How much material can Secudrain® drainage geocomposite save on a project?

10,000 m2 of Secudrain® replaces the extraction, transport and installation of approximately 3,000 m3 of granular drainage material. This reduces lorry movements, earthworks volume and site time. The EPD-verified CO2-eq for the average Secudrain® product is 2.20 kg CO2-eq/m2 (A1-A3, avg 819 g/m2). Naue holds ISO 14001 Environmental Management and ISO 50001 Energy Management certifications.

Secudrain® geocomposite for drainage

Secudrain^® is a drainage geocomposite for leachate collection, groundwater protection and building drainage.
A wave-extruded PP monofilament core channels water in-plane. Secutex^® nonwoven filter layers prevent clogging.
Four grades from WD 131 C (6.5 mm) to WD 201 (11.5 mm), incl. BAM-approved RZ 331 - full range in technical data.
CE, DIN 18200, ISO 9001/14001/50001, BAM (RZ grade), EPD, 100-year durability (EN 13249) - full list in technical data.

Secudrain^® is a drainage geocomposite for leachate collection, groundwater protection and building drainage. You install it in sealing systems, against walls or beneath structures. The wave-extruded PP monofilament core channels water in-plane. Secutex^® nonwoven filter layers prevent clogging. This single product replaces gravel drainage layers up to 40 cm thick.

Conventional gravel drainage consumes large volumes of material. It requires excavation, transport and separate filter layers. Secudrain^® solves this. A 6.5 mm geocomposite delivers equal or superior hydraulic performance.

Secudrain^® reduces earthworks volume directly. Fewer lorry loads mean lower costs. Large rolls (3.80 m wide, 35 m long) speed up installation. Fewer materials to procure, less waste to manage. Project savings are measurable from day one.

Secudrain^® meets DIN EN ISO 12958 for in-plane flow. Flow capacity at 20 kPa: 1.0 to 1.5 l/(m x s). The wave geometry resists compressive creep. The RZ 331 grade carries BAM approval and meets DepV requirements for German landfill engineering. All grades carry CE marking and a 100-year durability declaration per EN 13249 Annex B.

Secudrain^® drainage geocomposite functions:

Drainage
The wave-profile PP core channels water in-plane. Flow is maintained under sustained compressive loads.
Filtration
Secutex^® PP nonwoven layers retain soil particles. They prevent clogging of the drainage core.
Protection
The nonwoven outer layers protect the drainage core and adjacent geomembranes from mechanical stress and puncture during installation and service life.

Secudrain^® drainage geocomposite advantages: replaces gravel, saves cost

Secudrain^® delivers measurable advantages over conventional mineral drainage. It reduces material volume, simplifies installation and meets the highest certification requirements.

Replaces thick gravel layers
One layer of Secudrain^® replaces conventional mineral drainage layers of 20 to 40 cm. 10,000 m² of Secudrain^® supersede approx. 3,000 m³ of granular material.
Fast and simple installation
Large rolls (3.80 to 6 m wide, 35 to 70 m long) enable rapid deployment. Pre-manufactured overlaps simplify butt jointing.
Long-term hydraulic performance
The wave profile resists creep under sustained compressive loads. Flow capacity remains stable throughout service life.
BAM approved for landfills
Secudrain^® RZ 331 WDZ 701 RZ 201 carries BAM approval. It meets DepV requirements for German landfill engineering.

Application areas

DepV-compliant sealing systems for landfills
Secudrain^® is a drainage geocomposite used in landfill engineering for leachate collection, gas drainage and sealing layer protection. It is installed above the geomembrane in capping systems and beneath the recultivation soil. The drainage geocomposite removes precipitation-driven leachate. It prevents hydraulic head build-up on the sealing system. The BAM-approved RZ 331 grade meets DepV requirements for regulated German landfill engineering. Tensile strength of 18.0 / 28.0 kN/m md/cmd enables use in reinforced composite sealing systems on slopes.

