Harmer Modulock Channels are designed to manage surface water efficiently within landscaped and paved environments. Developed to integrate seamlessly with paving support systems and external hard landscaping schemes, the range provides effective linear drainage for podium decks, terraces, balconies and pedestrian areas. Available in a variety of channel widths, depths and grating options, Modulock Channels allow designers to balance hydraulic performance with architectural appearance. Durable, easy to install and compatible with other Harmer drainage solutions, they provide a practical and visually discreet method of controlling surface water.
Harmer Modulock Roof Channel Drains are engineered linear drainage systems designed to provide effective perimeter and threshold drainage for modern roof and deck constructions. Suitable for applications where rainwater runoff and membrane-level percolation need to be intercepted and directed toward drainage outlets, the system helps protect buildings while maintaining safe and accessible external environments.
The range includes straight channel drains manufactured from either stainless steel or galvanised mild steel, available in widths of 130mm, 200mm and 250mm. Channel depths can be specified as either fixed or adjustable, ranging from 55mm to 150mm to suit varying project requirements. In addition to the straight channel range, specialised Facade and Terrace Slot Channel options are available for applications requiring a more discreet drainage appearance.
Designed for use with inverted roofs, warm roofs, green roofs and podium deck constructions, Modulock roof channels efficiently collect rainwater at surface level and relieve water percolation at membrane level. This dual-function approach supports comprehensive roof drainage strategies and helps prevent water accumulation at critical building interfaces.
The system integrates seamlessly with Harmer Rainwater Outlets and Modulock Pedestal Support Systems, providing a coordinated drainage solution for terraces, balconies, walkways and external amenity spaces. Channels may be installed directly onto structural decks or supported on height-adjustable feet, offering considerable flexibility during specification and installation.
Manufactured from durable metals for long-term performance, Modulock channels are available with a choice of six grate designs and either perforated or closed sides. Pedestrian load rated to Class K3, the system supports safe access and is compliant with threshold drainage requirements associated with Part M level access design. Its combination of drainage efficiency, versatility and robust construction makes Modulock Roof Channel Drains an ideal solution for contemporary roof and deck projects.
250 250 GSteel Maintenance Access Units
250 250 GSteel Maintenance Access Units
250 250 GSteel Maintenance Access Units
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