| Substrate | 2 sumps |
| Material | Precast Concrete caisson bolted together and sealed with Rubber Gaskets. The Rubber Gaskets had failed causing infiltration due to poor installation. |
| Purpose of the sumps | Treatment of brewery waste products, including hops, yeast and barley |
| Significant preparation was required prior to spraying which took 5 days. | |
| Sump 1 | Approx size 4m dia x 4m deep |
| Condition | The sumps was in reasonable condition with minimal infiltration. The surface had a previous coating which proved extremely difficult to remove. |
| Preparation | High pressure power wash. The existing coating was then abraded to provide a suitable key for the epoxy followed by power wash again. The entire surface was then acid etched and washed down with water prior to spraying. |
| Spraying | 1 coat at 6mm thick. |
| Sump 2 | Approx size 7m dia x 5m deep |
| Condition | The sump had extreme infiltration and the surface had a previous coating which proved extremely difficult to remove. |
| Preparation | High pressure power wash. The existing coating was then abraded to provide a suitable key for the epoxy followed by power wash again. Areas of infiltration were then drilled and an injection grout system applied to seal the leakages which included fast setting cement (waterplug). The entire surface was then acid etched and washed down with water prior to spraying. |
| Spraying | 1 coat at 6mm thick. |
Before
After
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1 Jan