Abdichtungstechnik

What Abdichtungstechnik does

Abdichtungstechnik Groß GmbH, operating under the brand ISOTEC Ahrensburg, is a privately held German specialty contractor that delivers moisture-damage remediation and waterproofing services to residential and small commercial property owners in the Hamburg metropolitan region (Ahrensburg, Bad Oldesloe, Lübeck, Hamburg-Bergedorf, Reinbek, and surrounding communities). The company is one of approximately 85 regional specialist companies (Fachbetriebe) within the ISOTEC-Gruppe franchise network, which collectively spans around 150 locations and 1,200 employees across Germany. The Ahrensburg branch itself employs roughly 14 on-site staff plus 4 additional roles, led by Managing Director Jan Henrik Groß, with a named team covering Vertrieb (sales), Assistenz (office coordination), Bauleitung (construction management), and trained technical staff.

The service catalog covers interior and exterior waterproofing, horizontal barriers against rising damp, crack injection using the proprietary ISOTEC Flexband system, ISOTEC-Klimaplatte climate panels, mold remediation, balcony and terrace renovation, basement floor and ceiling renovation, interior insulation, and technical drying. All work is performed by ISOTEC-trained technicians and is backed by TÜV-Rheinland certification and a 10-year warranty, with many projects offered at a fixed price (Festpreis). Revenue is generated through one-time project engagements priced after on-site damage analysis; the company does not appear to operate subscription, licensing, or recurring-contract models.

Customer acquisition runs through a direct-to-consumer and local field-sales model: prospects reach the company via the ISOTEC website (which features an interactive Schadensanalyse damage-analysis wizard), regional SEO, and a published phone line operating Monday–Friday 7:00–20:00. Lead-to-project conversion is handled through on-site inspection, a tailored remediation proposal, and execution by the in-house technician team. The company carries no app, no public API, no disclosed digital product line, and no AI/ML capabilities in either customer-facing or operational workflows.

Name

Abdichtungstechnik

Legal name

Abdichtungstechnik Groß GmbH

Website

https://abdichtungstechnik-lueth.de

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Abdichtungstechnik Groß GmbH is a German waterproofing and mold remediation franchise specialist delivering interior/exterior sealing, climate panel, and balcony renovation services to residential property owners in the Hamburg metropolitan region under the ISOTEC brand.

Ownership category

akta.pro rank

Product category

Building Waterproofing and Restoration Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (23822), Plumbing, Heating, and Air-Conditioning Contractors (238220), Remediation Services (562910)

akta.pro primary industry

Structural Drying, Dehumidification & Moisture Control (HSAPAOAB)

akta.pro secondary industries

Building Envelope & Weatherproofing (Roofing/Waterproofing/Gutters) (IMAIABAG), Exterior Insulation & Weatherproofing (House Wrap, Air/Water Barriers) (HSAPAKAK), Smoke, Soot & Odor Remediation (HSAPAOAD)

Keywords

• Building waterproofing services
• Mold remediation services
• Moisture damage repair
• Basement renovation services
• Balcony waterproofing

Headquarters

HQ city

Ahrensburg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Others

Revenue model

1. Waterproofing and Sealing Services: One-time professional services for interior and exterior waterproofing of buildings. Includes damage assessment, solution planning, and implementation. Services include horizontal barriers, crack injection, and comprehensive wall/floor sealing. Revenue recognized upon project completion.
2. Mold Remediation Services: Professional mold removal and remediation services for residential and commercial properties. Includes damage assessment, containment, removal, and prevention measures using specialized equipment and climate control systems.
3. Balcony and Terrace Renovation: Specialized renovation services for balconies and terraces including waterproofing, coating, and surface restoration. Addresses defective coatings and coverings that allow moisture penetration through cracks and gaps.
4. Drying Services: Technical drying services for buildings affected by water damage, flooding, or excessive moisture. Includes basement ceiling insulation and floor renovation services.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Abdichtungstechnik Groß GmbH delivers professional building waterproofing and moisture/mold damage remediation services for residential and commercial properties in the Ahrensburg region of Germany. Core services include interior and exterior waterproofing, horizontal moisture barriers, crack injection with the proprietary Flexband system, mold removal, climate panel installation, balcony and terrace renovation, basement floor and ceiling renovation, interior insulation, and technical drying. The company operates as a regional franchise (Fachbetrieb) of the ISOTEC group.

Product overview

ISOTEC (Abdichtungstechnik Groß GmbH) is a specialized waterproofing and building renovation service company operating as part of the ISOTEC group franchise network. The company offers a comprehensive suite of moisture-related remediation services including waterproofing (Abdichtungen), mold removal (Schimmelbeseitigung), climate panel installation (Klimaplatte), balcony renovation (Balkonsanierung), basement floor renovation (Kellerbodensanierung), basement ceiling insulation (Kellerdeckendämmung), interior insulation (Innendämmung), and drying services (Trocknung). The company operates as a network of regional specialist franchises with 150 locations and approximately 1,200 employees across 85 regional specialist operations. Services are delivered by trained technicians using proprietary ISOTEC methods and include damage analysis, solution consultation, and professional execution. The company differentiates through TÜV-Rheinland certification, a 10-year warranty, fixed-price offerings, and a systematic four-step process from initial inquiry through professional renovation completion.

