Symptom guide
Ceiling Stain That Keeps Growing
Why ceiling stains spread away from their source, and how the path is traced.
Water enters at a defect and travels along framing, so the stain is often metres from the leak. The stain shows where water exits, not where it enters.
What to check yourself
- Note when the stain grows: rain, hot water use, or mornings
- Photograph it with a date reference
- Check above for plumbing routes and roof or deck details
Likely causes
- A roof, deck or envelope failure
- A supply or drain line above the ceiling
- Condensation from an HVAC or ventilation fault
What the investigation does
- Trace the moisture path with thermal and metering
- Confirm the entry point rather than the stain
- Document for repair and insurance
Methods often used
Quick answers
What should I do first about this?
Trace the moisture path with thermal and metering
Can this be fixed without opening everything?
In most cases the investigation narrows the target before any finish is opened. Small access points are sometimes needed to confirm a finding, and that is discussed before anything is opened.
How do I arrange an investigation?
Call 604-239-9934 or email [email protected] with the symptom and when it appears. You will get a reply within one business day with a fixed quote.
Call 604-239-9934 or email [email protected]