Press Release

Bautex Wall System Achieves High Sound Transmission Class Rating


The Bau­tex Wall Sys­tem, a com­pos­ite insu­lat­ing con­crete form (ICF) man­u­fac­tured by Bau­tex Sys­tems, LLC, has received a high Sound Trans­mis­sion Class (STC) rat­ing, demon­strat­ing the noise damp­en­ing capa­bil­i­ties of the wall sys­tem that are increas­ing­ly required today in com­mer­cial, gov­ern­ment and edu­ca­tion­al build­ing con­struc­tion.

Back­ground noise inside of a build­ing can seri­ous­ly degrade the abil­i­ty of build­ing occu­pants to com­mu­ni­cate and work effi­cient­ly, and can con­tribute to poor over­all indoor envi­ron­men­tal qual­i­ty. The amount of out­door noise trans­mit­ted through the walls of a build­ing, or the noise between adja­cent spaces inside of a build­ing, can be sig­nif­i­cant­ly reduced by installing wall sys­tems with high STC and Out­door-Indoor Trans­mis­sion Class (OITC) per­for­mance rat­ings like the Bau­tex Wall Sys­tem.

The Bau­tex Wall Sys­tem fin­ished with a sin­gle lay­er of plas­ter on the inside wall sur­face and stuc­co on the exte­ri­or wall sur­face achieved an STC rat­ing of 51 and an OITC rat­ing of 47 accord­ing to test­ing per­formed to the ASTM E 90 test pro­to­col and con­duct­ed by ETS-Lind­gren Acoustic Research Lab­o­ra­to­ry, a nation­al­ly accred­it­ed test­ing lab­o­ra­to­ry.

For pub­lic schools in par­tic­u­lar, The Amer­i­can Nation­al Stan­dards Insti­tute (ANSI) has devel­oped the ANSI S12.60Acousti­cal Per­for­mance Cri­te­ria, Design Require­ments and Guide­lines for Schools” stan­dard that aims to cre­ate a class­room envi­ron­ment that opti­mizes speech under­stand­ing and improves learn­ing. As part of the ANSI S12.60 stan­dard, exte­ri­or and inte­ri­or walls of offices, con­fer­ence rooms, and main cor­ri­dors in schools must be rat­ed to a min­i­mum STC of 45, and class­room walls must be rat­ed to a min­i­mum STC of 50. The Bau­tex Wall Sys­tem fin­ished with plas­ter and stuc­co meets these stan­dards for school class­rooms.

High­er STC rat­ings required for spe­cial­ty spaces such as music rooms, cafe­te­rias, and gym­na­si­ums can also be achieved with the Bau­tex Wall Sys­tem by chang­ing the exte­ri­or and inte­ri­or fin­ish­es of the wall. Using the Bau­tex Wall Sys­tem on a project may also help achieve cred­its for the U.S. Green Build­ing Council’s (USG­BC®) Lead­er­ship in Ener­gy and Envi­ron­men­tal Design (LEED®) pro­gram for enhanced acousti­cal per­for­mance in schools.

For more infor­ma­tion on the Bau­tex Wall Sys­tem acousti­cal test pro­to­cols and results, please down­load the full test report at bau​texsys​tems​.com.