
03/06/2026 -
The new benchmark in fire-safe piping
Fire-safe construction starts with the right materials
Fire safety is no longer a choice today. Inspection and acceptance requirements are becoming increasingly stringent—including for piping systems. While CL,s1 d0 was sufficient for years, we are seeing a clear shift toward BL,s1 d0. Not because it’s required, but because it’s safer—and prevents disputes on the job site.
While CL,s1 d0 was the standard for years, more and more building codes and engineering firms are switching to BL,s1 d0.
What does fire class BL,s1 d0 mean?
In Europe, materials are classified into fire reaction classes. BL,s1 d0 belongs to the highest categories for piping, and this translates into excellent performance:
B = very limited flammability
L = application specific to piping
s1 = minimal smoke development
d0 = no burning droplets or particles
This classification guarantees maximum safety in various construction situations, from residential buildings to commercial projects
The difference from CL,s1 d0 lies primarily in fire behavior: BL materials contribute significantly less to fire development.
Why does Henco choose BL,s1 d0?
The pre-insulated Henco multilayer pipe in the BL,s1 d0 class offers demonstrable advantages over alternatives in the CL,s1 d0 class. This translates to benefits both on the construction site and in the finished building.
1. Maximum fire safety
These materials are self-extinguishing and contribute minimally to flame or smoke development. In a fire, every second counts, and smoke is often more dangerous than fire. A higher smoke class therefore directly increases the safety of residents and users.
2. Reduced risk of fire spread
Thanks to the higher classification, the spread of fire is limited. This makes installations safer and provides extra security, both during the construction phase and while the building is in use.
3. Fully compliant with the strictest standards
BL,s1 d0 is fully aligned with modern building codes and safety programs. This makes these pipes particularly suitable for:
new construction
renovations
large projects with high safety requirements
technical rooms and shafts
4. Longer service life of the installation
Better fire performance means less damage to infrastructure and piping in the event of an incident. This contributes to the sustainability and reliability of the entire system.
Future-proof and professional
Installers, architects, and engineering firms are increasingly opting for materials that not only perform well technically but are also future-proof. A higher fire rating is not a luxury, but a smart investment in safety and quality.
Conclusion
With Henco’s pre-insulated pipes in fire class BL,s1 d0, you’re not only choosing a safe installation, but also a more reliable, sustainable, and future-oriented piping system. They outperform standard options and offer maximum peace of mind—for installers, construction partners, and end users alike.
Discover all the details in the brochure:

