Santa Ana Winds and Roof Damage: What LA County Homeowners Should Know

Strong winds can displace roofing materials, damage edges and expose defects around flashings. Conditions vary by event and property; follow current National Weather Service alerts rather than relying on a general article for a wind forecast.

Here's what's actually happening to roofs during these events, and what to look for after.

Which roof components should be checked?

1. Lifted ridge caps and hip caps

Ridge and hip details should be inspected for movement, damaged caps and attachment issues. The correct fastening or bedding method depends on the roof system and manufacturer; the installation year alone does not identify a defect.

Symptom: tiles or shingles in the yard the morning after, or a visible gap when you look at the ridgeline.

2. Slipped or broken tiles

Damaged or displaced tiles can leave parts of the roof assembly exposed. Attachment methods vary by system. A close-up inspection should assess both the covering and the waterproofing beneath it rather than assuming every crack has the same effect.

Symptom: usually no visible damage until the next storm causes an interior ceiling stain. After a wind event, walk around the perimeter and look up at the field tiles for obviously broken or slipped pieces.

3. Flashing displacement around penetrations

Chimney flashings, vent pipe flashings, and skylight flashings are common failure points when wind drives in horizontally. Once the seal is broken at any of these points, the next rain finds it.

Symptom: leaks specifically near the chimney, around bathroom or kitchen vents, or near skylights — even when the rest of the roof looks intact.

How does the property's wind exposure affect the inspection?

Foothill neighborhoods in Los Angeles County, the San Fernando Valley and Ventura County can experience strong Santa Ana winds. Local terrain and exposure vary, so roof-edge details and wind-related damage should be assessed for the individual property.

Ask the roofer to check the applicable design and manufacturer requirements for:

• Roof-edge and field attachment.
• Compatible ridge and hip details.
• Flashing condition around walls and penetrations.
• Any proposed repair's compatibility with the existing system.

What to do after a Santa Ana event

1. Wait until conditions are safe. Look for displaced roofing from a protected position and avoid unstable debris.
2. Check ceilings the next time it rains. Any new staining or active drip needs immediate attention.
3. Look at the roofline from the ground. Use binoculars if you have them. You're checking for missing tiles, lifted ridge caps, or obvious shingle damage.
4. Don't climb on the roof yourself. Tile especially is dangerous to walk on for someone without training, and there may be unseen structural damage.
5. Ask about inspection availability. Report visible damage or active leaks, explain any access hazards and confirm what can be assessed safely.

Follow National Weather Service advice after high winds, particularly staying away from downed power lines. For the roof itself, review our roof repair service and repair-versus-replacement guide. No installation or maintenance visit can eliminate every storm risk.