Differentiator

Problem solved

Functional benefit

Products and services

• Waterproofing (Abdichtungen) Professional waterproofing services for buildings to prevent moisture ingress, including interior and exterior sealing solutions for walls, foundations, and critical wall-floor junctions. Targeted at homeowners and commercial property owners facing wet basements, damp walls, or water infiltration.
• Mold Remediation (Schimmelbeseitigung) Professional mold removal and remediation services for residential and commercial properties, including damage extent assessment, source identification, containment via enclosures and extraction equipment, and safe remediation of affected areas.
• Climate Panel (Klimaplatte) Specialized interior climate control panels that regulate humidity and prevent condensation and mold growth on interior walls. Installed by trained ISOTEC technicians for residential interiors suffering from dampness and mold.
• Balcony and Terrace Renovation (Balkonsanierung) Complete balcony and terrace waterproofing and renovation services, including surface coatings and sealing to prevent moisture penetration through defective coatings, cracks, and gaps into the building structure.
• Basement Floor Renovation (Kellerbodensanierung) Specialized renovation services for basement floors to address moisture issues and restore dry, usable living or storage conditions in below-grade spaces.
• Basement Ceiling Insulation (Kellerdeckendämmung) Ceiling insulation services for basements to improve energy efficiency and reduce heat loss between basement and the floor above.
• Interior Insulation (Innendämmung) Interior wall insulation solutions that improve thermal performance and prevent condensation and moisture damage from within, suitable where exterior insulation is not feasible.
• Drying Services (Trocknung) Professional technical drying services for buildings and structures affected by water damage, flooding, or excessive moisture, using specialized drying equipment.

Quantifiable outcome

• Customer satisfaction rating of 75 out of 100 in 2025

Named customers7 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• ISOTEC GruppecoreStrategic or Co-development PartnerAbdichtungstechnik Groß GmbH operates as a regional specialist company (Fachbetrieb) within the ISOTEC franchise network. The company benefits from the ISOTEC brand, proprietary methods and technologies, training programs, quality standards (including TÜV certification), and centralized marketing support while maintaining local operational autonomy.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Remmers GmbH: German building protection specialist offering waterproofing systems, restoration products, and applicator services for moisture and façade damage. Comparable to Abdichtungstechnik because it sells and services similar interior/exterior waterproofing, basement sealing, and moisture remediation use cases.
• ISOTEC GmbH (ISOTEC-Gruppe): National franchisor and brand owner of the ISOTEC network with 150 locations and approximately 1,200 employees across Germany. Directly comparable as the parent operating in the same waterproofing, mold remediation, and building protection service category, with this entity being one of its regional Fachbetriebe.
• Saint-Gobain Weber GmbH: Subsidiary of Saint-Gobain providing façade systems, waterproofing mortars, and building repair solutions across Germany. Comparable as a broad incumbent offering branded waterproofing and building envelope products and services that compete for the same contractors and end customers.
• Schomburg GmbH: German construction chemicals manufacturer and service provider for waterproofing, concrete repair, and building protection. Overlaps with Abdichtungstechnik in structural waterproofing, basement sealing, and restoration plaster/mortar product categories.
• Sto SE & Co. KGaA: Large German building envelope specialist offering façade, waterproofing, and restoration systems. Adjacent to Abdichtungstechnik's exterior waterproofing, insulation, and moisture remediation scope at the building envelope level.
• BOTAMENT GmbH (MC-Bauchemie): German manufacturer of construction chemical systems for waterproofing, tile installation, and building renovation. Operates in the same waterproofing and building protection space as Abdichtungstechnik, supplying applicators and end customers with comparable solutions.
• Brillux GmbH & Co. KG: German coatings and building protection manufacturer/service provider with renovation systems including mold protection and moisture-resistant coatings. Comparable on interior moisture, mold remediation, and restoration plaster use cases.

Others

• Hailo GmbH & Co. KG: Not directly a waterproofing peer; included as a regional German Mittelstand operator analogue with comparable size, private ownership, and direct-to-consumer service DNA in the building/renovation equipment category.

Direct peers

• Gutjahr Systemtechnik GmbH: German provider of balcony, terrace, and exterior drainage/waterproofing systems. Directly overlaps with Abdichtungstechnik's Balkonsanierung service line and serves the same residential property owners and trades.
• Wedi GmbH: German specialist in waterproof building boards, sealed shower systems, and substrate solutions for wet rooms. Comparable to Abdichtungstechnik on moisture management, interior waterproofing, and mold/condensation prevention in residential applications.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/abdichtungstechnik

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Abdichtungstechnik