G Quadrat Gmbh

What G Quadrat Gmbh does

G quadrat GmbH is a privately held German specialist contractor and materials provider for geosynthetic environmental sealing, founded in August 2000 and headquartered in Krefeld. The company designs, supplies, and installs plastic sealing membranes (PEHD, PEVLD, FPO), bentonite mats, drainage mats, geogrids, plastic sheet piling, and patented mineral sealing systems, most notably TRISOPLAST® — a polymer-modified mineral material with a documented service life exceeding 100 years and an 8–10 cm layer thickness versus roughly 50 cm in conventional mineral systems. Proprietary manufactured products include the DuoLiner (produced at the Niemegk plant), the DuoFill® high-thermal-conductivity backfill for underground high-voltage cables, and the DuoLock® plastic sheet piling line.

G quadrat holds exclusive German distribution rights for TRISOPLAST® (since 2011), AGRU Kunststofftechnik sealing sheets (since 2001), Profextru Prolock sheet piling (since 2018), and Freudenberg BAM drain mats (since 2024). It carries the DIBt general technical approval Z-65.30-509 for double-layer tank lining with vacuum leak monitoring compliant with WHG and AwSV, and is certified to DIN ISO 9001 and DIN ISO 14001 (latter added in 2025). Installation is executed by DVS-certified welders using a mix of in-house teams (consolidated via the 2025 merger of subsidiary G quadrat Solutions GmbH) and certified partner firms.

Revenue is generated from one-time product sales (proprietary and distributed geosynthetics), turnkey installation services, and engineering consulting covering project planning through final acceptance. Customers are spread across landfill operators, industrial and agricultural tank operators (biogas, slurry, refineries), renewable energy and thermal storage developers, municipal utilities and pipeline network operators, logistics warehouse developers, and swimming pool/pond installers. Operations span Germany from offices in Krefeld, Niemegk, Oranienbaum-Wörlitz, and Grünhain-Beierfeld. The company is family-influenced (Managing Director Gabriele Albers; previously Klaus H. Albers until 2021) with Dr. Jan Schröder joining as co-Managing Director in 2020.

Name

G Quadrat Gmbh

Legal name

G quadrat GmbH

Website

https://gquadrat.de

Company type

Private

Founded year

2000

Operating status

Operating

Short description

G quadrat GmbH is a German specialty contractor and exclusive distributor that designs, supplies, and installs geosynthetic sealing systems — plastic membranes, mineral sealing materials, sheet piling, and drainage products — for landfill, tank, energy, utility, and infrastructure clients across Germany.

Ownership category

akta.pro rank

Product category

Geosynthetics & Environmental Protection Systems

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991), Plastics Packaging Film and Sheet (including Laminated) Manufacturing (326112)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Plastic Material, Synth Resin/Rubber, Cellulos (No Glass) (2820)

akta.pro primary industry

Air Sealing Membranes, Tapes & Gaskets (Air Barriers) (IMADAGAI)

akta.pro secondary industries

Rubber Linings, Coatings & Corrosion Protection (Tanks, Pipes, Chutes) (IMANALAH), Multilayer Laminates & Composite Structures (Solvent/Water/Extrusion Laminated) (IMALABAD)

Keywords

• Geosynthetic sealing systems
• Environmental protection solutions
• Landfill containment systems
• Underground pipeline protection
• Mineral sealing materials

Headquarters

HQ city

Krefeld

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Geosynthetic Product Sales: Sale of proprietary and distributed geosynthetic products including plastic sealing membranes, DuoLiner, DuoFill®, TRISOPLAST®, sheet piling, geotextiles, drainage mats, bentonite mats, and geogrids. Products are sold directly and through exclusive distribution partnerships.
2. Installation and Project Execution: Turnkey installation services for geosynthetic sealing systems delivered through the company's own subsidiary (DuBA GmbH, founded 2009) and certified partner installation firms. Covers planning, material supply, and professional installation (DVS-certified welders).
3. Engineering Consulting and Planning: Consulting services for project developers, general contractors, engineering firms, and municipalities covering technical feasibility, chemical classification, regulatory compliance (WHG, AwSV), and cost-optimized project execution from first idea to final acceptance.
4. TRISOPLAST® Distribution (Germany): Exclusive distribution of TRISOPLAST® mineral sealing material in Germany since 2011, a patented polymer-modified mineral sealing product.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

G Quadrat GmbH designs, supplies, and installs geosynthetic sealing membranes (Kunststoffdichtungsbahnen), mineral-based sealing systems (TRISOPLAST®), plastic sheet piling, drainage mats, bentonite mats, geogrids, and proprietary products (DuoLiner, DuoFill®, DuoLock®, EcoKlett-System) for landfill construction, groundwater protection, industrial tank sealing, underground cable/pipeline protection, thermal energy storage, moor rewetting, and swimming pool lining. The company combines its own manufactured products with exclusive German distribution rights for AGRU, Profextru, and Freudenberg product lines, delivering turnkey environmental protection systems from planning through DVS-certified installation.

