainwater systems Materials & Finishes Harmer AV outlets are precision cast in aluminium silicon alloy LM6 to BSEN 1559:1997. Aluminium is 100% recyclable The life expectancy of aluminium is 40 years in rural/suburban areas and up to 25 years in industrial/marine areas The Harmer AV outlet body (fully concealed after installation) is supplied in mill finish aluminium. They are also available in a gunmetal specification to connect to copper pipework and for copper or lead-clad roofs The AV outlet grate is polyester powder coated in blue; clamping collar is coated in yellow. Domical grates are supplied as standard; flat grates are available Installation & Maintenance Harmer AV flat roof outlets are easy to handle and fix and require minimal routine maintenance An AV Retro-Gulley outlet is available for flat roof refurbishment - See more at: http://www.alumascroofing.co.uk/products/roof-accessories/flat-roof-outlets/harmer-av-roof-outlets/#sthash.EGcage5Q.dpuf