Wildfire Knowledge Graph · Built Environment
Ignition of deck boards, framing, debris or items on a deck from embers, flame contact or radiant exposure.
In plain language
Ignition of deck boards, framing, debris or items on a deck from embers, flame contact or radiant exposure.
Why it matters
Deck Ignition is useful because it separates one specific part of wildfire behaviour, exposure, operations or evidence from nearby concepts that can otherwise be mixed together.
Deck ignition: surfaces, undersides and storage must be assessed
A deck can be exposed by direct flames from nearby fuel, radiation from an adjacent fire and embers landing in cracks or debris. Fire behaviour around and beneath the deck may be more important than the visible finish of its top surface.
Inspect joist spaces, stored furniture, flammable liquids, dry leaves, railings, steps and any direct contact with siding. A deck’s combustibility is not determined solely by the brand of decking board: the complete assembly, fasteners and support details matter.
Example: replacing boards with a material marketed as fire resistant may not correct a pile of dry combustibles underneath or a vulnerable wall-to-deck junction. A robust assessment considers the entire flame and ember pathway.
Use tested assembly information and local codes, particularly when changing load-bearing components. No deck retrofit can reasonably be described as guaranteeing protection against all wildfire exposures.
Explore Ember Exposure and Structure Hardening.