DELTA®-FLORAXX TOP
DELTA®-FLORAXX TOP is an advanced geocomposite drainage board designed for modern green roofs, rooftop gardens, and landscape terrace projects. Engineered to provide long-lasting performance and sustainable water management, it combines drainage, water retention, protection, and filtration functions in a single product.
Featuring a self-adhesive overlap edge, DELTA®-FLORAXX TOP ensures quick installation, secure connections, and reliable performance throughout the life of the roof system.
Key Benefits
High Water Storage Capacity
The system stores approximately 7 liters of water per square meter, providing a valuable moisture reserve for plants during dry periods. Excess rainwater is safely drained through integrated perforations, preventing water accumulation.
Multifunctional Performance
DELTA®-FLORAXX TOP combines several essential green roof functions into one integrated solution:
-
Drainage
-
Water retention
-
Protective separation
-
Filtration
This reduces installation complexity and improves overall system efficiency.
Excellent Drainage Capacity
Its high drainage performance prevents waterlogging within the substrate layer, helping maintain healthy root development and protecting the roof structure.
Fast and Easy Installation
The lightweight roll format allows for quick installation. Self-adhesive overlap edges create secure connections, prevent shifting, and help maintain system integrity.
Cost-Effective Solution
Because the product eliminates the need for traditional drainage gravel layers, it reduces:
-
Material consumption
-
Installation time
-
Labor costs
-
Construction waste
Long-Term Durability
Manufactured from high-quality materials, DELTA®-FLORAXX TOP is resistant to:
-
Chemical exposure
-
Rot and decay
-
Environmental aging
The product is also neutral to drinking water and suitable for long-term applications.
Integrated Geotextile Layer
A bonded polypropylene filtration geotextile creates a uniform surface while preventing soil particles from entering the drainage layer. It also helps reduce issues related to shifting, lifting, or wind displacement.
Applications
DELTA®-FLORAXX TOP is ideal for:
-
Green roof systems
-
Rooftop gardens
-
Landscaped terraces
-
Sustainable building projects
-
Commercial and residential green infrastructure
When combined with a root barrier membrane and moisture-retention fleece, it forms a complete DELTA® Green Roof System, providing reliable root protection, efficient water management, and long-term structural security.
Technical Specifications
| Property | Value |
|---|
| Material | Perforated HDPE drainage board with PP filtration geotextile |
| Stud Height | Approx. 20 mm |
| Air Volume Between Studs | Approx. 14 l/m² |
| Compressive Strength | Approx. 200 kN/m² (EN ISO 604) |
| Water Storage Capacity | Approx. 7 l/m² |
| In-Plane Water Flow Capacity | Approx. 10 × 10⁻³ m²/s (10 l/s·m) |
| Drainage Capacity Through Perforations | Approx. 1.20 l/m²·s |
| Geotextile Water Permeability | 8 × 10⁻² m/s (EN ISO 11058) |
| Temperature Resistance | -30°C to +80°C |
| Roll Dimensions | 10 m × 2 m (Geotextile width: 2.10 m) |
Why Choose DELTA®-FLORAXX TOP?
Multiple Functions in One Product
A single solution for drainage, filtration, protection, and water retention.
Supports Plant Health and Building Protection
Efficient water management promotes healthy vegetation while protecting the roof structure from excess moisture.
Easy Installation and Economic Advantages
Reduced labor requirements and fewer materials help lower overall project costs.
Sustainable Long-Term Performance
Its durable construction and reliable functionality make it an excellent choice for environmentally responsible building projects.
Conclusion
DELTA®-FLORAXX TOP is a high-performance drainage and water management solution designed specifically for green roofs and rooftop landscaping projects. By integrating multiple essential functions into a single product, it simplifies installation, enhances system efficiency, and contributes to the long-term success of sustainable roof designs.
Frequently Asked Questions (FAQ)
1. What types of projects can use DELTA®-FLORAXX TOP?
It is suitable for green roofs, rooftop gardens, landscaped terraces, and other vegetated roof systems.
2. How much water can it store?
The system stores approximately 7 liters of water per square meter, helping plants remain healthy during dry weather conditions.
3. Is a gravel drainage layer required?
No. DELTA®-FLORAXX TOP eliminates the need for additional drainage gravel, reducing both weight and installation costs.
4. How durable is the product?
The material is resistant to chemicals, decay, and environmental aging. It is also neutral to drinking water and designed for long-term performance.
5. What should be considered during installation?
The rolls should be installed with at least one stud overlap. The self-adhesive edges must be firmly bonded together to create a continuous and secure drainage layer.