Roof Curbs

Kinetics roof curb isolation systems (ASHRAE type D) are specifically designed for curb-supported rooftop equipment. Rooftop rails consist of upper and lower frames separated by springs and rest on top of architectural roof curbs. Isolation curbs incorporate the roof curb and rooftop rail into their design. Roof curb isolation systems are designed with springs that have static deflections to meet the design criteria.

Roof Curb Isolation Solutions

Vibration Isolation Roof Curb and Rail



Heavy-duty, complete roof curb and vibration isolation rail for over 20-ton packaged rooftop units.

Roof Curb and Vibration Isolation Rail

KSCR 2.0


Affordable, easy-to-install, all-in-one roof curb and vibration isolation rail for under 20-ton packaged rooftop units.

Vibration Isolation Rail

KSR 2.0


Redesigned KSR 2.0 equipment isolation rail isolates packaged rooftop equipment from the roof structure.

Rooftop Equipment Pads



KIP-RT fiberglass rooftop equipment pads are used to control vibration that is being transmitted from rooftop equipment — installed between roof mounted equipment and the supporting curb.

In Curb Acoustical Treatments

Fans and compressors within rooftop equipment can create a significant amount of noise that transfers into the spaces below the roofline. Kinetics in curb acoustical treatments lay on the floor of an existing curb or new curb installation to reduce the noise transfer. The in curb acoustical treatments described below can be combined with a vibration isolation curb and duct silencers to create a system that addresses all the noise and vibration concerns of your packaged rooftop equipment.

RT-7 Acoustical Treatment

STC 37 / 47 / 52 / 60

Exclusively from Kinetics Noise Control, specially designed to control breakout noise from rooftop equipment in curbs, RT-7 is a cost-effective solution and a contractor favorite due to its light weight and overall ease of installation.

NOISEBLOCK™ Acoustical Panels

STC 40 / 43 / 48 / 52

Kinetics versatile NOISEBLOCK acoustical panels are double-walled perforated metal panels. For rooftop equipment, Kinetics specifies 22-gauge perforated panels that are manufactured to fit and laid into the bottom of the curb delivering superior sound absorption (noise reduction) and transmission loss (noise blocking).

KRT Restraint Toggle

Designed to secure attachment of unit to the roof curb. Kinetics KRT Restraint Toggle design allows for a secure attachment without requiring access to the inside of the curb, thus reducing number of restraints required and field labor.

Kinetics ESSR vibration isolated curb system addresses all noise sources associated with packaged rooftop equipment. Here is how:

Vibration from fans and compressors (source 1) and vibration from casing radiated noise caused by duct turbulence and the airborne noise of the fans and compressors (source 2) are controlled with Kinetics high deflection, laterally stable coil spring isolators and high frequency neoprene noise pads.


Duct-borne noise from the supply and return air fans (source 3) are controlled using an aerodynamic acoustical silencer on the supply fan and an acoustical plenum on the return air side - both with minimal pressure drop.


Breakout noise through the bottom of the rooftop unit (source 4) is controlled by the NOISEBLOCK STL acoustical panel located in the floor of the ESSR.

LDR Light Duty Isolation Rail

LDR light duty rail isolation system is a low-cost solution designed to isolate residential style condensing units and other light weight equipment (small fans, mini split systems, etc.). LDR eliminates vibration from penetrating into the structure and occupants below.