Winter Storm Window Prep for Los Angeles Homes
LA doesn't get winter the way other cities do, but the rainy season still finds every weak seal, every gap, and every spot where water has been quietly getting in unnoticed for months. A few minutes of checking before the first real storm of the season can be the difference between a minor fix now and water damage later.
A quick pre-storm checklist
- Run a hand along the frame edges on a breezy day. Any draft means the seal or weatherstripping needs attention before rain finds the same gap.
- Check the sill for soft spots or discoloration. This is usually the first place wood rot shows up, and it's far cheaper to address before a storm pushes water against it directly.
- Look at the caulking around the exterior frame. Cracked, peeling, or missing caulk is one of the most common — and most overlooked — sources of water intrusion during heavy rain.
- Test that every window latches fully. A window that looks closed but isn't fully latched won't seal properly against wind-driven rain.
- Clear window wells and nearby drainage paths of debris so water has somewhere to go besides your sill.
Draft vs. real seal failure — how to tell which you have
A faint draft on a windy day, with no visible damage, is often just aging weatherstripping — an inexpensive, fast fix. A draft paired with visible gaps, soft wood, or water stains on the interior sill after a previous storm is a sign of an actual seal or frame failure, and patching it with caulk alone is a temporary fix at best.
What actually happens during a storm-damage call
When we get an active-leak call during a storm, the first priority is stopping water intrusion, not a full repair — that often means a temporary seal to get through the storm safely, with the permanent fix scheduled once conditions allow proper work. If a window has been compromised by wind or impact (a tree branch, debris), our 24/7 line covers that as an emergency call, not a next-week appointment.
The number one mistake we see: people notice a small drip during a storm, decide it's "not bad enough" to call, and a manageable seal issue becomes water damage to the wall or floor by the next storm.
Why this matters more for older LA homes
Homes built before modern weatherproofing standards — much of South LA and Downtown's older housing stock — were not built with today's sealing expectations. That's not a flaw, it's just an age fact, and it means a seasonal check is worth doing every year rather than assuming last year's fine condition still holds.