
Specialist company for building waterproofing, damp-proofing of masonry and mould remediation in the Husum area
Abdichtungstechnik Petersen GmbH & Co. KG
Liebigstr. 7-9, 25813 HusumNew on Amplifa
About the specialist company
Abdichtungstechnik Petersen GmbH & Co. KG is a regional specialist company of the ISOTEC group based in Husum (Liebigstr. 7-9), specialising in the remediation of moisture and mould damage to buildings. Its service portfolio includes horizontal damp-proof barriers by paraffin injection against rising damp, exterior and interior waterproofing, crack injection for crack widths greater than 0.2 mm, and the Flexband system for moving cracks and joints. The company also offers renovation plaster, mould removal, interior insulation, climate boards, cellar floor and balcony renovation, cellar ceiling insulation, plinth waterproofing, garage renovation, as well as moisture analysis and building drying. The building materials worked on are primarily masonry and concrete; the waterproofing materials used include special paraffin, multi-layer waterproofing systems, renovation plaster and liquid plastics. Customers come from building renovation, housing management, hotel and commercial construction in North Frisia and adjoining regions of Schleswig-Holstein. Owner Kai Petersen holds a TÜV Rheinland-certified qualification as a specialist consultant for building moisture damage.
- Site
- Husum
- Processes
- Horizontal damp-proof barrier (paraffin injection against rising damp), Exterior waterproofing (multi-layer, ground-contact area), Interior waterproofing, Crack injection (cracks in concrete components with crack widths > 0.2 mm), Flexband system (waterproofing of moving cracks and joints with special tape), Renovation plaster (salt-regulating base plaster), Mould removal / mould remediation, Interior insulation / ISOTEC interior insulation system
- Materials
- Concrete, Masonry, Special paraffin (injection agent for horizontal damp-proof barrier), Renovation plaster, Liquid plastic, Special paraffin (injection agent)
- Certificates
- Customer satisfaction 2025, Customer satisfaction 2024, Customer satisfaction 2023, Customer satisfaction 2022, Customer satisfaction 2021, Customer satisfaction 2020, Customer satisfaction 2019, Customer satisfaction 2018, Customer satisfaction 2017, Specialist consultant for building moisture damage (TÜV Rheinland certified, TÜV Rheinland certified qualification (specialist consultant for building, 10 years warranty on selected services, ISOTEC group customer satisfaction award (2017–2025)
- Industries
- Building renovation, Housing management, Hotels, Commercial construction
- 01
Enquiry and appointment scheduling
- 02
On-site moisture/damage analysis
- 03
Preparation of the renovation proposal
- 04
Execution of the renovation measures
- 05
Acceptance and warranty (10 years on selected services)
Materials and processes
Special paraffin (injection agent)
Injected into dried masonry as part of the horizontal damp-proof barrier and stops capillary water transport.
Masonry
Main building material for horizontal damp-proof barriers, interior waterproofing, renovation plaster and interior insulation.
Concrete
Base material for crack injection, balcony renovation, cellar floor and garage renovation.
Renovation plaster
Salt-regulating base plaster that absorbs building-damaging salts and allows moisture to diffuse.
Liquid plastic
Liquid-applied waterproofing material for ground-contact and cracked components.
Site

Husum
DESpecialist company for moisture and mould remediation
- Materials
- Masonry, concrete, special paraffin, renovation plaster, liquid plastic
Service areas




Inside the production









Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Horizontal damp-proof barrier (paraffin injection against rising damp)Surface | – | – | – | – | Masonry, Concrete |
| Exterior waterproofing (multi-layer, ground-contact area)Surface | – | – | – | – | Concrete, Masonry |
| Interior waterproofingSurface | – | – | – | – | Masonry, Concrete |
| Crack injection (cracks in concrete components with crack widths > 0.2 mm)Surface | – | – | – | – | Concrete |
| Flexband system (waterproofing of moving cracks and joints with special tape)Joining | – | – | – | – | Concrete |
| Renovation plaster (salt-regulating base plaster)Surface | – | – | – | – | Masonry |
| Mould removal / mould remediationSurface | – | – | – | – | Masonry, Plaster |
| Interior insulation / ISOTEC interior insulation systemSurface | – | – | – | – | Masonry |
| Climate board (indoor-climate-regulating board)Surface | – | – | – | – | Masonry |
| Cellar floor renovationSurface | – | – | – | – | Concrete, Masonry |
| Balcony renovation (waterproofing of balcony/terrace surfaces with surface systems)Surface | – | – | – | – | Concrete |
| Cellar ceiling insulationSurface | – | – | – | – | Concrete |
| Plinth waterproofing / wall-slab waterproofing / wall-slab connectionSurface | – | – | – | – | Concrete, Masonry |
| Garage renovationSurface | – | – | – | – | Concrete |
| ISOTEC liquid plastic (liquid plastic waterproofing)Surface | – | – | – | – | Concrete |
| Drying system / building drying / structural drying (e.g. after pipe bursts)Engineering | – | – | – | – | Masonry, Concrete |
| Moisture analysis / damage analysisTesting | – | – | – | – | Masonry, Concrete |
Additional services
Quality and awards
The specialist company works with the proven systems of the ISOTEC group and offers 10 years of warranty on selected services as well as fixed prices. Owner Kai Petersen is a TÜV Rheinland-certified specialist consultant for building moisture damage; customer satisfaction has been awarded annually by the ISOTEC group since 2017.
| Evidence | Husum |
|---|---|
| TÜV Rheinland certified qualification (specialist consultant for building | |
| 10 years warranty on selected services | |
| ISOTEC group customer satisfaction award (2017–2025) |