Application
Defensible Space: Turn Wooden Fences Into Passive Fire Barriers
Fences in wildfire-prone zones act as ignition pathways straight to homes. Wildfire Shield is a non-toxic protective coating that transforms standard wood fencing into a passive fire barrier — qualifying for grant funding and improving community fire readiness.
The Challenge
Wooden fences are ignition pathways, not barriers
In wildland-urban interface (WUI) zones, the most common ignition source for a structure isn't the fire front — it's a wooden fence connecting the wildland to the home. Untreated cedar, pine, and redwood fences ignite fast, carry flame for hundreds of feet, and bring fire directly to siding, eaves, and decks.
Insurance carriers know this. So do fire marshals. Many homeowners now face non-renewal, premium hikes, or compliance demands tied to defensible space and combustible materials within Zone 0.
Removing wooden fencing isn't always feasible — and HOAs, municipalities, and homeowners need a way to harden the fences they already have without losing the look or replacing miles of materials.
The Solution
Wildfire Shield: a passive fire barrier you brush onto wood
Wildfire Shield is a high-performance, non-toxic coating that protects wood from ignition — even across multiple fire events. NanoTech's ICP™ technology turns standard wooden fencing into a passive thermal barrier without changing the look or installation method.
Unlike intumescent paints that activate once and need replacing, Wildfire Shield resists ignition repeatedly. It's certified for use on wooden assemblies and increasingly recognized in WUI grant programs and community fire readiness initiatives.
Why HOAs and homeowners use Wildfire Shield
Resists ignition repeatedly
Performs across multiple fire events — not a one-time intumescent.
Non-toxic & low-impact
Safe around landscaping, pets, and people. No hazardous off-gassing or runoff.
Qualifies for grant funding
Eligible under many WUI mitigation grants and community fire readiness programs.
Preserves the look of wood
Brush- or spray-applied without changing the fence's aesthetic profile.
Works on existing fencing
Apply to cedar, pine, redwood, and treated wood — no replacement required.
Insurance & compliance support
Document your defensible space upgrade for carriers and code-compliance reviews.
Where defensible space coatings make sense
Single-family homes in WUI zones
Protect Zone 0 wooden fencing connecting wildland to siding, decks, and eaves.
HOAs & master-planned communities
Coordinate community-wide fire hardening of shared fencing and gateways.
Municipal fire mitigation programs
Deploy on city-owned fencing along greenbelts, parks, and right-of-way buffers.
Wildfire grant projects
Match the technical scope required by FEMA, state, and local mitigation grants.
Insurance compliance retrofits
Document an engineered protective coating to support renewal and underwriting.
Wineries & rural estates
Harden long property fence runs without losing the look or replacing miles of material.
Engineered for the wildland-urban interface
Resists Multiple
Re-Ignition
Non-Toxic
Toxicity
Untreated & Treated Wood
Substrate
Brush · Spray · Roll
Application
TIME Best Inventions 2024
Recognition
Made in the USA
Origin
Wildfire Shield is part of NanoTech's TIME Best Invention-recognized Insulative Ceramic Particle (ICP™) platform — the same fundamental technology used to protect bridges, utility infrastructure, and DOT timber lagging in wildfire-prone regions.
Wildfire fence protection FAQs
Wildfire Shield uses NanoTech's ICP™ (insulative ceramic particle) technology to slow heat transfer into the wood — raising the effective ignition threshold under flame impingement and radiant heat. The fence becomes much harder to set off from the radiant heat and ember showers that drive most WUI structure ignitions.