What is the difference between water storage drainage board and ordinary drainage board?
What Is the Difference Between Water Storage Drainage Board and Ordinary Drainage Board?
In modern civil engineering, landscaping, and roof garden projects, selecting the right drainage system is essential to ensure structural integrity and optimal water management. Two widely used materials in this domain are the water storage drainage board and the ordinary drainage board. Although they may seem similar in function, the water storage drainage board provides distinct advantages that set it apart from its conventional counterpart.
1. Functional Purpose
The primary difference lies in their functionality. The ordinary drainage board is designed solely to drain excess water away from surfaces such as roofs, basements, or landscapes. It features a raised structure that forms channels or voids to facilitate water flow and prevent waterlogging.
On the other hand, the water storage drainage board offers a dual function—it not only drains water but also stores a specific amount of moisture. Its structure includes concave reservoirs that retain water while allowing overflow to be drained. This makes the water storage drainage board ideal for green roofs and landscaping projects that require moisture retention for plant health.
2. Design and Structure
An ordinary drainage board typically features a flat or studded design made from high-density polyethylene (HDPE) or polypropylene (PP), ensuring durability and strength. Its layout focuses on achieving a continuous water flow path to eliminate hydrostatic pressure.
Conversely, the water storage drainage board has a unique, multi-layered design with concave cavities or cup-like depressions. These cups are strategically designed to capture rainwater, allowing for gradual release or usage by plant roots. This structural advantage enables the water storage drainage board to contribute to eco-friendly irrigation methods.
3. Application Scenarios
The ordinary drainage board is widely used in:
Basement waterproofing systems
Retaining wall protection
Roof deck drainage
Highway and tunnel projects
Meanwhile, the water storage drainage board is specifically engineered for:
Roof gardens
Podium landscaping
Planter boxes
Green infrastructure projects where water conservation is critical
4. Environmental Benefits
While both products contribute to effective drainage, the water storage drainage board enhances sustainability by reducing reliance on artificial irrigation. It aligns with green building practices by supporting stormwater harvesting and minimizing surface runoff, especially in urban environments.
5. Moisture Regulation
One of the most valuable benefits of a water storage drainage board is its ability to regulate soil moisture levels naturally. It stores water during rainfall and releases it slowly, keeping plant roots hydrated over time—something the ordinary drainage board cannot achieve due to its exclusive focus on drainage.
Conclusion
The difference between a water storage drainage board and an ordinary drainage board lies in more than just design—it reflects a shift toward multifunctional and sustainable drainage solutions. The water storage drainage board not only ensures efficient water discharge but also supports water conservation and healthier vegetation in landscaping applications. When choosing between the two, project requirements such as irrigation needs, water retention goals, and environmental impact should guide your decision.
