Tunnels are often built with a life of over 100 years,which means that standards for tunnel construction must be high. To ensure this keeps it’s promise, it is important to ensure the structure is fully protected and waterproofed to avoid leakage or water ingress.

A tunnel seal has the task of protecting the tunnel against damage from moisture or any entry of water, soils or chemicals. This is why the functioning of a seal is significant in the case of traffic tunnels.

Our non-disruptive resin injection waterproofing solution provides a robust and highly resistant protection. Our on-site testing ensures that it is effectively watertight to prevent any corrosion.

The Tunnel Waterproofing Solution

Our leak sealing hydrostructural elastomer / acrylic gel technology has been embraced by the UK and European Rail and Highways sector, becoming the accepted alternative to traditional waterproofing, offering solutions and eliminating disruption and excessive costs. All waterproofing works are carried out from the underside of any structure providing significantly reduced costs and disruption by eliminating expensive track up or highway excavations. In fact, all works are carried out with road and rail traffic functioning as normal.

Our injection system utilises 60 years of waterproofing experience in resin injection technology, where we have majored on undisruptive leak sealing of structures in brick, stone, in-situ, precast & steel bridges, and tunnels, providing a curtain injection solution of hydrostructural elastomer gel to the structure extrados, capable of dealing with heavy flow water ingress – effectively replicating traditional sheet or spray applied membrane systems.

The Key benefits to the solution are:

  • Systems applied with no disruption to road or rail traffic above
  • Hundreds of structures successfully completed to-date including UK Heritage Bridges
  • Hydrostructural elastomer gel provides identical service life to traditional sheet and spray applied membrane systems
  • Entire structures or localised waterproofing solutions, including expansion / contraction joints, can be provided
  • Technical Management provided throughout all projects

Droitwich Viaduct

Client: Network Rail

A 7 span traditional rail over road masonry brick structure suffering from water ingress issues.

Network Rail’s options were to use traditional ‘track up’ waterproofing means, however this solution was quickly ruled out due to track disruption and excessive cost.

The MC elastomer waterproofing solution was adopted as a suitable system with all waterproofing works being carried out from the underside of the structure without disruption or speed restriction to rail traffic above.

Network Rail and their contracting partners have both expressed their complete satisfaction with the MC system and have gone on to adopt this technique on numerous other structures.