A suspended slab may carry traffic, plant, a podium finish or landscaping, and its waterproofing has to suit that final use. The condition of the concrete, expected movement, falls and drainage all shape the scope. Protection of the membrane during later trades is as important as the application itself, especially where a finish will conceal the system.
Water can enter at joints, outlets, slab edges and service penetrations before appearing some distance away. For remedial work, documenting the leak pattern and inspecting adjacent construction helps define the area to investigate. The repair may involve more than treating the stain underneath the slab. Waterseal’s podium and terrace waterproofing and civil waterproofing pages show related applications.
Continuity across a suspended slab
A suspended concrete slab can support traffic, finishes, landscaping or plant depending on the building. The waterproofing scope needs to account for that use, substrate condition, movement and drainage. Membrane protection is planned around subsequent work and the final finish.
Construction joints, changes in plane, outlets and penetrations require coordinated details. In remedial work, the visible leak may be displaced from the original water-entry point. Reviewing surrounding construction and the route water can take helps define preparation and repair requirements.