Typical applications:
Landfill capping systems: Secudrain^® as drainage layer over sealing system to remove precipitation from recultivation soil
Leachate collection drainage layer above liner in landfill base sealing systems
Gas drainage beneath sealing membranes or structures: in-plane gas migration path for active and passive extraction
Multi-layer sealing systems: leachate detection layer between double liner components
Advantages:
BAM approval for German DepV landfill compliance
Replaces granular drainage layer: 10,000 m² Secudrain^® replaces approx. 3,000 m³ of mineral drainage material
Three functions in one product (DIN EN ISO 10318): drainage, filtration and protection
Long-term wave-profile creep resistance ensures drainage capacity over 100-year design life
To the application:
Landfill engineering
Drainage for basement walls, bridge abutments and roads
Secudrain^® is a drainage geocomposite for groundwater protection in infrastructure and building applications. It is installed against basement walls, behind retaining structures and beneath road sealing systems. The geocomposite discharges percolation water and reduces hydrostatic pressure on sealing systems. The 1.9 m wide roll format enables quick installation on wall faces.
Typical applications:
Basement wall drainage (vertical): Secudrain^® as drainage mat behind retaining walls, basement walls and cellars
Bridge abutment drainage: vertical drainage element to relieve water pressure against abutment face
Environmental protection under roads, motorways and railways: drainage layer in sealing systems per RiStWag / MTSE
Advantages:
Reduces hydrostatic pressure on sealing systems: protects Carbofol^® geomembranes and Bentofix^® GCLs
Flexible 360-degree applicability: corners, edges and geometrically complex structures cause no performance issues
IVG certificate replaces site incoming inspection and reduces documentation burden on project
To the application:
Civil engineering Groundwater protection
Further use cases
- Tunnel construction
  Tunnel lining drainage between rock face and concrete lining
  Cut-and-cover tunnel wall drainage behind waterproofing membrane
- Railway engineering
  Building drainage per WAS 7 regulations
  Structural drainage according German RiZ-ING, ZTV E
- Mining
  Tailings storage facility slope drainage below sealing system
  Secondary containment drainage between liner and backfill
- Hydraulic engineering
  Drainage of dykes and embankments: pore water pressure control
  Reservoir and dam drainage within embankment cross-sections
- Sports and recreation
  Artificial turf field drainage under sports surfaces
  Playground drainage beneath impact-absorbing surfaces
- Green roofs and podium gardens
  Drainage and water retention under growing medium
  Single-sided variant for podium and green roof systems

Secudrain^® is a drainage geocomposite used in landfill engineering for leachate collection, gas drainage and sealing layer protection. It is installed above the geomembrane in capping systems and beneath the recultivation soil. The drainage geocomposite removes precipitation-driven leachate. It prevents hydraulic head build-up on the sealing system. The BAM-approved RZ 331 grade meets DepV requirements for regulated German landfill engineering. Tensile strength of 18.0 / 28.0 kN/m md/cmd enables use in reinforced composite sealing systems on slopes.

Typical applications:

Landfill capping systems: Secudrain^® as drainage layer over sealing system to remove precipitation from recultivation soil
Leachate collection drainage layer above liner in landfill base sealing systems
Gas drainage beneath sealing membranes or structures: in-plane gas migration path for active and passive extraction
Multi-layer sealing systems: leachate detection layer between double liner components

Advantages:

BAM approval for German DepV landfill compliance
Replaces granular drainage layer: 10,000 m² Secudrain^® replaces approx. 3,000 m³ of mineral drainage material
Three functions in one product (DIN EN ISO 10318): drainage, filtration and protection
Long-term wave-profile creep resistance ensures drainage capacity over 100-year design life

Aerial view of a landfill capping project where Secudrain® drainage composites are being installed.

To the application:

Landfill engineering

Secudrain^® is a drainage geocomposite for groundwater protection in infrastructure and building applications. It is installed against basement walls, behind retaining structures and beneath road sealing systems. The geocomposite discharges percolation water and reduces hydrostatic pressure on sealing systems. The 1.9 m wide roll format enables quick installation on wall faces.

