Numadrain geocomposite
Numadrain is a high drainage capacity geocomposite designed to collect, convey and evacuate liquids and gases within its plane. It consists of a flexible drainage core, usually manufactured with high-strength polymeric materials, which allows it to maintain its drainage capacity even under compression conditions.
This core may have different geometries depending on the application, such as alveolar structures, multifilament structures or biplanar and triplanar meshes. In addition, it can incorporate one or two polypropylene geotextiles heat-bonded on one or both sides, acting as a filtering and protective layer, preventing the migration of fines and improving the overall performance of the system.
Thanks to its structure, Numadrain can replace or complement traditional drainage layers, enabling faster installation, reducing the volume of granular materials and optimising execution times on site. Its use helps improve water management, protect waterproofing systems and increase the durability of infrastructures.
Numadrain stands out for the following characteristics:
Characteristics
- High drainage capacity
- Efficient evacuation of liquids and gases
- Flexible drainage core resistant to compression
- Possibility of incorporating geotextile on one or both sides
- Filtering, separation and protection function
- Reduced use of gravel or granular materials
- Fast and simple installation
- Good adaptability to different surfaces and geometries
- Protection of the waterproofing system
For all these reasons, Numadrain is a solution especially suitable for drainage systems in walls, roofs, embankments, landfills, ponds, hydraulic infrastructures, underground works and other applications where it is necessary to collect and evacuate water or gases efficiently, safely and durably.

Other Geomembranes
Numapol HDPE
Geomembrana de polietilè d’alta densitat desenvolupada per complir amb els requisits tècnics del mercat francès i les especificacions ASQUAL.
Pensada per a projectes que exigeixen un alt nivell de control, traçabilitat i prestacions tècniques.
Numapol HDPE ASQUAL
Geomembrana de polietilè d’alta densitat desenvolupada per complir amb els requisits tècnics del mercat francès i les especificacions ASQUAL.
Pensada per a projectes que exigeixen un alt nivell de control, traçabilitat i prestacions tècniques.
Numapol HDPE PRO
Geomembrana HDPE d’altes prestacions, formulada amb un paquet especial d’additius antioxidants que milloren la resistència a l’envelliment i allarguen la vida útil del material.
Recomanada per a projectes amb alta exigència tècnica i llarga durabilitat.
Numapol PPF
Geomembrana amb base de polietilè i polipropilè, dissenyada per oferir una major flexibilitat i adaptabilitat al terreny.
És adequada per a aplicacions on es requereix bona resistència mecànica i facilitat d’instal·lació.
Numapol VLDPE
Geomembrana molt flexible, especialment indicada per a projectes on el terreny pot presentar moviments, assentaments o geometries complexes.
Combina impermeabilització, adaptabilitat i resistència.
Complements Geomembranes
Extrusion welding rod
We manufacture polyethylene welding rod in coils for extrusion welding and also supply granulate.
Coloured geomembrane
In addition to black, we can manufacture geomembranes in green, blue or beige on request.
Anchoring profile
We manufacture polyethylene profiles for anchoring to concrete.