Acoustical Insulation Solutions
Our acoustical insulation products are often the core of an asthetically pleasing office panel or sound proof furnishing. We provide fabrication and distribution of acoustical insulation for major suppliers of sound reduction systems that are chosen by Architects and Interior Designers. We also provide acoustical products for industrial and OEM insulation applications.
Today, almost every new COSTCO building employs the EJ Davis Sound Reduction Curtains for noise control within the retail environment.
Sound Stop Curtains
Sound Stop Curtains can reduce over-the-wall loudness in offices, classrooms, hospitals and other suspended ceiling areas by as much as 30%-50%.
Airborne sound waves striking the surface of the EJD Sound Stop Curtain are transmitted by the diaphragmatic action of the aluminum skin to the millions of tiny, dead air pockets between the fibers of glass that make up the central blanket. Once in this blanket, most of the energy of the sound waves is quickly absorbed.
Flexible, light and non-combustible, the EJD Sound Stop Curtain is specially treated fibrous glass enveloped in an outer lininga reinforced aluminum faced wrapperfitted with grommets along the selvedge edge to effect easy hanging from the underside of concrete arch, or floor above and from there down to the top of the partitioned area below.
Components in the EJD Sound Stop Curtain have been tested and approved by Underwriters Laboratories, Inc.
Using the EJD Sound Stop Curtains above problem partitions will result in a total attenuation factor of 40 decibels minimum so that over-the-partition noise is dampened to a tolerable level. Privacy is assured both parties. These are findings in accordance with AMA 1-11, two room test method. In terms of cyclic sonic range of 250 to 4000 cyclesa range wherein the majority of noises from speech, music, appliances and equipment generally fallthis is a highly significant control factor!
It must be remembered, however, that effectiveness is limited by inadequate design, Care should be exercised when designing to eliminate the following leaks. Stagger doors across hallways, seal doors at top and sides. Use automatic toehold closers at bottom. Avoid back to back wall switches or outlets. Eliminate where possible all penetration, caulk holes made by wiring or piping. Line ducts with absorptive materials to soak up noise
QuietZone™ Wrapped Absorber
The QuietZone Wrapped Absorber is a highly efficient tuned noise absorber designed for applications where mid to low frequency absorption is needed. The product consists of a semirigid fiber glass core completely encapsulated within a 2 mil thick reinforced foil/polypropylene cover. The board like absorber offers good structural integrity and can be used in temperatures ranging from -40°F to 240°F.
The Product is available in standard sizes up to 4’ x 8’ and in thicknesses of 1 and 2 inches. It has an NRC rating from 0.70 to 1.00, depending on the type of mounting used. (See ASTM Test Data below.) It is suitable for applications where low flame and smoke emissions are required.
QuietZone Wrapped Absorber is designed to control reverberant noise in the workplace where elevated noise levels can effect quality and productivity. The rigid panlels can be mounted directly to the wall (Type A mount) mounted withi a 2” air gap behind the panels (Type J mount), or installed within drop ceiling grids (Type E 400) making them a highly versatile, effective and cleanable application.
Features and Benefits
QuietZone Wrapped Absorber has an NRC rating up to 1.00. The product is tuned for mid and low frequency response, can be easily cleaned and has a high light reflectance.
Wide Temperature Ranges
QuietZone Wrapped Absorber can withstand operating temperatures from -40°F to 240°F.
QuietZone Wrapped Absorber contains no lead.
The product is available in various sizes and thicknesses and with reflective foil or bright white polypropylene facings.
QuietZone Wrapped Absorber is tear and puncture resistant and offers oil and chemical resistance. The product is also moisture resistant and will not rot, shrink or cause metal corrosion.
Easy to Install
QuietZone Wrapped Absorber installs using adhesives or mechanical fasteners.
QuietZone Wrapped Absorber is virtually maintenance free and can be steam cleaned as needed.
QuietZone Wrapped Absorber is an attractive wall or ceiling mounted product which can reduce interior plant anbient noise levels. The product can be used in the following settings:
- Noise absorbing panels for OEM
- Absorptive linings for existing metal housings
- Engine housing liners
- Absorptive lining for factory walls or other reflective surfaces
- Alternative to drop in ceiling tiles.