Our spring isolation curbs install just like standard curbs, flashing directly into the roof system to dramatically reduce labor time. Built with a rugged, heavy-gauge galvanized steel base and a reinforced top rail, these units are made to endure — no wire mesh, no compromises, no callbacks. We offer two types of isolation design:
Fixed Spring Isolation
- Purpose-built for simplicity and reliability
- Extruded aluminum rail system w/ unit specific spring selection
- Available in 1" or 2" spring deflection
- Ideal for standard rooftop applications where consistent spring height is preferred
- Can be integrated into Cambridgeport curbs/adapters or retrofitted to existing curb systems
- Ships with extra springs for on-site balancing and leveling (if needed)
- Curbs Fully Assembled
- Rail option unassembled
Adjustable Spring Isolation
- Proudly union built in the USA
- Faster installs with standard curb flashing design
- Code compliant, meets ASHRAE, SMACNA, ASTM, ISO, IBC, ASCE, and local codes
- Heavy-duty construction for long service life
- Ships assembled, knockdown, or welded for site flexibility
- Color-coded springs provided on fixed spring rails for easy setup
- Lateral stability built-in for safety and equipment longevity
Available Options
- Wind/seismic ratings and state-specific PE stamps
- Unassembled fixed spring top rail option
- Fully welded adjustable spring rail option
- Fully welded curb construction
- Horizontal supply/return configurations
- Sound barrier packages, filter racks, access doors, acoustic panels
- Lifting lugs for safer handling
Applications
- Commercial rooftops in standard or seismic zones
- Noise-sensitive environments: hospitals, schools, offices
- New construction or retrofit projects
Installation Advantages
- Quick install with minimal specialized tools
- Compatible with industry-standard roofing methods
- Low maintenance, corrosion-resistant materials
- Job-specific instructions included
- Additional springs provided for field leveling when needed
Benefits
- Extend equipment lifespan with proper isolation
- Improve occupant comfort by reducing noise/vibration transmission
- Simplify maintenance with integrated access and service features
Why Cambridgeport Isolation Systems?
- Proudly union built in the USA
- Faster installs with standard curb flashing design
- Code compliant, meets ASHRAE, SMACNA, ASTM, ISO, IBC, ASCE, and local codes
- Heavy-duty construction for long service life
- Ships assembled, knockdown, or welded for site flexibility
- Color-coded springs provided on fixed spring rails for easy setup
- Lateral stability built-in for safety and equipment longevity
