The NRC depends on the acoustical centre and the rising type as you favour. The high acoustical absorption property of acoustic stretch ceiling (New Acoustic) is wonderful for opera house or performance halls, movie theatre complex, auditoriums in schools, day-care centres or buildings which need stylish acoustics.
The micro-perforated acoustic stretch ceilings are original and present the best high acoustical absorption for the wall of room & offices or ceiling application. With or without an acoustical centre, the NEW ACOUSTIC covering will give NRC’s from 0.50 to 1.0.
All XxtraCeil stretch membranes can be treated acoustic (Micro perforation). We apply 2, 50,000 micro-perforations in the stretch ceiling covering per Square meter.
Also, it gives the best ratio between sound absorption and mechanical strength of the membrane