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Upon investor request, an inspection of the roof of a production hall in Vrbas was conducted for routine maintenance and waterproofing repairs.

It was observed that the parapet’s waterproofing membrane was being affected by external wind forces, and there was a possibility of wind infiltration into the parapet layers (from within the building or through cladding and facade panels), causing tensile stress and alternating loads that resulted in cracks.

Additionally, an issue was identified at the parapet’s ledge, where the waterproofing membrane did not extend over it, leaving an unprotected section susceptible to water ingress.

For the restoration, the sheet metal parapet coverings (‘parapet caps’) were dismantled. The existing waterproofing was tightened, and a new 350mm-wide membrane was installed, fastened and welded to the existing roof-side membrane, extending over the facade panels and secured on the exterior-facing sandwich panels.

Steel rails were installed for linear fastening of the waterproofing at the center and base of the parapet, transitioning from the roof surface to the parapet’s vertical section. Strip tapes made from waterproofing membranes were hot-air welded to cover the steel rails.

The parapet sheet metal cladding was reinstalled and sealed at the joints.

Total length of parapet reinforcement and ledge waterproofing: approx. 340m.

View the gallery for before and after photos: