TekDrain GDL 700/250 Drainage Board | HDPE Geotextile Heavy-Duty Drainage Protection Board
TekDrain GDL 700/250 Drainage Board
Professional Protection with HDPE and DuPont™ Typar® SF 32 Geotextile
TekDrain GDL 700/250 is a heavy-duty drainage board manufactured with a high-density polyethylene (HDPE) core laminated with DuPont™ Typar® SF 32 geotextile (110 g/m²). Designed for demanding construction applications, it provides outstanding resistance to soil pressure while protecting foundation walls, retaining walls, waterproofing membranes, and thermal insulation systems from moisture and groundwater.
Its studded HDPE structure creates an efficient drainage cavity that allows walls to breathe, while the geotextile filter prevents soil particles from entering and clogging the drainage channels, ensuring long-term drainage performance.
Product Description
TekDrain GDL 700/250 features a composite drainage system consisting of:
- Studded HDPE core: Waterproof and designed to promote wall ventilation.
- DuPont™ Typar® SF 32 geotextile layer: Allows water to pass through while preventing soil particles from entering the drainage channels.
- Hydrostatic pressure management: Protects foundation waterproofing systems and extends the service life of below-grade structures.
Technical Specifications
| Property | Value / Standard |
|---|
| Material | HDPE |
| Compressive Strength | 250 kN/m² |
| Tensile Strength (MD / CD) | 300 N/5 cm – 300 N/5 cm |
| Elongation at Break (MD / CD) | 20% – 25% |
| Drainage Board Weight | 600 g/m² |
| Total Weight | 710 g/m² |
| Roll Weight | 28.40 kg |
| Roll Length | 20 m |
| Roll Width | 2.00 m |
| Film Thickness | 0.8 mm |
| Stud Height | 8 mm |
| Geotextile Weight | 110 g/m² (DuPont™ Typar® SF 32) |
Technical values are based on manufacturer testing and may vary depending on site conditions.
Applications
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Foundation wall drainage systems
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Retaining walls
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Protection of waterproofing membranes
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Green roof and roof terrace drainage
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Underground parking structures
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Basements
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Tunnel construction
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Protection of thermal insulation boards
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Controlled drainage beneath below-grade insulation systems
Product Features and Benefits
High Compressive Strength (250 kN/m²)
Provides superior resistance to soil pressure and mechanical impacts.
DuPont™ Typar® SF 32 Geotextile
Filters water efficiently while preventing soil particles from clogging the drainage system.
Durable HDPE Construction
Offers excellent resistance to root penetration, chemicals, and biological degradation.
Ventilated Drainage System
The studded profile creates an air cavity that allows foundation walls to remain dry and ventilated.
Protection for Waterproofing and Insulation
Shields waterproofing membranes and thermal insulation boards from damage during backfilling operations.
Even Load Distribution
Distributes soil pressure evenly, reducing localized stress and extending the lifespan of the building envelope.
Fast Installation
Supplied in roll form for quick and efficient installation over large surface areas.
Long-Term Performance
Maintains its structural integrity and drainage efficiency while resisting chemical and biological deterioration.
Installation Benefits
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Protects waterproofing membranes from mechanical damage
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Provides controlled drainage of groundwater and moisture
-
Extends the service life of drainage systems while reducing maintenance requirements
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Prevents moisture-related problems in foundation and retaining walls
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Protects thermal insulation boards from external pressure
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Resistant to plant roots, microorganisms, and aggressive soil conditions
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Chemically stable for long-term durability
Packaging and Storage
Packaging
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Roll length: 20 m
-
Roll width: 2.00 m
-
Roll weight: 28.40 kg
Storage
Store in a dry location away from direct sunlight on a flat surface.
Shelf Life
When stored under appropriate conditions and protected from mechanical deformation, the product maintains its performance indefinitely.
Frequently Asked Questions (FAQ)
Where can TekDrain GDL 700/250 be used?
It is suitable for foundation walls, retaining walls, green roofs, terraces, underground parking structures, tunnels, basements, and other below-grade construction applications.
What is its main advantage?
Its 250 kN/m² compressive strength provides exceptional protection for waterproofing systems while efficiently directing water into the drainage system.
What is the function of the geotextile layer?
The geotextile allows water to pass freely while preventing soil particles from entering the drainage channels and causing blockages.
Is the product resistant to plant roots?
Yes. The HDPE core provides excellent resistance to root penetration, chemicals, and biological degradation.
What should be considered during installation?
The drainage board should be installed with the geotextile layer facing the soil, and adjacent sheets should overlap properly to ensure continuous drainage performance.
TekDrain GDL 700/250 is a high-strength drainage protection board featuring an HDPE studded core and DuPont™ Typar® SF 32 geotextile filter, providing long-lasting protection for waterproofing systems while delivering efficient drainage and moisture management in demanding construction applications.