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A ceiling stain appears only after rain
After rain, a stain appears or grows on an upstairs ceiling, sometimes with drips. Between rains it dries and fades. Water is entering from the roof, a terrace or a parapet above, and the stain is rarely directly under the entry point.
Waterproofing
Active ingress during rain is prioritised. Tracing and permanent repair are scheduled once the source is identified.
Call nowRequest an inspection on WhatsApp01LIKELY CAUSES
What usually sits behind this symptom, and what tells one cause from another.
Failed roof membrane or detail at an upstand
Membrane damaged or debonded at parapets, penetrations or outlets.
Blocked roof outlet causing ponding
Standing water around an outlet; water level reaching an upstand or joint.
Failed parapet coping or wall joint
Water entering at the top of the wall and tracking down inside.
02BEFORE ANYONE VISITS
What you can safely check.
- Photograph the stain after rain to track how it changes.
- Check whether roof outlets are clear, if you can reach them safely.
- Note whether the stain is near an external wall or in the middle of the room.
- Protect furniture below if drips appear.
03WHAT WE MEASURE
We inspect the roof above the stain and the surrounding area — membrane, upstands, penetrations, outlets and copings — and use moisture readings and, where needed, controlled water testing to confirm the entry point before quoting a repair.
04IN A VILLA
Villa roofs carry tanks, AC units and penetrations, all of which break the membrane. Rain is infrequent, so a leak can go unnoticed for months and then appear suddenly after a heavy shower.
05THE FIX
Which repair, and when.
Each rain wets the roof slab and ceiling further, damaging finishes and risking corrosion in the structure over time.
Local membrane repair at the failed detail
The entry point is a specific detail or penetration.
Clear outlets and correct falls
Ponding is pushing water into joints.
Renew the roof membrane
The membrane has failed across a wider area.
06Typical villa waterproofing work
Quoted after survey — always
Cost is driven almost entirely by what the tracing finds and how much has to be lifted to reach it. We do not price waterproofing over the phone, because a number given before the source is located is a guess.
07QUESTIONS
- Does the whole roof need redoing?
- Often not. Many leaks are at specific details. Tracing comes before replacing.
- What does waterproofing cost?
- Waterproofing is always quoted after survey, because the cause and area decide the work.