The Concrete Slab Leakage Problem
Flat concrete roofs and storey-building slabs are among the most common sources of leakage in Ghanaian buildings. Water can penetrate through surface cracks, failed screed layers, joint failures, and poor waterproofing — causing damage to the rooms below, destroying ceilings, and creating unhealthy living conditions.
In many cases, the concrete slab has already been poured and finished, but leakage develops over time due to thermal expansion, structural movement, or degradation of the original waterproofing layer. Simply applying more sealant on top rarely solves the problem permanently.
Common Signs of Roof & Slab Leakage
Water Stains on Ceilings
Brown or dark patches appearing on ceiling surfaces below the slab.
Cracked Screed Layer
Visible cracks in the surface screed allowing water penetration.
Joint & Edge Failures
Water entering at slab edges, parapet joints, or pipe penetrations.
Peeling Roof Coatings
Failed waterproofing coatings that have deteriorated or separated.
Our Roof & Slab Leakage Treatment Process
Inspection
Thorough assessment of the roof or slab to identify all potential leakage points.
Identify Leakage Paths
Locate where water is penetrating — cracks, joints, edges, or failed areas.
Surface Preparation
Clean and prepare all affected areas, removing loose material and old coatings.
Crack & Joint Treatment
Seal all cracks, joints and penetration points with appropriate fillers and sealants.
Re-Screeding
Apply new screed where the existing layer has failed, ensuring proper fall and drainage.
Waterproofing Membrane
Professional waterproof membrane application to create a continuous barrier.
Protective Finishing
Apply protective and UV-resistant finishing coats where appropriate.
Water-Resistance Testing
Verify the treatment is effective with water testing before handover.
What We Treat
- Flat concrete roof leakage
- Storey-building concrete slab leakage
- Surface cracking in screed layers
- Failed or deteriorated waterproofing membranes
- Parapet wall and edge joint failures
- Pipe and service penetration leaks
- Ponding water on roof surfaces
- Re-screeding where original screed has failed
Stop the Leak Before It Causes More Damage
Water leakage gets worse over time. The longer it's left, the more damage it causes to ceilings, walls, electrical fittings and the structure itself. Book an inspection today.