How to Prepare

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Under-Eave Construction

The under-eave area of a house is often overlooked when addressing vulnerabilities that can cause damage or loss during a wildfire. Neglecting this structural component increases susceptibility to heat from flames, which can become trapped, allowing fire to spread through attic vents and into the attic. Embers lodged in gaps between blocking and joists can result in ignition and fire entry into the attic.

Under-Eave Construction: Wildfire Research Fact Sheet

Eaves, Overhangs, and Soffits

  • Soffit-Eave Construction, which encloses the underside of sloped or flat-roof overhangs, is best for homes in high fire hazard zones.
  • With open eaves, use a sealant (such as calking) to cover gaps, or enclose the underside of the roof overhangs.
  • In open eave construction, embers can and do accumulate between blocking and joists and can ignite these members if sufficient accumulation occurs.

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Support the Santa Barbara County Fire Safe Council. Become a member, and help us achieve our mission of promoting wildfire safety across the County through education and action.

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