Typical applications:

Basement wall drainage (vertical): Secudrain^® as drainage mat behind retaining walls, basement walls and cellars
Bridge abutment drainage: vertical drainage element to relieve water pressure against abutment face
Environmental protection under roads, motorways and railways: drainage layer in sealing systems per RiStWag / MTSE

Advantages:

Reduces hydrostatic pressure on sealing systems: protects Carbofol^® geomembranes and Bentofix^® GCLs
Flexible 360-degree applicability: corners, edges and geometrically complex structures cause no performance issues
IVG certificate replaces site incoming inspection and reduces documentation burden on project

Bridge abutment under construction with a geosynthetic drainage composite installed along its vertical face.

To the application:

Civil engineering Groundwater protection

Tunnel construction
- Tunnel lining drainage between rock face and concrete lining
- Cut-and-cover tunnel wall drainage behind waterproofing membrane
Railway engineering
- Building drainage per WAS 7 regulations
- Structural drainage according German RiZ-ING, ZTV E
Mining
- Tailings storage facility slope drainage below sealing system
- Secondary containment drainage between liner and backfill
Hydraulic engineering
- Drainage of dykes and embankments: pore water pressure control
- Reservoir and dam drainage within embankment cross-sections
Sports and recreation
- Artificial turf field drainage under sports surfaces
- Playground drainage beneath impact-absorbing surfaces
Green roofs and podium gardens
- Drainage and water retention under growing medium
- Single-sided variant for podium and green roof systems

Technical properties

Property	Unit	Secudrain^® 131 C WD 401 131 C	Secudrain^® 201 WD 601 201	Secudrain^® RZ 331 WDZ 701 RZ 201	Secudrain^® WAS 7
Product build-up
Raw material	—	Polypropylene (virgin PP)	Polypropylene (virgin PP)	Polypropylene (PP)	Polypropylene (PP)
Structure	—	Three-layer, three-dimensional, filter-stable and pressure-stable drainage system	Three-layer, three-dimensional, filter-stable and pressure-stable drainage system	Three-layer, three-dimensional, filter-stable and pressure-stable drainage system	Three-layer, three-dimensional, filter-stable and pressure-stable drainage system
Drainage core	—	Corrugated random mesh	Corrugated random mesh	Corrugated random mesh	Corrugated random mesh
Filter layers	—	Mechanically bonded and calendered nonwoven, both sides, full surface	Mechanically bonded and calendered nonwoven, both sides, full surface	Mechanically bonded nonwoven, both sides, full surface	Mechanically bonded and calendered nonwoven, both sides, full surface
Bond between filter and core	—	Positive connection, e.g. welded, to ensure shear force transmission	Positive connection, e.g. welded, to ensure shear force transmission	Positive connection, e.g. welded, to ensure shear force transmission	Positive connection, e.g. welded, to ensure shear force transmission
Property	Unit	Secudrain^® 131 C WD 401 131 C	Secudrain^® 201 WD 601 201	Secudrain^® RZ 331 WDZ 701 RZ 201	Secudrain^® WAS 7
Dimensions and mass
Product thickness at 2 kPa	mm	≥ 6.5	≥ 11.5	≥ 10.5	≥ 6.0
Mass per unit area (geocomposite)	g/m²	≥ 660	≥ 900	≥ 1,110	≥ 660
Roll width x length	m	3.80 x 35	1.90 / 3.80 x 35	3.80 x 40	1.90 x 35
Roll diameter	m	—	—	0.80	—
Roll weight	kg	—	—	195	—
Property	Unit	Secudrain^® 131 C WD 401 131 C	Secudrain^® 201 WD 601 201	Secudrain^® RZ 331 WDZ 701 RZ 201	Secudrain^® WAS 7
Hydraulic properties
Characteristic opening size of filter nonwoven	mm	0.09	0.12	0.09 / 0.12	0.09
Flow direction configuration	—	h/h	h/h	h/h	h/w
Flow capacity q, md at 20 kPa, i = 1.0	l/(m·s)	1.0	1.5	1.3	0.8
Flow capacity q, md at 50 kPa, i = 1.0	l/(m·s)	0.9	1.0	—	0.6
Flow capacity q, md at 20 kPa, i = 0.3	l/(m·s)	—	—	0.6	—
Property	Unit	Secudrain^® 131 C WD 401 131 C	Secudrain^® 201 WD 601 201	Secudrain^® RZ 331 WDZ 701 RZ 201	Secudrain^® WAS 7
Flow capacity q, md at 20 kPa, i = 0.1	l/(m·s)	—	—	0.3	—
Mechanical properties
Tensile strength md / cmd (geocomposite)	kN/m	—	—	≥ 18.0 / ≥ 28.0	—
Static puncture of filter nonwovens	kN	—	—	≥ 3.5 / ≥ 1.5	—
Approval, certification and durability
BAM approval	—	—	—	08/BAM 4.3/02/14	—
Property	Unit	Secudrain^® 131 C WD 401 131 C	Secudrain^® 201 WD 601 201	Secudrain^® RZ 331 WDZ 701 RZ 201	Secudrain^® WAS 7
CE marking	—	Yes	Yes	Yes	Yes
Further certification	—	DIN 18200, EN ISO 9001:2015, IVG certificate, product group EPD	DIN 18200, EN ISO 9001:2015, product group EPD	DIN 18200, EN ISO 9001:2015, BAM marking, product group EPD	DIN 18200, EN ISO 9001, IVG certificate, product group EPD
Durability (Annex B), use without reinforcement function, natural soils pH 4–9, soil temperature < 25 °C	years	≥ 100	≥ 100	≥ 100	≥ 100

