Certified Installer 
Acoustical plaster systems
Our scope of work also includes application of acoustic plaster systems:
We prefer Fellert and Scherff acoustic plaster system due to highest NRC rating, No VOC and flexibility of application. It could be easily patched if necessary without need to refinish complete section like in other acoustic plaster systems.
To demonstrate the effectiveness of Fellert Acoustical Plaster, acoustical testing was performed by certified laboratories in the United States and Sweden in accordance with ASTM C423.
All ASTM C423 sound testing for the Fellert system has been
conducted with test samples that contain
all the main components of the system. In a Mounting Type A test for
example, the Fellert acoustical plaster
was sprayed to the 1" Fellert sound absorbing board which was adhered to
the GWB substrate by
the Fellert Adhesive, thereby simulating an accurate representation of
an actual installed Fellert system.
TEST 1
Fellert Ultra Acoustical Plaster on 1-1/2" (38.1 mm) Fiberglass board and 1/2" (12.7 mm) GWB
Test 2
Fellert Ultra Acoustical Plaster on 1"(25.4mm) Fiberglass Board and 1/2" (12.7mm) GWB
TEST 3
Fellert Ultra Acoustical Plaster on 1" (25.4 mm) Fiberglass Board with Air Gap Behind
TEST 4
Fellert Ultra Acoustical Plaster on 1/2" (12.7 mm) GWB
For detailed information please visit the
Fellert acoustic plaster system website.