Wastewater Tank Repair - Northern Ireland The internal corner on these effluent tanks had broken down and needed replacing. Project Linings Ltd were contracted to remove the cracked and delaminate epoxy floor and replace like for like. The concrete floor surfaces were cleaned and keyed by grinding all the way round the inside corner of the tank. The internal corner was resealed with Sika TS plus and the concrete floor primed with our epoxy concrete sealer. 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.