FireApproved

Home / Requirements / IBHS Plus solid-core exterior door

IBHS Wildfire Prepared Home Plus solid-core exterior-door path

The current IBHS Plus standard includes a solid-core exterior-door path with minimum thickness and a noncombustible threshold.

This record covers the solid-core path only. Door glazing, frame, jamb, perimeter gaps, hardware, and installation remain separate checks.

program · California and Oregon program applicants · Last verified 2026-08-24 · JSON (CC BY 4.0)

Published requirement text

“solid-core wood not less than 1-¾ inches thick (44 mm). The exterior doors shall be constructed with noncombustible threshold.”

2025 Wildfire Prepared Home Technical Standard — Insurance Institute for Business & Home Safety

Where this instrument is documented

Instrument ibhs-wildfire-prepared.

Set a location to read how this instrument lands where you are.

No sourced application record joins this requirement to a place. The quoted text stands on its own; local reach is unknown.

Each place page carries that place's boundary, project scope and open official checks in full; this page's JSON twin carries them per application.

Machine-readable constraints

AttributeOperatorValueUnit
assemblyRole eq exterior-door
solidCore eq true
thicknessIn gte 1.75 inch
noncombustibleThreshold eq true

Sources

IBHS Wildfire Prepared Home Plus solid-core exterior-door path. FireApproved. https://fireapproved.com/requirements/ibhs-plus-solid-core-exterior-door/. Last verified 2026-08-24.