CAL FIRE puts the under-deck footprint in the ember-resistant zone
installation-mistake
CAL FIRE home-hardening guidance tells homeowners to keep the area beneath a deck and the first five feet around it clear of combustible material and to use hardscape in that zone. This is California mitigation guidance, not a construction-code application or an IBHS designation.
Home Hardening — CAL FIRE (official). Accessed 2026-08-23.
CAL FIRE puts the under-deck footprint in the ember-resistant zone. FireApproved. https://fireapproved.com/findings/cal-fire-under-deck-ember-resistant-zone/. As of 2026-08-23.