Water Stains: Roof Leak or Condensation? — Inspection Notes
What a real inspection covers on storm damage in the Valley, and what usually gets skipped.
A roof inspection is only as good as what gets looked at, and a lot of what gets called an inspection is a walk round the garden with a phone camera. This is what a real one covers on storm damage in the San Fernando Valley.
What actually matters
Storm damage is a moment in time, and documenting it properly matters as much as repairing it. What is recorded in the first forty-eight hours decides how the rest of the process goes. An inspection that does not account for that is looking at the wrong layer.
The detail that is usually left out
An inspection is only as good as what gets looked at, and photographs of specific defects are what let you get a second opinion without a second visit. Temporary protection has to be done in a way that does not cause its own damage. A tarp fixed through a sound part of the covering creates new holes in a roof that did not have them. Anything under half an hour on an average house has skipped something.
What is specific to the San Fernando Valley
Summer is the problem here. The Valley runs ten to fifteen degrees hotter than the coast and holds it for weeks, so a roof surface that reads 90 degrees in Santa Monica is well past 160 in Van Nuys by mid-afternoon. Everything on the roof expands into that heat and contracts again overnight, and it is that daily movement, not the peak temperature, that opens laps and backs fasteners out. Most of the housing went up between 1950 and 1975, which means original decking, undersized ventilation and at least one previous layer that somebody roofed straight over rather than tearing off.
The full inspection list
- Displaced, lifted or missing units, slope by slope
- Seal integrity on the windward elevation, checked by hand
- Ridge, hip and perimeter fixing after wind loading
- Impact marks, splits and any debris strike on the surface
- Flashing displacement at walls, chimneys and penetrations
- Gutters and downpipes for detachment and blockage
- Interior and attic inspection for water entry already in progress
Common questions
How long should an inspection take?
Long enough to get on the roof and into the attic. Anything under half an hour on an average house has skipped something.
Should I expect photographs?
Yes, and of the specific defects rather than general views. Photographs are what let you get a second opinion without a second visit.
The honest summary
Get it documented, get it protected without adding damage, then get it assessed properly. Those three things in that order account for most good storm outcomes. In the San Fernando Valley the thing to watch is attic temperature and intake ventilation, because a Valley attic that cannot breathe cooks the underside of the roof as hard as the sun cooks the top.
Free inspection, drone photography where access is difficult, and a written estimate with deck repair priced per sheet. No obligation.