Cold Water Tank Repair - Birmingham This leaking cast iron cold water storage tank in the West Midlands needed complete refurbishment. Our job was to bring it back into the 21st century. As the tank was being fed by a bore hole there was plenty of sludge inside. Once the sludge was removed, we cleaned and keyed the internal surfaces by sandblasting. Removing all the rust and exposing all the underlying weaknesses with the tank. We had to use Hodge Clemco's JBlast Supa to get the key we needed. The cleaned surfaces were then primed with polyester resin. When the primer was cured we repaired all the holes and reconstructed the corroded areas using layers fibreglass matting supported by gap filling paste and a WRAS approved polyester resin. When all the repairs had been made and had cured we applied the fibreglass reinforcement matting to the walls and floor area of the tank. The reconstructive fibreglass matting was impregnated with Lloyds approved polyester resin. When the applied fibreglass lining had cured, a topcoat of polyester gel was rollered on the surfaces to seal the lining, ensuring water tightness and protecting the water tank against further corrosion for at least the next 25 years.