Roof Leaks and Mold: What to Check After the First Los Angeles Storms

Southern California roofs can go most of the year without seeing rain. Flashing dries out, sealant cracks, and small gaps go unnoticed until the first real storm. By then, water may have been getting into the attic or ceiling for hours.

• Ceiling stains, often a ring that grows or darkens after each rain.
• Attic sheathing and insulation, which can stay damp long after the storm.
• Around skylights, chimneys, and vents, where flashing is most likely to fail.
• Top of exterior walls, where water runs down inside the cavity.

1. Stop the water and get the roof repaired as soon as possible.
2. Take photos of the ceiling, attic, and any damaged belongings.
3. Dry wet materials quickly. The U.S. EPA advises drying water-damaged areas within 24 to 48 hours to prevent mold growth.
4. Replace insulation or drywall that stayed wet.
5. Report the damage to your insurance agent if you plan to file a claim.

Consider an inspection if the leak went unnoticed for a while, if materials stayed wet for more than a day or two, or if you notice a musty smell after the area dries. An attic can hold moisture out of sight, and a stain that dried does not always mean the material underneath dried.

A dated inspection report with lab results gives you a clear record of conditions after the leak. That record is useful for your contractor, for your insurance adjuster, and later if you sell the home.

Just Mold Testing serves Los Angeles, the San Fernando Valley, and surrounding areas. We test and never remediate, so our findings stay objective. $49 inspection, lab results typically within 24 to 48 hours. Call (818) 658-9336 or book online.