The Damptec team was approached by Classic Lifts to treat water ingress in a lift pit at Tamworth Library. The pit houses a fully operating lift. It is formed of brick and block work construction. The issue was pooling water at the wall/floor junction.
After surveying the pit we recommended an internal Type A barrier protection waterproofing system.
SPECIFICATION
Waterproofing the negative side
- The substrate was damaged and we noted deterioration, cracks and holes. These had to be filled prior to the installation of the waterproof membrane using Koster Repair Mortar.
- We primed the concrete floor and walls with Polysil TG 500.
- We then formed a fillet along the wall/floor and the vertical change of direction junctions using Koster Repair Mortar Plus.
- At this point the lift pit was ready for the Koster KD System which involved 3 products:
- KÖSTER KD 1 Base which is a fast curing sealing slurry proven to be highly successful at resisting aggressive ground water and high water pressure.
- KÖSTER KD 2 Blitz-Powder: a reactive powder with extremely short setting time sealing leaks within seconds.
- KÖSTER KD 3 Sealer: a low viscosity silicifying liquid which penetrates the substrate and forms an compound which plugs the pores and seals them permanently via a mineralisation process.