Thermal Barrier Formation
Active compounds form a thin thermal barrier on treated surfaces, absorbing heat energy and inhibiting the pyrolysis chain reaction that precedes ignition in cellulosic materials.
The Science
Cellulose-bonding fire retardancy. Rigorously tested.
Clore Wildfire Defense is a cellulose-bonding fire retardant engineered for high-risk ignition zones. Available in concentrate form (S-B3) at a 1:1 dilution ratio, it can be applied months in advance of fire season. The formula creates a durable chemical barrier on vegetation, inhibiting ignition through char-layer formation and reduced heat transfer.
Unlike conventional retardants laden with toxic metals, Clore is engineered to protect communities, ecosystems, and first responders, without the chemical health liabilities that have long been accepted as the cost of wildfire defense.
Char Layer Promotion
Upon contact with extreme heat, the formula catalyzes formation of an insulating char layer on organic materials, dramatically reducing flame spread rate and structural ignition risk across treated surfaces.
Reduced Heat Transfer
By creating a chemical barrier that inhibits heat transfer into treated material, the formula raises the effective ignition threshold, proven in Intertek testing with 10/10 specimens self-extinguishing on flame removal.
Cellulose Bonding
The formula bonds directly to cellulosic materials in vegetation and wood, integrating with the substrate rather than just coating the surface for longer-lasting effectiveness.
Combustion Chain Interruption
Active compounds interrupt free radical chain reactions that sustain combustion, suppressing flame propagation at the molecular level upon high-heat contact.
UV-Stable Seasonal Bond
Treated surfaces maintain retardant effectiveness through UV exposure, temperature cycling, and moderate wind, lasting through an entire fire season without reapplication.
Clean Biodegradation
When rainfall eventually removes the formula, it breaks down into naturally occurring compounds. TCLP testing confirmed zero detectable arsenic, cadmium, chromium, lead, selenium, silver, or mercury.
Independent Laboratory Results
The data is unequivocal. For people, wildlife, and the environment.
All results below are from independent, accredited third-party laboratories.
Intertek Building & Construction · Report 105544506MID-001
Fire Retardancy Certification
10 / 10
Specimens passed, fire self-extinguished in all cases
- Tested per California Title 19, Section 1237.1, Cal Fire / State Fire Marshal standard
- All 10 specimens exposed to open flame for 12 seconds; fire self-extinguished on removal in every case
- No spread beyond direct contact area on any specimen
- Conclusion: all specified performance requirements met
StillMeadow, Inc. · Study 26204-23 · March 31, 2023
Acute Oral Toxicity
LD50 >5,000 mg/kg
EPA Toxicity Category IV, the lowest possible hazard designation
- Administered 5,000 mg/kg per EPA OCSPP 870.1100 protocol, zero mortality, zero clinical signs of toxicity
- No abnormalities observed in gross necropsy at Day 14
- No carcinogens, reproductive toxins, or GHS-classified hazards
- Confirmed safe for firefighters in direct and prolonged contact
McCampbell Analytical, Inc. · WorkOrder 2409408 · September 30, 2024
Aquatic Toxicity, Rainbow Trout
LC50 = 4,450 mg/L
Very low aquatic toxicity, 96-hr Rainbow Trout bioassay
- Tested via EPA Method 821-R-02-012, 96-hour bioassay, independently verified
- 100% survival observed at all concentrations up to 2,500 mg/L
- Safe for deployment near protected waterways, salmon-bearing streams, and biodiversity-sensitive habitats
- Significantly safer than conventional retardants documented to cause acute aquatic harm
Eurofins Calscience · Job 570-263634-1 · January 2026
Heavy Metals Analysis (TCLP)
0 Detectable
No regulated metals detected, arsenic, lead, chromium, cadmium, mercury, selenium, silver
- No detectable arsenic, cadmium, chromium, lead, selenium, silver, or mercury at reportable levels
- Trace barium detected: 0.218 mg/L, well below all regulatory thresholds
- A 2024 USC study found leading conventional retardants contain toxic metals at 4 to 2,880 times EPA drinking water limits
- Clore Wildfire Defense is in an entirely different category from those products
Clore vs. Conventional Retardants
Based on independent laboratory data and published USC research (Schammel, Gold & McCurry, 2024)
| Safety Metric | Conventional Retardants | Clore Wildfire Defense |
|---|---|---|
| Acute Oral Toxicity (LD50) | Varies; often Category I–III | Category IV · >5,000 mg/kg |
| Heavy Metals (TCLP) | Up to 2,880× EPA limits (USC study) | Zero detectable, all 7 regulated metals |
| Aquatic Toxicity (96-hr LC50) | Documented harm to fish & amphibians | 4,450 mg/L · 100% survival ≤2,500 mg/L |
| California Proposition 65 | Some products flagged for carcinogens | No listed chemicals, fully compliant |
| GHS Hazard Classification | Often classified; labeling required | Not classified, no hazard labeling required |
| Transport Regulation | May require DOT/IATA handling | Not regulated under DOT, IATA/ICAO, or IMO/IMDG |
| Cal Fire Certification | Varies | Certified · License C-027583 |
Proven Results
Tested in the field. Validated by real fires.
100%
Survival rate among 16 homes that faced direct fire or ember exposure after Clore application
16 / 16
Treated homes survived direct fire or ember contact
2024–25 LA Wildfire Season
During the devastating Los Angeles fire season, 16 properties treated with Clore faced direct fire or ember contact. All 16 survived with structures intact, a 100% structural preservation rate in documented real-world conditions.
Intertek Flame Test, 10/10 Passed
All 10 specimens exposed to 12 seconds of open flame self-extinguished immediately upon flame removal, with zero spread from the direct contact area, meeting all California Title 19 requirements.
Cal Fire Vendor Certification
Listed on the Cal Fire Certified Vendors registry. California State Fire Marshal License No. C-027583, compliant with California Health and Safety Code Section 13115.
Ongoing Field Monitoring
Clore actively collects outcome data from treated properties, partnering with fire departments, HOAs, and municipalities to build a growing evidence base for real-world effectiveness.