Nrc and cac ratings.
Nrc ceiling tile.
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Mars high nrc acoustical ceiling panels are designed to offer the highest standard in noise reduction nrc or noise isolation 40 cac.
Note that the nrc ratings of these may vary.
When evaluating performance in acoustic drop ceiling tiles you ll want to reference two general ratings.
These acoustic ceilings deliver good sound absorption ceiling tiles with standard sound absorption are offered in a wide range of design options from classic white to inspiring eye catching designs that make.
High nrc ceiling tiles are highly sound absorbing and offer superb acoustical performance for a variety of applications such as large open office spaces computer rooms auditoriums or any space where a short reverberation time and same room speech intelligibility are essential.
Their durability performance and attractiveness make them an ideal choice for an array of spaces.
Nrc noise reduction coefficient is a standard measurement for a material s acoustical absorption ranging from 0 00 no absorption to 1 00 total absorption.
Nrc tells you how much sound a ceiling panel will absorb thereby lessening the noise within a room.
A standard acoustical ceiling nrc 0 55 will normally have an ac of 150.
Fine textured and mold resistant they offer superior sag resistance and high light reflectance values.
Cac ceiling attenuation class is a standard measurement of a ceiling system s ability to block sound between two closed spaces cac values of 35 or greater are recommended to achieve speech privacy.
Defined by astm 1111 the attenuation of sound that travels over a divider and reflects off of the ceiling is measured at human speech frequencies.
For example the nrc rating of ceiling tiles will vary by the the type of material used.
Nrc noise reduction coefficient is a standard measurement for a material s acoustical absorption ranging from 0 00 no absorption to 1 00 total absorption.
Standard nrc ceiling tiles are designed for spaces where controlling sound levels is an important but not a design driving requirement.
Noise reduction coefficient nrc and ceiling attenuation class cac.
Ceilings best suited for use in the open office have ac values of 170 or greater.
An acoustic ceiling product with a 95 nrc rating means that 95 of sound in the room is absorbed while the other 5 is reflected.
If sound absorption is a requirement for your project select.
This chart is simply an estimate for each material and may greater or less depending on how it is made and the type of material used.
Cac indicates the ceiling s ability to prevent airborne sound from traveling between adjacent rooms when the dividing wall does not connect with the structural ceiling which ranges from 0 up to 40 45 for ceiling.
