Jul 17, 2026
Dimple Drainage Board
High-Efficiency HDPE Studded Drainage Sheet for Global Construction Projects
As a key geosynthetic drainage material, our Dimple Drainage Board (also known as Studded Drainage Sheet or Convex Drainage Board) is precision-manufactured from premium virgin HDPE resin through high-pressure molding technology. It features regular convex dimple protrusions on one side, forming a three-dimensional hollow cavity that creates continuous water and air flow channels. This design enables rapid drainage of groundwater, effective release of hydrostatic pressure, and reliable protection of engineering structures. Our composite dimple drainage board, pre-bonded with non-woven geotextile, integrates filtration, drainage and protection functions, making it an ideal choice for construction, landscape, tunnel and environmental projects worldwide.
Email: gavin @glorybridgeproject.com
WhatsApp/Phone: +8613127104111
Core Product Features
Our Dimple Drainage Board stands out in the global market with its superior performance, meeting both international and domestic industry standards. Here are its key advantages:
- Efficient Unblockable Drainage & Ventilation: Uniform convex studs form stable void layers, realizing lateral rapid water diversion. The composite non-woven geotextile effectively blocks soil particles, sand and debris, avoiding channel clogging. The dual drainage and aeration function not only protects building structures from water damage but also provides a breathable environment for plant root systems in greening projects.
- Ultra-High Compressive Resistance: The reinforced convex dimple structure is designed to withstand heavy loads, including backfill soil, concrete pouring and vehicle traffic, without deformation or collapse. The standard compressive strength reaches 200–400kPa, and customized high-strength models can reach over 500kPa, suitable for heavy-load garage roofs, municipal subgrades and other high-pressure scenarios.
- Superior Chemical & Aging Resistance: Made from virgin HDPE resin with added anti-UV agents, antioxidants and anti-corrosion additives, it has excellent resistance to acids, alkalis, salts, soil corrosion and microbial erosion. Its service life exceeds 50 years in underground and covered applications, and over 30 years for outdoor green roof and landscape projects.
- Multi-Functional Protection Layer: It acts as a protective barrier between waterproof geomembranes and sharp gravel, effectively preventing puncture damage to waterproof layers. At the same time, it reduces structural moisture accumulation, and achieves auxiliary heat insulation and noise reduction effects, extending the service life of the overall project structure.
- Lightweight & Low-Cost Construction: Supplied in lightweight roll form, it is easy to cut, overlap and hot-melt weld on site. It perfectly replaces traditional gravel drainage layers, greatly reducing the overall weight of the project, shortening construction time by 60% and lowering engineering costs by 30%–50%. It is suitable for both small-scale civil works and large-scale engineering projects.
- Environmentally Friendly & Non-Toxic Material: Made from 100% virgin HDPE, it contains no harmful substances, heavy metals or volatile organic compounds. It is safe for use in roof greening, aquaculture, underground water storage and other projects requiring environmental protection and non-toxicity.
Standard Specifications
We offer a full range of Dimple Drainage Board specifications, including different dimple heights, thicknesses and composite geotextile configurations, to meet the diverse needs of global projects. Custom sizes and performance parameters are also available upon request.
Dimple Height (mm) | Sheet Thickness (mm) | Standard Width (m) | Roll Length (m) | Compressive Strength (kPa) | Vertical Drainage Flow Rate (cm³/s) | Main Applications |
|---|---|---|---|---|---|---|
8/10 | 0.7-1.0 | 2/2.5/3 | 15/20/50 | ≥200 | ≥8 | Light green roof, indoor floor moisture barrier, basement sidewall light protection |
16/20 | 1.0-1.5 | 2/2.5/3 | 10/15/20 | ≥300 | ≥12 | Garage roof greening, basement floor drainage, foundation pit waterproofing |
25/30 | 1.5-2.0 | 2/2.5 | 10/15 | ≥400 | ≥18 | Municipal roads, tunnels, retaining wall backfill drainage, plaza hardening |
40/50 | 1.8-2.0 | 2 | 10 | ≥500 | ≥25 | Landfill lining protection, tailings pond drainage, heavy-load subgrade |
Composite Geotextile Configuration: Optional non-woven geotextile with weight of 150g/㎡, 200g/㎡, 300g/㎡, pre-bonded on the dimple side or flat side according to project requirements.Key Mechanical Index: Tensile strength ≥300N/100mm; Elongation at break ≥80%; CBR puncture resistance ≥350N; Thermal bonding strength (composite type) ≥20N/100mm.
