08/10/2026
How do you seal submerged sheet piles in a harbour? Our latest case study in Yorkshire had to tackle this exact challenge, taking on a marine sheet pile waterproofing project in Scarborough.
Scarborough Harbour’s West Pier has faced decades of exposure from its harsh marine environment, causing corrosion, movement and distortion of the existing sheet piling.
As part of a structural strengthening programme, new sheet piles were fixed to the existing harbour wall. However, this created over 100 irregular voids between the old and new piling, with gaps ranging from 15–50mm.
Following extensive testing and collaboration between Neom Engineering, LCM Environmental and PM Diving Services, a bespoke polyurethane injection solution was developed using PC Leakinject UNI 6816 E resin from Tradecc.
The resin was injected underwater to seal the voids, joints and interlocks, while also filling the space beneath the sheet piling to create a stable, waterproof base.
Approximately 100 underwater repairs were successfully completed, helping to isolate the steel piling from seawater and oxygen and extending the operational lifespan of the structure.
A great example of collaborative engineering to overcome a complex marine waterproofing challenge!
