Invisible Connections is the registered trademark of SB Produksjon AS, Norwegian developer and manufacturer of the telescopic connectors range for nearly 30 years. In this time, hundreds of thousands of connectors have been used in construction projects around the world.

The ETA-approved telescopic connectors solve two key construction applications; ‘invisible’ connections for precast staircase construction and ‘invisible’ connections for precast beam construction.

In 2014, following many years’ particular success in the UK market, Invisible Connections Ltd (based in Thame, UK) was formed specifically to create focus on the telescopic connectors range. Invisible Connections Ltd is now the primary distribution partner of SB Produksjon AS and places core attention on business in the UK and Ireland, whilst also investigating opportunities in other world markets.

Another key product by Invisible Connections Ltd is the FERBOX reinforcement continuity system. Unlike any other system available to the UK market, FERBOX casings are bespoke-manufactured in-house (at Thame) to accurately accommodate the specified reinforcement design and joint length (normally without design compromise, cutting or wastage on site). FERBOX is also the first UK product of its type assessed to the requirements of EC2 by UK CARES.

From a buildability perspective, our products appeal typically to precast concrete manufacturers and in-situ concrete frame contractors who appreciate the fuss-free ease with which precast or in-situ elements can be connected. Our products also have aesthetic benefit to architects who appreciate the enabling of ‘clean lines’ wherever concrete elements are joined.

In short, all our products make Invisible Connections.

Technical Support

Technical support is provided by Cliff Billington MBE, Eur Ing, C Eng, BA, MICE, AMIStructE, in his capacity as Technical Director for Invisible Connections Ltd.

Cliff is a senior engineer with some 40 years’ experience in precast concrete construction and is recognised as an expert in this construction form. Cliff represents the UK on several European Technical panels, writing Eurocodes.

In 2014, Cliff’s standing and contribution within the UK construction industry was officially recognised when he received the prestigious honour, MBE (Member of the British Empire). Officially the gift of The Queen, the award citation was ‘for services to the construction industry’, and was presented by His Royal Highness the Prince of Wales at a Buckingham Palace ceremony.