Harmer Uni-Ring is a versatile, economical system for concealed drainage beneath paving slabs, based on shallow injection moulded polyethylene rings.
Applications, Materials & Installation
- Harmer Uni-Ring is ideal for use on terraces, walkways and balconies and is especially suited for inverted roof constructions where ballasted insulation is laid onto flat roof waterproofing
- Harmer Uni-Ring is positioned to support adjoining slabs at each corner, whilst maintaining open joints for fast, efficient drainage and comprises stackable units with spacers for open joint drainage when required
- Spacers are collapsible for closed jointing and edge detailing
- Shims are available for fine height adjustment
Materials & Finishes
- Harmer Uni-Ring is manufactured from shallow injection moulded polyethylene
- It is watertight and resistant to mould and freeze-thaw
Installation & Maintenance
- Harmer Uni-Ring is quick and easy to install. Traditional bedding and grouting materials are not required
- Once installed, paving slabs can be easily lifted for simple inspection of drainage outlets and for substructure maintenance
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