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Common Water Issue in BC
Irregular Ceiling Stain — Roof or Envelope Leak Pattern
An irregular or spreading ceiling stain in BC homes typically indicates a roof leak or building envelope issue rather than a plumbing leak.
Possible Causes
- •Roof leak from damaged shingles, flashing, or membrane above stain
- •Ice damming forcing water under roof covering
- •Leaking skylight or roof penetration
- •Failed chimney flashing allowing water entry
- •Building envelope leak at wall-roof junction
Recommended Steps
- 1Check if stain appears or grows during or after rain events
- 2Photograph stain and note location relative to roof features above
- 3Check attic above stain for signs of water entry or staining
- 4Look for roof damage, lifted shingles, or debris accumulation above stain area
- 5Call professional roof leak detection with thermal imaging for accurate diagnosis
Related Services
Need Professional Help?
Don't let a small leak become a big problem. Contact LeakInspections.ca — a division of Anyleak.ca and Leak.ca — for expert diagnosis.