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Watertight seals for underground substations

Underground electrical substation provider Tipeberri always includes Roxtec cable seals.

Watertight seals for underground substations

“Our customers see it as a sign of quality and reliability,” says Alberto Espiga, Managing Director of Tipeberri.

Tipeberri in Legutiano, Spain, builds and delivers precast concrete underground substations and junction chambers for leading companies within medium voltage power transmission and distribution. Their customers are leading players in electrical engineering, construction and installation as well as in renewable energies and the railway sector. To secure all openings for power and earthing cables and prevent water ingress, all substations come with Roxtec seals.    

“We decided to work with Roxtec from the very beginning as we knew the system from previous experiences. The main benefit is the high quality of the products,” says Alberto Espiga.   

Area efficient solutions

The substations have limited space due to their compact design, so Tipeberri prefers integrating cable seals that require a minimum of space. Roxtec seals perfectly meet these requirements. 

“The Roxtec sealing system enables installers to pass through many cables also in a very small area. The result we achieve is better than with any other solution,” says Alberto Espiga. 

Reliable sealing partner

Tipeberri uses Roxtec standard solutions in 90 percent of their applications. They appreciate the possibility to respond to end-customers’ specific needs by asking Roxtec to create special seals.  

“My experience of Roxtec is very positive”, says Alberto Espiga. “That is why we have been working with Roxtec for so many years. The availability and attention of the sales representatives and the strict compliance with delivery dates prove that Roxtec is a serious company.”

We chose Roxtec to ensure operational reliability.
Alberto Espiga, Managing Director, Tipeberri

Why use Roxtec?

  • Watertight
  • Rodent barrier
  • Cable retention
  • Multi-cable solution
  • Superior service and support 

Project facts

Project description

Construction of precast concrete underground substations in Legutiano, Álava, Spain

Involved company

Tipeberri Envolventes Prefabricados de Hormigón, S.L.L. – design, engineering and construction


Sealing of openings in walls for medium voltage, low voltage and earthing cables

Sealing requirements


Roxtec products

Roxtec rectangular transits, round seals and knock-out sleeves