Home Fire Hardening

Enclosed Eaves

Open eaves with exposed rafters are one of the most vulnerable areas on a home or commercial building during a wildfire. Wind-driven embers (firebrands) can enter through unsealed eaves and ignite insulation, attics, or rafter beams. Our enclosed eave retrofits seal this critical gap by boxing in open overhangs with fire-resistant materials, significantly reducing ignition risk. 

Research by Mockrin et al (2023) found that structures with enclosed eaves in the Woolsey Fire zone had up to 75% greater survival rates than those without. Aidan Jones (2024) post-burn analysis of the Woolsey fire concluded that defensible space alone was not enough to protect homes during wind driven fires

Fire Rated Vents

During a wildfire, one of the most common ignition points is through vents. Attic, crawl space, and soffit vents allow dangerous embers to enter the structure, where they can ignite insulation or interior framing. Coldwater Cool Roofing installs CAL FIRE-approved, fire-rated vents that block embers without compromising ventilation.

These vents use:

• 1/8" corrosion-resistant mesh to prevent ember entry
• Intumescent coatings or baffles that expand when exposed to heat
• WUI code-compliant designs for attic, soffit, ridge, and foundation applications

Installed at all key ventilation points, these fire-rated systems are a critical part of any wildfire hardening strategy.

Fire Caulking

Even the smallest gaps in a home’s exterior—around roof joints, pipes, vents, and wiring—can become entry points for embers during a wildfire. We install high-temperature fire-rated caulking designed to withstand direct flame, radiant heat, and ember exposure. These sealants expand and harden under heat, forming a durable barrier against wildfire intrusion.

We target vulnerable areas including:

Roof-to-wall transitions, Pipe and conduit penetrations, Fascia gaps and eave terminations, & Expansion joints and foundation cracks

Our caulking systems are UL-listed, non-combustible, and approved for use in WUI-compliant construction. Applied usually as part of a broader wildfire hardening retrofit, they help prevent ember ignition in hidden, overlooked areas—adding time, protection, and peace of mind.