Dallmer has introduced its high capacity ‘Red’ Roof Drain, which is intended to provide overflow when the main outlets are being overwhelmed. Crucially, the versatile design can be connected to chutes or to pipework in gravity or siphonic systems. This clears excess storm-water quickly before it can find vulnerable joints (typically where the waterproofing meets upstands) or exert excess structural loads. ‘Red’ Drain variants can be installed as part of a new roof or retrofitted into an existing one and are adjustable to suit different insulation thicknesses and waterproofing systems. The latter include Bitumen felt, single ply PVC, TPO, EPDM as well as liquid applied membranes.
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