Source of seepage
Balcony and utility drains
Water from balconies, utility areas and washing machine points
How water travels
From the source to your wall.
Balconies and utility areas take rain, floor washing and washing machine outflow. If the floor slopes towards the room instead of the drain, the outlet blocks, or there is no waterproofing or upstand at the threshold, water seeps under the door and into the floor bedding of the room next to it, or through the slab to the flat below. Utility areas with a washing machine and sink often have their own concealed waste lines as well.
When it shows: After heavy rain on open balconies, and all year in utility areas used daily.
The pattern it leaves
- Damp at the base of the wall and door frame next to the balcony or utility door
- Skirting tide marks spreading into the adjoining room
- Ceiling patches in the flat below under the balcony or utility area
- Swollen door frames and laminate near the threshold
- Damp that worsens after rain or washing days
How it's confirmed
Meter, thermal, eyes.
- Meter readings along the threshold, skirting and lower walls inside, against the dry reference
- Thermal scan of the floor and walls next to the balcony, with each cool area confirmed by the meter
- Checking floor slope and drain flow, with a small amount of water where the owner permits
- Visual check of the outlet, grout, threshold height and washing machine connections
Who is usually responsible
It depends on where the water starts.
- Owner
- Usually responsible for the balcony or utility floor, drains and fittings within their own flat.
- Neighbour above
- Usually responsible if water comes from their balcony or utility area into your ceiling, depending on the society's bye-laws, which vary.
- Builder (within defect period)
- Wrong slope or missing waterproofing in a new flat brought to the builder's notice within five years from the date of handing over possession falls under Section 14(3) of the RERA Act, 2016. Your state's rules may differ.
Typical repair approach
What a fix usually involves.
Described for understanding, not as a recommendation. Megahedge does not do repairs or recommend contractors.
- 01Clearing and resetting the floor drain
- 02Re-laying the floor with the correct slope to the drain and a waterproofing layer turned up at the walls and threshold
- 03Adding or raising the threshold step at the door
- 04Sealing washing machine and sink waste connections
- 05Drying and repairing the adjoining room's walls afterwards
Questions buyers ask
Is a balcony leak a common area issue?
Usually not. A balcony attached to your flat is normally your responsibility, though bye-laws vary.
We covered the balcony with glass. Can it still leak?
Yes. Utility use, floor washing and gaps in the enclosure can still bring water in, and the floor slope still matters.
Is this on the Possession Check list?
Yes. Balcony slope, drain flow and threshold details are checked at handover.
Find the damp before you pay for it.
Book a moisture and thermal inspection. Report on WhatsApp within 24 hours.