Product overview

G Quadrat GmbH offers a comprehensive portfolio of geosynthetic products and sealing solutions for environmental protection, civil engineering, and infrastructure applications. The core product range includes plastic sealing membranes (Kunststoffdichtungsbahn), proprietary DuoLiner and DuoFill® products, patented TRISOPLAST® mineral sealing material, plastic sheet piles, drainage mats, bentonite mats, geogrids, pool/pond membranes, and nonwoven fabrics. These materials are complemented by complete system solutions such as the EcoKlett-System for sprinkler tanks, DIBt-approved container sealing, and specialized sealing for renewable energy storage. The company combines its own manufactured products with exclusive distribution partnerships for complementary products like AGRU sealing membranes, Prolock sheet piles, and BAM drainage mats to provide comprehensive solutions for landfill construction, groundwater protection, cable route protection, and environmental sealing applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Kunststoffdichtungsbahn (Plastic Sealing Membranes) Plastic sealing membranes produced from various raw materials (PEHD, PEVLD) by melting granulate and extruding through a die. Used for waterproofing of landfill cells, tanks, halls, and civil engineering works; sold to landfill operators, contractors, and engineering firms.
• DuoLiner Own manufactured product line produced at the Niemegk facility, consisting of double-spacer fabric filled with mineral substances through a special manufacturing process. Used as a sealing and drainage layer in environmental protection applications.
• DuoFill® High-performance backfill material for underground high-voltage cable routes featuring a special mineralogy and grain size band that delivers very high thermal conductivity for efficient heat dissipation from power cables. Used by utility companies and infrastructure contractors.
• TRISOPLAST® Patented polymer-modified mineral sealing material composed of mineral aggregates, water, and a bentonite polymer component. Achieves only 8–10 cm layer thickness versus conventional systems, with proven lifespan exceeding 100 years. Used in landfill lining, tank field remediation, canal sealing, and groundwater protection.
• Kunststoffspundwand (Plastic Sheet Piles) Plastic sheet piles used in civil engineering, including Prolock sheet piling made from recycled plastic for sustainable long-term, maintenance-free dike and shore protection and moor rewetting projects. Sold to municipalities, water authorities, and environmental organizations.
• Dränmatten (Drainage Mats) Geosynthetic composite drainage mats with excellent drainage capacity even at low gradients, supplied by Freudenberg under exclusive German distribution. Used in bridge abutment walls, tunnels, road construction, and landfill applications; also functions as gas drainage mats.
• Bentonitmatten (Geosynthetic Clay Liners) Geosynthetic clay liners (GTD) consisting of two geotextile layers filled with bentonite powder for waterproofing applications in landfill construction, pond sealing, and groundwater protection.
• Geogitter (Geogrids) Grid structures made from synthetic fibers, yarns, or plastics with various node connections and opening widths over 10 mm. Used to increase the load-bearing capacity of earthworks in civil engineering applications.
• Pool- und Teichbahnen (Swimming Pool and Pond Membranes) RELAX and Agruflex FPO-based (flexible polyolefin) swimming pool and pond liners free from plasticizers, available in 1.3–1.8 mm thicknesses and multiple colors (azur blue, light blue, grey, anthracite, sand, white, black, RAL 6001/6020). Sold to municipalities for pool renovation and private customers for garden ponds.
• Vliesstoffe (Nonwoven Fabrics) Nonwoven fabrics produced by solidifying endless or staple fibers, supplied in area weights from 150 g/m² to 3,000 g/m². Used as filter, separation, or protection layers in construction.
• EcoKlett-System (Sprinkler Tank Sealing System) Complete proprietary sealing system for sprinkler tanks developed by G Quadrat for waterproofing membrane seams, connection flanges, pipe penetrations, and mounting plates. Conforms to VdS Guideline CEA 4001 2021-01 (07) and DIN 18535-2.
• HGS (Hydraulisch gebundene Schutzbahn / Concrete on a Roll) A 2 cm thick hydraulically bound protective layer ('concrete on a roll') for protecting underground power and gas lines from mechanical damage, road traffic, and root penetration. Quick and cost-effective to install with conventional excavators.
• DIBt-approved Double-Layer Tank Lining with Vacuum Testing Double-layer leak protection lining with continuous vacuum leak monitoring for steel concrete and steel containers, providing 100% guaranteed watertightness. Complies with Water Management Act (WHG) and AwSV; DIBt approval Z-65.30-509.
• Pit Thermal Energy Storage (PTES) Sealing Sealing concepts for pit thermal energy storage (PTES) using high-temperature-resistant PE-HTR or PP-HTR plastic membranes, enabling operating temperatures up to 95°C and system lifetimes exceeding 20 years.
• WHG-compliant Hall Floor Sealing HDPE sealing membrane solutions with DIBt building authority approval for warehouse floor sealing in logistics facilities storing water-hazardous substances. Compliant with WHG and AwSV regulations for environmental liability protection.
• Installation and Project Execution Services Turnkey installation services for geosynthetic sealing systems delivered through the company's own installation capability (formerly DuBA GmbH) and certified partner installation firms. Covers planning, material supply, and professional installation by DVS-certified plastic welders across Germany.
• Engineering Consulting and Planning Services Consulting services for project developers, general contractors, engineering firms, and municipalities covering technical feasibility, chemical classification, regulatory compliance (WHG, AwSV), and cost-optimized project execution from first idea to final acceptance.

