Roof sheathing rot — Los Angeles, California
Roof sheathing (the plywood or OSB boards nailed to the rafters beneath shingles) can rot when moisture becomes trapped — from a slow leak, poor attic ventilation, or ice dams pushing water under shingles. Soft, spongy spots on the roof surface, sagging between rafters visible from the attic, or dark water stains on sheathing boards are all signs of rot. A roofer can assess the extent of damage, replace affected sheathing panels ($70–$100 per sheet plus labor), and address the moisture source to prevent recurrence.
Waarom dit veel voorkomt in Los Angeles
Intense UV exposure degrades roofing materials faster in LA than most US cities. Flat roofs and tile roofs dominate, each with specific maintenance needs. Rare but heavy rains after dry spells expose hidden leaks and cause flash-flood damage to roofing systems.
Who to call
For this problem in Los Angeles, call a: Dakdekker
Vind een Dakdekker in Los AngelesSymptoms to look for
- Soft or spongy spots when walking on the roof
- Visible sagging between rafters when viewed from inside the attic
- Dark stains, mold, or fungus on attic-side sheathing boards
- Shingles that appear wavy, cupped, or dipped in certain areas
Spoeddienst in Los Angeles
Emergency services in Los Angeles typically respond within 30–60 minutes during business hours, but traffic can extend response times to 2+ hours across the metro area. After-hours emergency plumbing and electrical services run $125–$250/hour. California law requires contractors to be licensed for work over $500.