Storage and Drainage Board is a high-density composite geosynthetic sheet widely used in landscape, municipal, environmental and civil engineering projects for water collection, rapid drainage, waterproof protection and soil isolation applications.
Introduction
Storage and Drainage Board are functional geosynthetic materials specially designed for water management systems. With three-dimensional hollow dimple structure, they provide stable water storage space and unobstructed drainage channels. They deliver excellent compression resistance and long-term structural stability in humid, buried and high-pressure engineering environments.
What is Storage and Drainage Board?
A
Storage and Drainage Board is a rigid dimpled plastic sheet integrating water storage and drainage functions. It is commonly manufactured from high-density polyethylene (HDPE) and polypropylene (PP) raw resin through one-piece compression molding process.
These engineered sheet structures are essential for collecting rainwater, draining redundant water rapidly, reducing hydrostatic pressure, protecting waterproof layers, and maintaining healthy soil moisture for vegetation and underground structures.
Types of Storage and Drainage Boards
Single-layer Storage and Drainage Board: Simple dimple structure, lightweight for general green roof drainage
Composite Storage and Drainage Board: Bonded with non-woven geotextile for integrated filtration and water retention
High-strength Storage Drainage Board: Thickened sheet for heavy-load underground and landfill projects
Root-resistant Storage Drainage Board: Anti-penetration design for vegetation protection and building isolation
Key Features of Storage and Drainage Board
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Dual functions of water storage and rapid drainage
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High compression resistance without deformation under heavy load
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Excellent chemical, acid and alkali corrosion resistance
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Anti-root penetration, anti-aging and UV stabilization performance
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Smooth internal channels to avoid blockage and ensure stable water flow
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Lightweight sheet for easy cutting, transportation and on-site installation
Technical Specifications
Dimple Height: 12mm – 50mm
Width: up to 3 meters
Material: HDPE / PP virgin plastic resin
Structure: Single dimple / Composite geotextile bonded structure
Standards: ASTM, ISO
Applications of Storage and Drainage Board
Storage and Drainage Boards are widely used in various industries:
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Roof greening, vertical greening and garden landscape projects
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Building basement waterproofing and underground garage drainage systems
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Artificial lake, wetland and rainwater recycling engineering
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Landfill anti-seepage, leachate collection and gas exhaust systems
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Municipal tunnel, underground passage and isolation protection works
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Park green belt, ecological slope and agricultural water retention projects
Advantages of Storage and Drainage Board
Compared with traditional gravel drainage layers, storage and drainage boards offer several advantages:
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Dual water storage and drainage performance to optimize water resource utilization
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Effectively reduce hydrostatic pressure and extend waterproof layer service life
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Hard three-dimensional structure to prevent channel collapse and blockage
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Save construction space and reduce overall project construction cost
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Environmentally friendly, non-toxic and recyclable polymer material
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Long-term anti-aging performance for stable buried service life
Installation and Laying
Storage and drainage boards are laid on flat, clean and compacted base layers. Keep the dimpled side upward for water collection and storage. Overlap adjacent sheets reasonably and seal joints tightly to prevent water seepage. Fix the board edges to avoid sliding and dislocation. Cover geotextile on the surface to achieve filtration and isolation effect, ensuring smooth water circulation inside the drainage channels.
How to Choose Storage and Drainage Board?
When selecting storage and drainage board, consider the following factors:
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Project type: green roof, basement, landfill or ecological landscape
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Required dimple height, water storage capacity and compression strength
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Construction environment: corrosive soil, humid underground space or exposed greening area
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Ordinary type or composite type with geotextile layer
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Compliance with international engineering quality standards
FAQ
What is storage and drainage board used for?
It is used for rainwater storage, rapid drainage, basement waterproofing, green roof irrigation and underground isolation protection in landscape and civil engineering.
What is the difference between drainage board and storage & drainage board?
Ordinary drainage board only discharges water, while storage and drainage board combines water storage and drainage functions, which can reserve moisture for plants while removing excess water.
How long does storage and drainage board last?
Made of high-quality HDPE material, it can last 50–70 years under buried conditions with stable structural performance.
Can storage and drainage board be customized?
Yes, dimple height, sheet thickness, width and surface color can be customized according to customer engineering requirements.
Conclusion
Storage and Drainage Boards are multi-functional geosynthetic materials for modern water management and landscape construction projects. Their integrated water storage & drainage design, high compression resistance and excellent durability make them an indispensable solution for greening, municipal and underground engineering industries.
