Continuous drainage path
In a plastic drainage sheet, the formed dimples maintain a flow space below the protected layer. Consequently, water can move toward the designed collection points.
A plastic drainage sheet is a lightweight dimpled roll that creates a continuous drainage and protection layer for roofs, landscapes, retaining walls and civil construction.
Plastic Drainage Sheet for Roof and Landscape Projects
Dimpled high-density polyethylene rolls replace part of the traditional pebble drainage layer, helping project teams reduce weight, installation time and material handling.
Commercial Dimpled Drainage Sheet Overview
A dimpled drainage sheet uses a formed high-density polyethylene membrane. As a result, the raised dimples create a three-dimensional void with support stiffness, allowing liquid and air to move within the installed layer. In addition, the dimple geometry is designed to resist long-term pressure without losing the required drainage space.
Compared with a loose pebble layer, a plastic drainage sheet in roll format can save installation time, handling effort and roof load. It also combines effectively with filter fabric to create filtration, seepage and drainage functions. For design approval, request load data for the selected LYDS model and confirm the test method, installation orientation and project build-up.
For broader planning context, the U.S. Environmental Protection Agency explains how green infrastructure can manage rainfall where it falls. Therefore, the drainage layer is one component of a complete engineered assembly, so designers must coordinate waterproofing, filtration, outlets, overflow and structural loading.
high-density polyethylenePrimary material
−40°C to 90°CPublished working range
1.0–2.8 kg/m²Standard unit weight
2 m / 3 mStandard roll widths
Lower handling demand
A plastic drainage sheet can reduce the labor and weight associated with traditional granular drainage. Moreover, the material is simple to cut around project details.
Durable material profile
Furthermore, the sheet offers chemical resistance, plant-root puncture resistance and a low-maintenance drainage surface when specified correctly.
Dimpled Drainage Roll Product Images
Dimpled Plastic Drainage Sheet Technical Data
The LYDS series plastic drainage sheet is available in eight standard dimple heights. Choose a standard roll width of 2 m or 3 m and a standard roll length of 10 m, 15 m or 20 m.
| Model | Dimple height (mm) | Unit weight (g/m²) |
|---|---|---|
| LYDS10 | 10 | 1000 |
| LYDS14 | 14 | 1200 |
| LYDS20 | 20 | 1400 |
| LYDS25 | 25 | 1600 |
| LYDS30 | 30 | 1900 |
| LYDS40 | 40 | 2200 |
| LYDS50 | 50 | 2500 |
| LYDS60 | 60 | 2800 |
| Standard specification | Available options |
|---|---|
| Roll width | 2 m, 3 m |
| Roll length | 10 m, 15 m, 20 m |
| Material | High-density polyethylene (HDPE) |
| Color | Black, White, Blue, Green |
| Package | Bundle |
| Minimum order | One bundle |
Project specification: For procurement and engineering review, request model-specific data sheets and test reports for compressive, bending and puncture strength, drainage capacity and elongation at break. Confirm the selected model, roll dimensions, packing and shipping volume with your quotation.
Plastic Drainage Sheet Advantages and Applications
Original advantages
- Low cost and high installation efficiency
- Durable formed sheet
- Chemical resistance
- Resistance to plant-root puncture
- Diverse applications
- Simple installation and controlled quality
Greening and construction
- Garage roofs and roof gardens
- Vertical greening
- Football pitches and golf courses
- Foundations, basement walls and floors
- Roof seepage-control and insulation layers
Plastic Drainage Sheet for Civil and Water Projects
- Airports, embankments, subways and tunnels
- Landfills and retaining structures
- Reservoir and lake seepage-control work
- Highways, railway roadbeds, dams and slopes
For rigid modular drainage and storage cells, compare our drainage board. For modular rooftop planting, review our green roof tray systems.
Selection checklist
Confirm sheet height, roll size, design load, puncture resistance, flow direction, filter fabric, waterproofing compatibility and outlet spacing.
Project Planning Sequence
First, define the application and drainage objective. Next, confirm the design load and sheet orientation. Then, coordinate waterproofing, filter fabric and outlet details. Moreover, request current technical data and packing information. Finally, approve a project-specific sample or specification before procurement. For example, record the selected model and roll size in the purchase order. However, do not rely on general page values where certified data is required. Therefore, keep the approved technical file with the project records. For example, compare the proposed roll with the approved sample. However, treat general website values as preliminary references. Consequently, confirm certified values before contractual approval. In addition, verify roll quantity against the final area. Furthermore, check pallet or bundle dimensions with the logistics team. Moreover, coordinate delivery timing with site access. Similarly, verify membrane and filter fabric compatibility. Meanwhile, reserve allowance for cutting and overlaps. Afterward, issue the approved material schedule. Thus, procurement can compare quotations on the same basis. Finally, archive the supplier response and test documents. In contrast, reject substitutions that lack comparable documentation. As a result, site teams receive a clearly identified product. For this reason, note any approved deviation in writing. In conclusion, release the order only after technical and commercial review.
Request Plastic Drainage Sheet Project Pricing
Send the project location, application, area, target sheet height, loading conditions, delivery port and schedule. As a result, our team can review model selection, quantity, packaging and lead time.
Submit Project DetailsDimpled Drainage Sheet FAQ
What is a plastic drainage sheet?
In short, it is a dimpled high-density polyethylene roll that creates a drainage and protection void behind or below construction layers. Depending on the assembly, it can work with filter fabric to filter soil particles.
Can it replace a pebble drainage layer?
It can replace part of a traditional granular drainage layer in suitable designs. However, the project engineer must verify drainage capacity, loading, waterproofing protection and local requirements.
Which model should a buyer choose?
First, compare dimple height, roll dimensions, unit weight, pressure data, puncture strength, flow capacity and installation conditions. Next, request current model-specific test documentation.
Is the product suitable for roofs?
Yes, selected sheets can suit roof gardens and podium landscapes when the complete roof assembly meets structural, waterproofing, filtration and drainage requirements.
Related terms: drainage sheet, dimpled high-density polyethylene rolls, drainage plastic sheeting and sheet drainage systems.
Quick project answers
Drainage sheets: practical selection guidance
Plastic drainage sheets create a lightweight drainage path within roof, podium, retaining-wall and landscape build-ups. Their role is to move excess water while helping protect adjacent construction layers.
Where are drainage sheets commonly used?
Typical applications include green roofs, podium landscapes, planters, retaining walls and other assemblies where water must move toward a designed outlet.
What determines the appropriate drainage sheet?
Important factors include drainage capacity, compressive load, installation orientation, soil or fill depth, filter fabric requirements, waterproofing protection and the intended flow path.
Is a drainage sheet a substitute for waterproofing?
No. It is a drainage and protection component. The waterproofing system, outlets and complete assembly must be designed and installed separately for the project.