Effluent Tank Repair - Northern Ireland The internal corner on these effluent tanks had broken down and needed replacing. Project Linings Ltd were contracted in to remove the cracked and delaminate epoxy floor and replace like for like. The concrete floor surfaces were cleaned and keyed by concrete grinding all the way round the inside perimeter corner of the tank. The internal corner was resealed with Sika TSPlus and two coats of resistant glass flake epoxy were then applied over the primed concrete surfaces. The tank was bolted back up and back in service within the week.