Exemplary cross-sectional visualization of Secudrain® a drainage geocomposite with a three-dimensional drainage core between two nonwoven geotextiles. Water passes through the sand layer into the drainage core and is conveyed efficiently through the structure. — Exemplary illustration: Cross-sectional representation of Secudrain^® demonstrating its combined filtration and drainage functions. The nonwoven geotextile retains soil particles, while water enters the open drainage core and is conveyed through the geocomposite.

Drainage geocomposite vs. gravel drainage: flow capacity under load matters

Secudrain^® is a drainage geocomposite engineered to maintain hydraulic performance under compressive stress. This distinction is critical for engineers specifying drainage in buried applications.

Conventional mineral gravel is often specified at 200 to 400 mm thick. It provides high initial flow capacity. However, under sustained loading, fines migration and particle rearrangement reduce the effective void ratio. Secudrain^® eliminates this risk through geometry.

The wave-extruded PP monofilament core maintains a void ratio of at least 95 percent. The wave profile distributes compressive stress across the structure. Laboratory pressure-creep tests demonstrate that Secudrain^® WD retains its flow capacity after long-term loading. No special reduction factors are required in drainage calculations.

At 20 kPa confining stress, the flow capacity of Secudrain^® 131 C WD 401 131 C is 1.0 l/(m x s) at hydraulic gradient i=1.0 (DIN EN ISO 12958). At 50 kPa, it remains 0.9 l/(m x s). The heavier 201 grade delivers 1.5 l/(m x s) at 20 kPa. These values are declared performance parameters, confirmed through third-party testing under DIN 18200.

The flow capacity of Secudrain^® is determined for the expected confining stress using pressure-creep curves. This enables accurate drainage design without conservative over-specification. Secudrain^® drainage geocomposites replace both the mineral drainage layer and the filter geotextile in a single installation step.

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Secudrain^® drainage projects: landfill, infrastructure and sports field case studies

Reinforced earthwork embankments for a watercourse realignment
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Frequently asked questions

Secudrain^® is a drainage geocomposite for leachate collection, groundwater protection and building drainage. It consists of a wave-extruded PP monofilament drainage core bonded to one or two Secutex^® nonwoven filter layers. The core channels water in-plane. The nonwoven prevents clogging. It replaces conventional gravel drainage layers of 20 to 40 cm thickness.

Secudrain^® is priced per m² covered area. Exact pricing depends on the project volume, variant and delivery destination. Contact Naue directly for a project-specific quotation. Include the drainage area, required variant and project timeline in your enquiry. Request your project via the contact form below.

