Tanking, Sealing and Waterproofing



Tanking, sealing and Concrete Repair in London

GC Construct has the in-house expertise to design and install a range of bespoke tanking, sealing and waterproofing systems to prevent the ingress or egress of water. The control of water penetration through below ground and water retaining structures has always been a challenge for the construction industry. Here at GC Construct we relish such challenges.

With over 30 years of management experience, a highly skilled experienced workforce and proven methods and materials, we are confident in our abilities to solve any waterproofing problems presented to us.

We will provide you with technical advice and guidance throughout the process.

We can protect structures above and below ground to BS 8102:2009 grades one, two and three including: basements, cable trenches, reservoirs, swimming pools, storage tanks, tunnels and underground car parks


We provide effective solutions in partnership with the leading system manufacturers using the following BS 8102:2009 Type A, B and C materials and techniques:

  • Cavity membranes and drainage
  • Multi-coat renders and screeds
  • Liquid applied membranes
  • Injection water-stopping and leak sealing
  • Joint and crack sealing
  • Slurry coatings and thin bed mortars
  • Profiled sheet membranes
  • Vapour resistant coatings
  • Cementitious grouting