Harmer offers a wide range of roof drainage products suited to different types of roof construction including structural concrete, metal deck, timber deck, warm roof, cold roof, green roof and inverted roof. A secure connection between the waterproofing membrane and rainwater outlet is critical. Harmer Roof outlets can be used with all types of membrane including asphalt, built-up felt, single ply and wet-applied systems

Harmer detail outlets are designed for use with flat roof structures using either insitu cast concrete, timber and lightweight metal deck construction. Harmer Roof outlets are ideal for connection to continuous waterproofing systems using single ply membranes, mastic asphalt or high performance built-up felt.

Prefabricated extended spigots range, available with either standard spigot or with Flushjoint extruded aluminium downpipes spigots. Aluminium alloy is lightweight, therefore easy to handle on site and during installation. This lightness also makes aluminium outlets suitable for a wide range of lightweight roof decks.

Features and Performance:

• Lightweight, durable and non-corrodible
• Life expectancy of aluminium: 40 years (rural/suburban areas); up to 25 years (industrial/marine areas)
• High flow performance
• Robust and secure
• Low maintenance
• Aluminium is 100% recyclable
• Sustainable
• Designed to solve problematic detailing requirements