Secudrain^® is a drainage geocomposite: it drains water in-plane through a structured core plus provides filtration via the nonwoven layer. Secutex^® is a nonwoven geotextile: it provides separation, filtration and protection but has no in-plane drainage function. Use Secudrain^® wherever lateral water movement is required.

Secudrain^® 131 C WD 401 131 C (6.5 mm, flow 1.0 l/m x s at 20 kPa) is standard for most landfill capping and groundwater protection applications. Secudrain^® 201 WD 601 201 (11.5 mm, flow 1.5 l/m x s at 20 kPa) is used where higher flow capacity or mass per unit area is required. Select based on hydraulic design and confining stress e.g. MTSE based solutions.

A thick geocomposite that compresses under load loses drainage capacity over time. Secudrain^® uses a wave-profile PP core that maintains at least 95 percent void ratio under 50 kPa confining stress. The flow capacity at 50 kPa remains 0.9 l/(m x s) for the WD 131 C grade. Pressure-creep curves allow accurate design without conservative safety factors. This is the key differentiator versus conventional mineral drainage.

10,000 m² of Secudrain^® replaces the extraction, transport and installation of approximately 3,000 m³ of granular drainage material. This reduces lorry movements, earthworks volume and site time. The EPD-verified CO₂-eq for the average Secudrain^® product is 2.20 kg CO₂-eq/m² (A1-A3, avg 819 g/m²). Naue holds ISO 14001 Environmental Management and ISO 50001 Energy Management certifications.

Secudrain^® holds several labels, because durability is most important in the function of drainage, so it has CE marking, DIN 18200 internal and external monitoring, ISO 9001, ISO 14001, ISO 50001, an EPD, IVG certificate (replaces site incoming inspection) and a 100-year durability declaration per EN 13249 Annex B. The RZ 331 grade additionally carries BAM approval required for German DepV landfill engineering.

Yes. Naue holds a product group EPD for Secudrain^® drainage elements. The EPD is a cradle-to-grave declaration prepared per EN 15804:2012+A2:2019. The declared unit is 1 m² at average 819 g/m².

Secudrain^® is made from 100 % high quality virgin polypropylene. PP resists naturally occurring soil chemicals, soil micro-organisms and UV radiation (within the one-month cover requirement). The thermally bonded nonwoven layers are calendered and welded to the core. This bond withstands installation loads including foot traffic and panel overlapping. Rolls must be covered within one month of installation.

Standard roll dimensions: 1,90 m or 3,8 m width. Rolls also available up to 70 m length and up to 6 m width for special projects.

Secudrain^® is tested to: DIN EN ISO 9863-1 (thickness), DIN EN ISO 9864 (mass per unit area), DIN EN ISO 12956 (characteristic opening size), DIN EN ISO 12958 (flow capacity), DIN EN ISO 10319 (tensile strength, RZ grade), DIN EN ISO 12236 (static puncture, RZ grade). CE marked per EN 13249ff:2016. German landfill use requires compliance with DepV and BAM documentation (RZ grade).

Yes. Naue provides technical planning support including drainage design, product selection, specific system proofs and specification text proposals. The Naue Portal includes a guided SolutionFinder and online calculators for selecting and designing project solutions. Visit the Naue Portal or submit the contact form below for any assistance.

Yes, for regulated German landfill engineering, use Secudrain^® RZ 331 WDZ 701 RZ 201 which carries BAM approval (08/BAM) required under DepV. For non-regulated capping systems in Germany and internationally, the WD series (131 C or 201 grade) can replace granular drainage. Select based on required flow capacity and hydraulic gradient. Provide pressure-creep curve data for design verification.

Secudrain^® WAS 7 is a drainage geocomposite approved per German Richtzeichnung WAS 7 for drainage of earth-contact structural elements. It is tested in h/w (wall/vertical) orientation: flow capacity 0.8 l/(m x s) at 20 kPa. Roll width 1.90 m enables vertical installation on wall and abutment faces. Approved per RiZ-ING (ZTV E) for bridge structures (e.g. B51 Wolbecker Road junction bridge, Münster). IVG certificate can replace site incoming inspection.