An HDPE dimple drainage board creates a continuous drainage space within roof garden and landscape assemblies. The formed profile helps move excess water toward outlets while providing separation and protection above compatible waterproofing layers.
HDPE Dimple Drainage Board Applications
| Item No. | MP-S25A |
| Size | 333 × 333 × 25 mm |
| Material | HDPE |
| Published pressure-strength reference | 1000 kN |
| System role | drainage and separation layer |
Role in the Green Roof Build-Up
This component is normally installed above compatible waterproofing or protection layers and below the filter and landscape build-up. It should be treated as one part of a coordinated roof build-up rather than a standalone waterproofing or structural solution. The final assembly must maintain drainage continuity and allow roof outlets and inspection points to remain accessible.
Design and Installation Considerations
- Confirm roof or podium falls, outlet capacity, cover layers, design loads and compatibility with the waterproofing system.
- Prepare the substrate and adjacent layers so they are clean, stable and free from sharp projections.
- Follow the project drawings for orientation, overlaps, edge details and outlet treatment.
- Protect completed areas during the placement of subsequent layers and growing medium.
- Inspect the assembly before covering it and retain records of concealed work where required.
Typical Applications
HDPE Dimple Drainage Board for Roof and Landscape Areas can be considered for extensive or intensive green roofs, roof gardens, podium landscapes and other planted build-ups where its stated function matches the project design. Selection should be based on the complete system specification, roof geometry, vegetation, growing-medium depth, rainfall, drainage strategy and maintenance plan.
Project Support
For product selection and quantity planning, provide the roof plan, build-up detail, total area, outlet layout and project performance requirements. We can then coordinate the product format, packing and supply information while the project designer confirms the complete waterproofing, drainage and structural design.