Engineer inspecting water ingress on a rail tunnel lining

Permanent injectable waterproofing · UK-wide

We stop water at the source

Seal Smart is a UK waterproofing contractor delivering environmentally friendly injectable systems that penetrate deep into cracks, joints and voids — engineered for high-risk, hard-to-access rail and civils environments.

  • Fully RISQS approved
  • All staff hold PTS and CSCS
  • COSS-qualified staff available
  • Fully guaranteed installations

What we do

Injectable waterproofing that outperforms foam and membranes

Stops water at the source

Our formular travels into the structure and seals the water path itself, rather than managing the leak once it has already reached the face.

Deep penetration

Engineered to penetrate cracks, joints and voids that surface coatings, foams and sheet membranes cannot reach.

Environmentally friendly

A permanent, environmentally friendly system suitable for sensitive live environments and confined spaces.

Fully guaranteed

Every installation is fully guaranteed and documented, with a specification written for the structure in front of us.

Hard-to-access ready

Designed for high-risk, restricted-access assets — deep shafts, live platforms, lift pits and trackside structures.

Turnkey rail delivery

We work alongside a planning and possession company to offer a full turnkey rail package from planning through to sign-off.

Recent project · Cavern Walks, Liverpool

From persistent water ingress to completely dry

Water was tracking from the Cilla Black statue into the shopping centre car park. We traced the path, sealed the source and completed the work in two days — one day ahead of schedule.

Cavern Walks car park wall before treatment, showing severe water ingress
Before
Cavern Walks car park wall after Seal Smart waterproofing treatment
After

“Tom and the lads from SealSmart Waterproofing were very professional, courteous and informative. We had record rainfall amounts two weeks later and the car park stayed dry.”

Jimmy CaulfieldCentre Manager, Cavern Walks

Recent project · Anfield Stadium, Liverpool FC

Stopping water ingress at one of football's biggest venues

Persistent water ingress was coming through a stadium stand at Anfield and threatening a plant room packed with match-critical kit. Our high-pressure injectable sealant penetrated deep into the structure, sealed the water path at the source and left the area completely watertight — with no disruption to match day operations.

Anfield stadium stand treated by Seal Smart Waterproofing
Sealed movement joint beneath the stadium seating at Anfield
Plant room wall at Anfield after injection waterproofing treatment

“A big thank you for your speedy response to our plant room leak issues. We have had sustained heavy rainfall since the works were carried out with no issues. The area you treated is now water tight.”

PaulLiverpool Football Club, Anfield Stadium
Formular injection packer sealing a crack in a concrete wall

Structures we seal

Engineered for the difficult ones

Every structure is surveyed, specified and injected to suit its condition, water pressure and access constraints.

  • Tunnels
  • Platforms
  • Car parks
  • Chambers
  • Shafts
  • Retaining walls
  • Lift pits
  • Trackside structures

Water ingress on your structure?

Send us drawings, photos or survey notes and we will specify a permanent injectable solution — fully guaranteed, UK-wide.

Request a survey