Manufacturing spaces are built from hard, reflective surfaces: concrete floors, CMU walls, exposed steel deck. Machinery, compressed air, conveyors, and HVAC equipment generate sound continuously, and those hard surfaces send the energy right back into the room. The result is reverberation and sound buildup that makes a plant floor louder than the equipment alone would suggest.

Absorptive panels address that buildup. They reduce reflected energy inside the space, which lowers overall reverberant levels and makes speech, alarms, and verbal instructions easier to understand. Absorption is measured by Noise Reduction Coefficient (NRC), a scale where higher numbers indicate more absorption. Worth noting for planning purposes: absorption and transmission loss are different problems. Panels rated by NRC treat sound inside a room rather than sound passing through a wall between two rooms.

Factory selection criteria also tend to include things an office project never considers: fire performance for the occupancy, material that will not shed fiberglass near production lines, VOC-free content for indoor air quality, and panels that can be cut and fit around ductwork, conduit, and equipment.