Sound Absorbing Concrete
Up until now it wasn't possible to achieve a concrete look and absorb sound. Now, you can get the concrete aesthetic without sacrificing performance. Achieve an NRC up to 0.90 with a completely monolithic ceiling/wall system.
how it works
- Fiberglass panels are adhered to the substrate. Most flat substrates are suitable, with the most popular being sheetrock (gypsum board) with a level 1 finish. The system can also go up to grid.
- Non-bridging cotton-based plaster is spray applied over the fiberglass
- The concrete acoustical coating is troweled smooth
The secret is in the finishing. The concrete look on the surface is a non-bridging acoustical coating that allows sound to pass through and be absorbed by the fiberglass behind it. The key is that it doesn't fill the microscopic air gaps like a regular paint or other material would.
No control joints are necessary, no matter how large the space. If you wanted to apply 20,000 square feet of a concrete ceiling with not a single reveal, joint, or gap - this is the way to do it.
Pricing ranges from $25-55 per square foot installed, depending on the geographical location and complexity of work. For specific pricing, please contact firstname.lastname@example.org, or call 888.692.7377.
Acoustical Testing Data
The Fellert 1 inch concrete system achieves an NRC of 0.80 when applied directly to the substrate (gyp. board).
North America Standard
ISO 354 and ISO 11654
The Fellert 1.5 inch concrete system achieves an NRC of 0.90 when applied directly to the substrate (gyp. board).