Wide Range of Applications
Our Dimple Drainage Board is widely used in various engineering fields across the globe, providing efficient drainage and reliable protection solutions for different project scenarios:
1. Construction & Basement Engineering
Ideal for basement floor and sidewall drainage protection, foundation pit waterproofing, underground garage roof greening, building floor moisture isolation, and underground pipe gallery drainage. It effectively releases hydrostatic pressure, prevents basement water seepage and moisture accumulation, and protects the building structure.
2. Landscape & Green Roof Projects
Suitable for roof gardens, vertical greening, community lawns, football fields, golf courses and park rainwater storage and infiltration systems. It provides good drainage and aeration conditions for plant roots, avoids root rot caused by waterlogging, and helps maintain the ecological balance of green spaces.
3. Municipal & Traffic Engineering
Applied in subway, highway and railway tunnel lining drainage, road subgrade drainage, retaining wall backfill drainage, and plaza hardening layers. It can quickly drain groundwater in road and tunnel structures, prevent road settlement and tunnel water damage, and ensure the safety and stability of traffic infrastructure.
4. Environmental & Water Conservancy Projects
Used in municipal solid waste landfills, tailings pond liner protection, artificial lakes, reservoirs and fish pond drainage and anti-seepage protection layers. It not only achieves efficient drainage but also protects the anti-seepage geomembrane from puncture damage, ensuring the environmental safety of the project.
Product Classification
We offer three types of Dimple Drainage Board to meet different project needs, with flexible selection options:
- Single Dimple Drainage Board: Pure HDPE studded sheet without geotextile. It is cost-effective and suitable for small-scale projects where geotextile needs to be laid separately on site.
- Composite Dimple Drainage Board: Dimple board thermally bonded with non-woven geotextile. It integrates drainage and filtration functions, enabling one-step laying, improving construction efficiency and avoiding channel clogging. It is the preferred choice for large-scale engineering projects.
- Double-Sided Dimple Drainage Board: Convex studs on both sides, forming double drainage channels. It is specially designed for tunnel intermediate drainage layers, with better drainage performance and structural stability.
Compliance with International Standards
Our Dimple Drainage Board strictly adheres to global industry standards and has passed multiple international certifications, ensuring its quality and performance meet the requirements of global projects:
- Domestic Standards: CJ/T 234-2006 (China)
- International Standards: ASTM D6693 (USA), ISO 10318 (International Organization for Standardization), GRI GM13 (Global Geosynthetics Research Institute)
- Certifications: SGS Test Report, CE Certification, ISO 9001 Quality Management System Certification
Our Services
As a professional manufacturer and exporter of geosynthetic materials, we are committed to providing global customers with high-quality products and comprehensive services:
- Customized Production: We can customize dimple height, sheet thickness, width, roll length and composite geotextile specifications according to your project requirements.
- Professional Technical Support: Our team of engineers provides on-site construction guidance, welding technology training and project drainage solution design.
- Fast Delivery: We have a large production capacity and can deliver products to any port in the world on time, supporting FOB, CIF and other trade terms.
- Competitive Pricing: Factory direct sales with no middlemen, offering competitive prices while ensuring product quality and performance.
- Perfect After-sales Service: We provide long-term after-sales support, solving any product or construction-related problems for you, and ensuring the smooth progress of your project.
Why Choose Our Dimple Drainage Board?
With years of experience in the geosynthetic industry, we have exported our Dimple Drainage Board to more than 70 countries and regions, including Europe, America, Southeast Asia, Africa and the Middle East. Our products have been widely used in thousands of projects, such as underground garage greening, tunnel drainage and landfill protection, winning high praise from customers for their excellent quality and reliable performance.Whether you are engaged in construction, landscape, municipal or environmental projects, our Dimple Drainage Board will provide you with a safe, efficient, durable and cost-effective drainage solution.
