Why Choose a Fire-Rated Hazmat Locker?
Fire-rated chemical storage is required when hazardous materials must be stored:
- Outside or adjacent to occupied buildings
- Near property lines or public access points
- Within proximity restrictions set by local fire codes
- Indoors, where fire separation walls are required
- In industrial zones where fire exposure risk is elevated
- In processes involving flammable vapors or heat-sensitive materials
Our fire-rated lockers offer non-combustible construction, UL fire-resistant insulation, and engineered separation barriers that maintain structural integrity during high-temperature exposure. This protects chemicals, personnel, and property—and ensures your facility passes local inspections.
Engineered Fire Ratings: 2-Hour to 4-Hour Fire-Rated Construction
US Hazmat Storage offers multiple fire-rated protection levels to satisfy code-driven requirements:
2-Hour Fire-Rated Hazmat Lockers
Ideal for most industrial use cases, these structures provide:
- 2-hour fire separation from occupied buildings
- UL-classified, insulated panel assemblies
- NFPA 30-compliant construction
- Reinforced steel framing
- Exterior/interior fire protection between stored materials and the facility
4-Hour Fire-Rated Hazmat Lockers
Required for the strictest compliance zones, including high-risk industrial, manufacturing, aviation, pharmaceutical, government, and defense facilities.
These units include:
- 4-hour outdoor fire-rated wall and roof assemblies
- Maximum protection for flammable liquids or reactive materials
- High-density mineral wool insulated panels
- Enhanced fire barrier separation
- Optional redundant ventilation, remote monitoring, and advanced fire suppression integration
Both construction types meet or exceed EPA 40 CFR, OSHA 29 CFR 1910, NFPA 30, NFPA 400, IFC, and local authority requirements.
1–4 Drum Fire-Rated Hazmat Lockers
US Hazmat Storage specializes in compact, single-drum and multi-drum fire-rated storage. Perfect for facilities managing small quantities of hazardous materials, these units offer:
1-Drum Fire-Rated Locker
For isolated storage of a single 55-gallon drum containing flammables, corrosives, or regulated chemicals.
Includes built-in spill containment, self-closing doors, natural ventilation, and fire-rated wall assemblies.
2-Drum Fire-Rated Locker
Ideal for small-batch processes, daily use chemicals, and flammable liquids that require immediate but secure access outside of occupied areas.
4-Drum Fire-Rated Locker
Our best-selling configuration, providing compliant storage for a full 4-drum spill pallet.
Add-on options include:
- Drum racks
- Shelving for smaller containers
- Temperature control
- Explosion-proof electrical
- Mechanical ventilation
- Leak detection
- Fire suppression systems
These units offer maximum compliance in a compact footprint, without the cost of a full-scale building.
Scalable Compliance from 1 to Hundreds of Chemical Storage Drums or Fully Custom Multi-Bay Storage Building
When your facility requires more than 1–4 drums, US Hazmat Storage engineers fully custom fire-rated chemical storage buildings to store:
- 1-100’s of drums
- 1-100’s of IBC totes
- Mixed pallets of chemical storage containers
- Bulk flammable material storage
- Temperature-controlled hazardous materials
- Segregated incompatible materials
We deliver:
- Multi-bay layouts
- Internal firewalls
- 2-hour or 4-hour separation between bays
- Explosion-proof electrical systems
- Custom ventilation and HVAC
- Climate stability for heat-sensitive chemicals
- Integrated mixing, dispensing, and pumping areas
- Overhead monorails and drum trolleys
- Roll-up doors and forklift access
If you can describe the workflow, we can engineer a custom-built hazmat building to streamline it.
Compliant Construction for Every Material Class
US Hazmat Storage designs buildings for safe storage of:
- Class I flammable liquids
- Class II and III combustible liquids
- Corrosives
- Paints, inks, dyes, and coatings
- Oxidizers
- Acids and bases
- Reactive chemicals
- Pesticides
- Industrial solvents
- Aerosol containers
- Lithium battery packs (with optional blast relief and detection systems)
Our engineering team will size and configure your building to match the exact requirements of your chemical inventory.
Spill Containment & Environmental Protection
Every fire-rated hazmat locker includes:
- Integrated, sealed steel spill sump
- Forklift-accessible base or steel skids
- Galvanized grating floors
- Leak-tight secondary containment
- Industrial epoxy coatings (optional)
- Double-walled construction available
Containment capacities meet or exceed EPA and SPCC requirements for worst-case spill scenarios.
Ventilation, Explosion Protection & Mechanical Systems
Fire-rated lockers can be equipped with:
- Gravity or mechanical ventilation
- Explosion-proof C1D1 or C1D2 electrical components
- Explosion relief panels
- Temperature control—HVAC or heat only
- Dehumidification systems
- Gas detection and alarm systems
- Integrated fire suppression
- Sprinkler tie-in systems
All systems are designed to satisfy local fire marshals, insurance carriers, and AHJ requirements.
Built for Long-Term, Code-Compliant Storage
US Hazmat Storage construction includes:
- Heavy steel welded base frame
- Insulated, fire-rated panel assemblies
- Reinforced roof structures
- Corrosion-resistant steel finish
- Climate control options
- Tamper-resistant, high-security locking hardware
- Forklift pockets or overhead lifting lugs
- Exterior powder-coat or epoxy finishes
These buildings perform for decades in industrial and harsh outdoor environments.
Turnkey Delivery & Setup
US Hazmat Storage provides:
- Engineering
- Fabrication
- Factory testing
- Delivery
- Forklift or crane placement guidance
- On-site commissioning
- AHJ code compliance support
- Optional training and operation documentation
Buildings arrive pre-fabricated, pre-wired, and ready to use.
Common Applications
Fire-rated hazmat lockers are used in:
- Manufacturing plants
- Chemical facilities
- Paint, coatings & resin manufacturers
- Industrial maintenance operations
- Warehouses & distribution centers
- Government & military installations
- Utilities & power generation plants
- Aviation, marine, and transportation hubs
- Construction sites
- Universities & research labs
- Pharmaceutical manufacturing
- Municipal public works
FAQ — Fire-Rated Hazmat Locker Compliance
A fire-rated locker is built using UL-classified fire-resistant assemblies that maintain structural integrity during a fire for a defined period (2 or 4 hours).
Yes, when storing flammables outside or within proximity limits of occupied buildings, fire marshals typically require 2-hour or 4-hour fire separation.
Yes. Certified spill containment is included in all units.
Absolutely. We offer heating, cooling, and humidity control.
Yes. US Hazmat Storage specializes in large-scale engineered buildings for 100–500 drums, IBC totes, or entire chemical warehouse annexes.