Manufacturer of fire protection systems for passive structural fire protection – coatings for steel, wood, concrete and cables.
Rudolf Hensel GmbH
Börnsen near Hamburg, DENew on Amplifa
About Rudolf Hensel
Rudolf Hensel GmbH was founded in 1922 as a paint and varnish factory and is today an independent manufacturer of fire protection systems for passive structural fire protection, headquartered in Börnsen near Hamburg. The product portfolio includes, under the brands HENSOTHERM® and HENSOMASTIK®, fire protection coatings for steel and steel tension members, timber components, concrete and reinforced concrete components, cables, as well as combined bulkhead systems for wall and ceiling penetrations and systems for fire-resistant joints. The products are tested according to the European Standard (EN) and approved throughout Europe (ETA, aBG) as well as internationally (VKF, BS 476, UL 263, GOST). The development focus is on water-based, maintenance-free systems of the Green Product Line, which are VOC-free and meet requirements according to LEED v4, AgBB and EPD. In addition to product development, the company offers technical consulting, training, bill of materials evaluation, material requirement calculation and support with expert reports and cost estimation. Areas of application include aviation, shipping, rail transport, power plant construction, renewable energies, modular construction, automotive and e-mobility as well as structural and civil engineering.
- Site
- Börnsen
- Processes
- HENSOTHERM® steel fire protection (fire protection coating for steel), HENSOTHERM® steel fire protection for steel tension members (circular solid profiles/circular, HENSOTHERM® wood fire protection (fire protection coating for timber components, interior and, Fire protection systems for concrete components up to R240 (HENSOTHERM® 820 KS, HENSOMASTIK® B 3000), Cable fire protection systems (HENSOTHERM® coatings for cables), HENSOMASTIK® combined bulkhead systems (wall and ceiling penetrations, indoor and outdoor areas), Fire protection coatings for fire-resistant joints (perimeter, wall and ceiling joints), Technical consulting and training on structural fire protection (bill of materials evaluation,
- Materials
- Steel, Wood, Concrete, Reinforced concrete, Aerated concrete, Sand-lime brick, Masonry, Cables
- Certificates
- EN testing / ETA / aBG, VKF / BS 476 / UL 263 / GOST, LEED v4 / AgBB / EPD
- Founded
- 1922
- Industries
- Aviation, Shipping, Rail transport, Power plant construction, Renewable energies, Modular construction
- 01
Development of the fire protection systems
- 02
Production of the coatings
- 03
Technical consulting and training
- 04
Recommendation of certified coating contractors
- 05
Application on the component
- 06
Testing and approval according to EN/ETA
Products & Materials
Steel
HENSOTHERM® steel fire protection systems protect steel structures and steel tension members in the event of fire.
Wood
Fire protection coatings upgrade timber components, inside and outside, to flame-retardant building material class B1.
Concrete/Reinforced concrete
Systems such as HENSOTHERM® 820 KS replace missing concrete cover during refurbishment up to fire resistance R240.
Cables
Flexible coatings inhibit flame propagation along cables as an alternative to cable ducts.
Aerated concrete, sand-lime brick, masonry
Fire protection coatings seal fire-resistant perimeter, wall and ceiling joints.
Locations
Börnsen
DEHeadquarters
Fire Protection Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| HENSOTHERM® steel fire protection (fire protection coating for steel)Surface | – | – | – | – | Steel |
| HENSOTHERM® steel fire protection for steel tension members (circular solid profiles/circularSurface | – | – | – | – | Steel |
| HENSOTHERM® wood fire protection (fire protection coating for timber components, interior andSurface | – | – | – | – | Wood |
| Fire protection systems for concrete components up to R240 (HENSOTHERM® 820 KS, HENSOMASTIK® B 3000)Surface | – | – | – | – | Concrete, Reinforced concrete |
| Cable fire protection systems (HENSOTHERM® coatings for cables)Surface | – | – | – | – | Cables |
| HENSOMASTIK® combined bulkhead systems (wall and ceiling penetrations, indoor and outdoor areas)Surface | – | – | – | – | Steel, Wood, Concrete, Reinforced concrete, Cables, Aerated concrete, Sand-lime brick, Masonry |
| Fire protection coatings for fire-resistant joints (perimeter, wall and ceiling joints)Surface | – | – | – | – | Aerated concrete, Concrete, Reinforced concrete, Sand-lime brick, Masonry |
| Technical consulting and training on structural fire protection (bill of materials evaluation,Engineering | – | – | – | – | – |
Additional services
Quality & Approvals
The HENSOTHERM® and HENSOMASTIK® systems are assessed according to the European Standard (EN) and approved throughout Europe (ETA, aBG) as well as internationally (VKF, BS 476, UL 263, GOST); the water-based products are VOC-free, AgBB-tested (VOC emission class A+), declared with EPD Type III and registered in the DGNB Navigator.
| Evidence | Börnsen |
|---|---|
| EN testing / ETA / aBG | |
| VKF / BS 476 / UL 263 / GOST | |
| LEED v4 / AgBB / EPD |
History
- 1922
Founded as a paint and varnish factory; today an independent, globally leading manufacturer of fire protection systems for passive structural fire protection
- 2024
Recognised as an excellent R&D partner for industry
- 2025
Launch of the Rudolf Hensel Navigator app for iOS and Android
- 2026
Publication of the 2025/2026 trade fair schedule