Drainage and geotextiles

Soprema and Danodren geotextiles and drainage systems offer a high-end engineering solution for channelling water and stabilising ground on any type of construction site. These drainage membranes and synthetic fabrics prevent the build-up of moisture in underground structures, foundations and technical roof systems, ensuring the building remains in good condition. If you are looking to protect your facilities against erosion and water ingress, this range offers the highest level of efficiency on the market.

Technical filtration solutions with Soprema’s Rooftex V geotextiles

Manufactured from high-tenacity synthetic fibres, the non-woven geotextiles in the Rooftex V series act as a separating, filtering and protective layer in the ground. Their permeable structure allows water to pass freely whilst retaining fine soil particles, preventing drainage channels from becoming blocked over time. Thanks to their excellent resistance to mechanical puncture, they effectively protect waterproofing membranes against sharp edges and gravel.

This range is available in different weights, such as the Rooftex V 120, V 150 and V 300 versions, in continuous rolls 2.20 metres wide, catering to a wide range of structural requirements. Their light weight facilitates rapid, crease-free laying on the prepared sub-base, making them an indispensable component in roads, green roofs, embankments and drainage ditches. Furthermore, their inert composition prevents chemical degradation caused by microorganisms or soil compounds.

Structural protection using nodular membranes and Danodren materials

For water drainage in buried walls and floor slabs, the Danodren series drainage sheets create an efficient air chamber that relieves hydrostatic pressure. Their nodular structure channels water flow towards the underlying drainage network, preventing moisture from coming into direct contact with the concrete walls. This physical separation mechanism ensures a dry environment in basements, garages and structures below ground level.

The system is complemented by fasteners specifically designed for Danodren sheets, which secure the overlaps at the top of the wall without compromising the watertight seal. Its clean and precise installation ensures a firm hold against the wall before backfilling the trench. The use of approved accessories simplifies installation on site and guarantees that the drainage system maintains its optimal position throughout the building’s service life.

Key benefits of the drainage and geotextile range

• Permanent and efficient filtration to prevent clogging in drainage layers.
• High-strength mechanical protection for waterproof membranes against punctures.
• Continuous water drainage in walls below ground level thanks to nodular technology.
• Large-format rolls that optimise installation times and minimise joints.
• Technical fastening elements designed for secure and long-lasting installation.

Selection criteria for stabilising ground and draining water

When selecting the most suitable material, you must assess the expected mechanical load, the type of ground and the volume of water to be drained. For separation work on undemanding ground or lightweight roofs, the density of the Rooftex V 120 geotextile offers an excellent balance between filtration and performance. On the other hand, for high-demand foundations or the protection of heavy membranes, options such as Rooftex V 300 guarantee maximum structural strength.

Always plan for the overlaps recommended by the manufacturer and use compatible fixings to maintain the continuity of the drainage barrier. A properly designed filtration system drastically reduces maintenance costs and prevents future damp-related problems. Explore the products in the range and incorporate the highest level of technical reliability into your construction projects.