17 Jul Plastic optical fibre in building rehabilitation

The European housing stock faces a historic dual challenge: upgrading its energy efficiency while simultaneously adapting its facilities to the gigabit era. However, when tackling the building rehabilitation of old or listed properties, traditional cabling methods clash with stone walls, decorative ceilings, and a total absence of dedicated telecommunications ducting.

Fortunately, network technology has developed an alternative that is completely changing the game in architecture and engineering. Plastic optical fibre (also known as POF) has positioned itself as the perfect solution to bring maximum connection speeds to every corner of a historic property—invisibly and without the need to pick up a single hammer.

Installation without construction work: Respecting the original structure 

The main obstacle in building rehabilitation is the impossibility of chasing out or drilling new channels into walls, due to conservation regulations or high financial costs.

Plastic fibre removes this barrier completely:

• Its exceptionally thin outer diameter allows it to be fed directly through existing electrical conduits.
• It leverages the property’s current junction boxes and power sockets to establish connection points.
• It eliminates the need to install unsightly external trunking that breaks the aesthetic harmony of the building.

This allows a 19th-century or mid-20th-century building to enjoy next-generation symmetrical connections within a matter of hours, keeping its architectural value completely intact.

Total immunity from electrical noise 

Sharing space in the same conduit with traditional electrical mains cables is strictly forbidden for copper network cables (such as Cat 6), as high-voltage electrical fields generate electromagnetic interference that destroys the data signal.

With plastic optical fibre, this issue disappears entirely. Manufactured with a high-purity polymer plastic core, the signal travels as green light and does not conduct electricity. This grants it absolute electromagnetic immunity, meaning it can safely coexist within the same conduit as power lines without suffering the slightest degradation in speed or risking the safety of the installation.

Extreme flexibility compared to conventional glass 

While traditional glass fibre optics are excellent for long-distance outdoor data transport, they are extremely fragile when it comes to indoor installation in confined spaces. If a glass strand is bent too far around a tight corner or inside a crowded junction box, it fractures and the connection dies.

Designed to withstand the most complex routing

In refurbishment projects, old pipes and conduits often feature very sharp bends, impossible elbows, and bottlenecks. Plastic fibre stands out for its extraordinary ductility and mechanical strength: it can be bent at 90-degree angles, coiled, and twisted around the most complex corners of the building without breaking or losing a single megabit of performance in the process.

The indoor last mile: Maximising the backbone network 

It is of no use for a major data highway to provide a building with premium connectivity if, once inside the communal areas, the signal fades or is poorly distributed across different floors and offices due to deficient internal cabling.

Plastic optical fibre acts as the perfect bridge for the “indoor last mile”. It ensures that the high-speed, low-latency capacity arriving at the building’s main demarcation point branches out successfully—and at 100% performance—to each end user, optimising the telecommunications investment and permanently eradicating dead zones or micro-cuts.