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Foster Products

ZSi Products




Cush-A-Block systems support all of the following applications:

  • Solar Racking
  • Pipe & Conduit supports
  • Duct supports
  • HVAC supports
  • Cable Tray Systems
  • Air Conditioning supports
  • Roof Walkway supports

Testing: Rooftop Supports Have Been Tested By An Accredited Independent Laboratory To The Following:

  • ASTM D575 Method B - Modified - Compression/Deflection
  • ASTM D1171 Modified - Ozone Resistance
  • Freeze/Thaw Environmental Simulation

The channel for Cush-A-Block support assemblies includes a variety of options. The strut can be made in special lengths, finishes, and alloys including Aluminum, Stainless Steel both 304 & 316, PVC coated, Powder coated, Zinc Trivalent Chromium, Pre-Galvanized and Hot Dipped Galvanized. Key Features for Cush-A-Block Rooftop Support Systems

  • 100% Recycled Rubber
  • LEED Certifiable
  • Meets the Buy America Act
  • American Reinvestment Recovery Act (A.R.R.A.)
  • Independent Laboratory Tested
  • Resistance to Freeze and Thaw
  • No Deteriorations
  • All 4 Corners coated with high visibility safety orange for maximum visibility
  • Dampens Vibrations
  • Compatible with most rooftop materials

Cush-A-Block Base Only

The Cush-A-Block is the heart of the system and provides an economical support for gas piping systems, electrical conduit, HVAC equipment and many other applications.

The Cush-A-Block accepts screw fasteners for securing one or two hold straps (not included).

BS-PRB Roller Series

The CBS-PRB Roller series was engineered to support gas and refrigeration pipes.

The pipe roller allows for longitudinal movement of the pipe system.

CBS Channel Support

The flexible CBS Rooftop Support is ideal for supporting a group of pipes/conduit or cable tray. Three channel options shown above provide alternate spacing between the pipe and the rooftop. Each of the channel options have four width options using multiple Cush-A-Block bases.

Custom widths are also available, just contact us with your requirements.


CBS-BR Bridge Support

Provides an ideal support for HVAC equipment, cable tray, refrigeration equipment or walkway systems.

CBS-CE Raised Channel Support

CBS-DS Adjustable Duct Support

The CBS-DS has been designed specifically for ductwork. The telescopic crossbeam allows for easy size adjustments.

CBS-DSFW Fixed Width Duct Support

The CBS-DSFW has been designed specifically for ductwork applications where width adjustment is not required.

CBS-RB Medium / Heavy Load

The CBS-RB supports are designed for rooftop applications with a heavier load bearing.