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Sold by ME. · David Thomas Mejia, Broker · CA DRE #01448424 · Veteran-owned · San Diego County
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Week 10 · March

Roof tune-up: drone check, seal penetrations and ridges

Most roof leaks start at penetrations (vents, pipes, skylights), ridges and flashing, not the field of the roof. A tune-up costs a fraction of a new roof.

Week 10MarchTime: 1 daySkill: Pro recommended

Photo: our crew

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How to do it

Step by step

  1. Fly a drone over the roof first. Photograph every penetration, ridge, valley and flashing from 15 to 20 ft.
  2. Mark cracked boots, lifted shingles, rusted flashing and gaps at ridges.
  3. Scrape off failed sealant, wire-brush rust and clean the area.
  4. Replace cracked pipe boots. Slip new step flashing under shingles where it is rusted through.
  5. Seal nail heads, boot collars and ridge caps. Coat seams with elastomeric.
  6. Paint exposed flashing to match. Fly the drone again for before/after photos for your records and insurance.
When to call a pro: Anything steeper than 6/12, two stories, tile roofs, or active leaks into the attic: hire a licensed roofer (C-39). Walking on tile breaks it.
Guide

What you need to know

Drone check: what to look for

  • Cracked or split rubber pipe boots
  • Missing or lifted ridge caps
  • Rusted or loose flashing at walls and chimneys
  • Granule loss and dark patches
  • Debris in valleys and gutters

Why penetrations and ridges leak

  • Rubber pipe boots dry out in San Diego sun in 8 to 12 years.
  • Ridges and hips take the most wind and heat.
  • Sealant shrinks and cracks; it is maintenance, not a permanent fix.

Drone rules

  • Recreational flyers must pass the free FAA TRUST test.
  • Paid inspections need an FAA Part 107 certificate.
  • Check B4UFLY: much of San Diego is controlled airspace near airports and bases.
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Broker, not a contractor. David Thomas Mejia is a California real estate broker (CA DRE #01448424), not a licensed contractor. Work that needs a California contractor's license should be done by a CSLB-licensed contractor; check any license at cslb.ca.gov. Cost ranges on this page are general estimates, not bids.

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