Quantifiable outcome

• TRISOPLAST® layer thickness of only 8-10 cm vs conventional systems, saving thousands of truck loads of material per project
• +4 more outcomes

Segments7 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Three partnerships are on record, tiered minor and core.

• FreudenbergminorChannel Partner/ Reseller/ Distributor · 1 January 2024Exclusive distribution partner for BAM drain mats in Germany since 2024. Freudenberg supplies high-performance drainage mats for geosynthetic applications in bridge abutment walls, tunnels, road and landfill construction.
• ProfextrucoreChannel Partner/ Reseller/ Distributor · 1 January 2018Exclusive distribution partnership for Prolock sheet piling walls in Germany since 2018. Prolock-Spundwände (sheet piling) are made from recycled plastic and feature an environmental safety certificate, used for long-term, maintenance-free dike and shore protection as well as moor rewetting projects.
• AGRU KunststofftechnikcoreChannel Partner/ Reseller/ Distributor · 1 January 2001Partnership established in 2001 for exclusive distribution of AGRU Kunststofftechnik sealing sheets in Germany. G quadrat also entered the swimming pool business in 2013 through exclusive distribution of PVC-free RELAX pool membranes from AGRU. AGRU's high-temperature-resistant PP-HTR membrane (for 95°C applications) is a key technology for G quadrat's thermal energy storage solutions.

Scale indicators4 records

Recent moves27 records

Expansion highlights6 records

Emerging players

• Profextru Kunststoffe GmbH: German producer of recycled-plastic Prolock sheet piling, distributed exclusively in Germany by G quadrat since 2018. A specialized competitor/supplier for plastic sheet piling used in shoreline and dike protection.
• TRISOPLAST International GmbH: Austrian licensor and producer of the TRISOPLAST® patented mineral sealing material, whose German distribution rights are held exclusively by G quadrat since 2011. Conceptually adjacent — TRISOPLAST could in principle revoke or modify the distribution arrangement.
• Freudenberg Performance Materials: German industrial group supplying BAM drainage mats under the 2024 exclusive distribution partnership with G quadrat. While currently a partner, Freudenberg's broader portfolio in technical textiles creates potential channel overlap in adjacent geosynthetic drainage segments.

Direct peers

• NAUE GmbH & Co. KG: One of Germany's largest geosynthetics manufacturers and system providers (sealing systems, geotextiles, erosion protection). Directly competes with G quadrat in landfill sealing, groundwater protection, and civil engineering containment across Germany and internationally.
• HUESKER Synthetic GmbH: German-headquartered global manufacturer of geosynthetics including geogrids, geotextiles, and sealing composites. Overlaps with G quadrat in earthwork reinforcement, landfill construction, and environmental engineering applications.
• Beco Bermüller & Co. GmbH: German geosynthetics specialist distributing geomembranes, geotextiles, and bentonite mats for landfill, tunnel, and civil engineering applications. Direct competitor to G quadrat across Germany with overlapping product categories and customer base.

Broad incumbents

• GSE Environmental (a Solmax brand): Major international manufacturer of HDPE and LLDPE geomembranes used in landfill liners, mining heap leach pads, and containment. Overlaps with G quadrat's core sealing-membrane offerings in environmental containment applications.
• Solmax (formerly TenCate Geosynthetics): Global geosynthetics manufacturer with a broad portfolio of geomembranes, geotextiles, and geosynthetic clay liners. Competes in large-scale landfill and mining containment projects, including in the German and broader European markets.
• AGRU Kunststofftechnik GmbH: Austrian manufacturer of plastic sealing sheets (HDPE, PP, FPO), pipes, and geomembranes. While a supply partner to G quadrat since 2001, AGRU's direct sales channel in adjacent German accounts (and beyond) makes it both a partner and a competitor for end-customer relationships.
• Maccaferri Deutschland GmbH: Subsidiary of the Italian Officine Maccaferri group, offering geotechnical and environmental solutions including geosynthetics, retaining structures, and erosion protection. Competes with G quadrat in civil engineering and environmental containment projects in Germany.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

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Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about G Quadrat Gmbh