HUSH BLOCK - Flexible Sound Barriers

Treatment Strategy

• PathDirect
• Source Structure

Application Use

• Industrial In-plant
• Industrial New Con.
• Architectural Walls/Ceilings
• OEM
• HVAC

• RLV styles are USDA approved
• Durable construction
• Lead and asbestos free
• Furnished in easy to cut and install rolls 48" or 54" wide
• Good corrosion resistance
• Self-extinguishing
• Class A (model LV-100-CLA) fire rated designs available
• STC acoustical ratings from 20 to 31
• Can be combined with foam or fiberglass absorbers

• Drywall sound partitions and walls
• Plenum/crosstalk barriers
• Pipe and duct wrap
• Acoustic floor mats and carpet underlayment
• OEM custom die cut parts
• Housing lines and machinery covers
• Area dividers and curtains
• Flashing around wall penetrations
• Clear barrier strip curtains
• Ceiling tile barrier backing

BRD HUSH BLOCK flexible sound barriers are limp, tough high temperature-fused vinyl loaded with non-lead fillers. They are available in reinforced construction with a polyester mesh for maximum tensile strength and where the material shall free hang and support its own weight. Non-reinforced styles are more economical where the barrier will be included in another wall, ceiling, housing, cabinet, floor, etc. and the barrier weight is supported by another structure. Clear vinyl barriers for strip curtains and windows are also available. Special class A, marine and other barriers are available to meet customer needs.

A built-up system using alternating layes of HUSH BLOCK loaded vinyl applied to the inside of a rooftop unit curb will reduce radiated noise from the bottom of the unit which can transmit down through the roof deck and leak down around the supply and return duct openings. The roof decking should be flashed to within 1/2" of duct walls before application of HUSH SEALANT acoustical grade caulk. The above picture and top left detail illustrate this application. If the roof curb is a plenum exposed to the airstream, HUSH FLEX Class A composite material ABAC-111N should be used in a similar double layer configuration.

• For recording and broadcast studios, common walls in apartments and condominiums and even offices needing more privacy, staggered-stud wall construction is recommended. Consider that a standard 4” wall is capable of stopping approximately 25 to 33 decibels of noise at the speech and music frequencies. A staggered-stud wall uses essentially the same materials, but is capable of stopping up to 42 decibels of noise.
• To maximize the noise reduction through a staggered-stud wall, weave a floor-to-ceiling layer of HUSH BLOCK NRLV-100 barrier through the wall as shown above.

• In offices with suspended ceiling systems, walls often only extend to the drop ceiling. Noise can "leak" from office to office through the open cavity between the original ceiling and the drop ceiling.
• To reduce noise leakage, create wall extensions with HUSH BLOCK barriers by fastening the barrier to the original ceiling and letting it hang down onto the suspended ceiling panels.