DELTA FLORAXX – Drainage Sheet for Green Roofs and Inverted Roof Systems

DELTA FLORAXX

DELTA®-FLORAXX is an advanced drainage and protection solution specially developed for modern green roof and inverted roof systems. With its perforated and diffusion-open structure, it provides efficient water management, stores moisture required by plants and creates a breathable protective layer.

Main Advantages

High Water Storage Capacity:
Stores approximately 7 l/m² of water, providing essential moisture for plant growth. Excess water is directed to the lower drainage layer through perforation openings.

80% Higher Compressive Strength:
Its 20 mm high octagonal stud structure provides up to 80% higher strength compared to standard drainage sheets.

Vapor Permeability:
Thanks to its diffusion-open structure (Sd value ~0.4 m), it creates a breathable protection layer. This feature provides significant advantages, especially in inverted roof systems under gravel or stone coverings.

Easy Installation:
The roll format enables fast installation, while the 10 cm overlap allowance ensures secure and reliable assembly.

Long-Lasting Protection:
Made of HDPE material, it offers excellent resistance against chemicals and external environmental conditions.

Application Areas

Green Roof Systems:
Ideal for extensive and intensive green roof applications.

Inverted Roof Systems:
Creates a breathable protective layer between the waterproofing membrane and the gravel or stone covering.

Garden Terraces:
Maintains moisture balance for plant growth and efficiently drains excess water.

For complete green roof system solutions, DELTA®-FLORAXX can be used together with DELTA®-FLORAXX TOP and DELTA®-FLORAXX TEX.

Technical Data

Property	Value
Material	Perforated HDPE studded sheet
Stud Height	~20 mm
Compressive Strength	~200 kN/m² (EN ISO 604)
Air Volume Between Studs	~14 l/m²
Water Storage Capacity	~7 l/m²
Drainage Capacity	~10 x 10⁻³ m²/s (10 l/s·m) (EN ISO 12958)
Temperature Resistance	-30°C / +80°C
Roll Dimensions	2.0 m x 20.0 m

Why Choose DELTA®-FLORAXX?

Specially designed for green roof projects
High drainage and water storage capacity
Durable and diffusion-open structure
Easy installation and long-lasting performance

Frequently Asked Questions (FAQ)

1. Where can DELTA®-FLORAXX be used?

It can be used as a drainage solution for green roofs, inverted roofs and garden terrace applications.

2. What is the water storage capacity of DELTA®-FLORAXX?

It stores approximately 7 l/m² of water, helping plants maintain sufficient moisture during dry periods.

3. What is the compressive strength of DELTA®-FLORAXX?

Thanks to its octagonal stud structure, it withstands approximately 200 kN/m² of pressure and provides up to 80% higher strength compared to standard sheets.

4. Can DELTA®-FLORAXX be used in inverted roofs?

Yes. Its diffusion-open structure creates a breathable protection layer under stone or gravel coverings in inverted roof systems.

5. Is DELTA®-FLORAXX easy to install?

Yes. It is supplied in roll form, allowing quick and practical installation. Secure fixing can be achieved with a 10 cm overlap.

DELTA®-FLORAXX provides a reliable, durable and practical solution for water management and plant health in green roof systems.