In many parts of the country where acoustic tests are not mandated prior to completion, there has been a growing number of class-action suits and corresponding renovations to multi-family developments. Often, one of the most straight-forward mitigations developers and architects can make is adding a flooring underlayment to reduce structure-borne noise in units above; mainly, footfall.
We recently treated a facility in Austin, TX that experienced superior IIC and STC ratings in their Open Web Truss flooring system by implementing the Floor Blokker membrane beneath the hardwood floors. After installed, an independent acoustical consulting firm, BAI, performed fields tests and found an ASTC of 58 and AIIC of 52. The corresponding lab test values are 63 and 57, respectively.
75,000 square feet of Floor Blokker was installed at less than $1/sq ft and this luxury apartment complex was able to completely eliminate noise complaints and reduce long-term tenant turnover.