A balcony is exposed to water and often sits directly above occupied accommodation. Blocked outlets, inadequate falls and weak junctions at doors or walls can allow water to pond or enter the building. The defect may not become obvious until washing, flood testing or rainfall.
Look at the whole drainage path
The inspection should identify finished levels, falls, outlet position, grilles, debris, overflow provision and the discharge route. A clear outlet does not resolve a balcony that falls away from it or has an unprotected threshold.
Review waterproofing interfaces
Balustrade fixings, door thresholds, façade junctions and movement joints are common weak points. Surface grout or sealant is not necessarily the primary waterproofing layer. Local repair should address the actual water path.
Testing and repair
A controlled flood test may help locate leakage where suitable, but the test method and protection of neighbouring units must be agreed. The report should identify observed defects and whether opening-up or specialist waterproofing advice is required.
Questions clients ask
Does epoxy grout make a balcony waterproof?
Grout can reduce water movement through joints, but waterproofing depends on the full designed system and its interfaces.
Why does water collect beside a balcony door?
Possible causes include poor falls, a raised outlet, blocked drainage or an unsuitable threshold detail. The cause must be inspected in context.
Can balcony leakage affect the flat below?
Yes. Water can travel through the slab or at penetrations and appear away from the visible defect.
Inspection scope and conclusions depend on the property, access and information available. Inspec can advise on an appropriate appointment for the specific building.
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