Designing Mass Timber Floor Assemblies for Acoustics

Technical guidance on acoustic design for mass timber floor assemblies in multi-family and commercial buildings. Addresses unique acoustic challenges of mass timber construction, asymmetric assemblies when structure is left exposed, and methods to improve acoustic performance through adding mass, noise barriers, and decouplers. Covers STC and IIC ratings for bare mass timber panels, concrete/gypsum toppings, acoustical mats, and assembly strategies. References companion resources including "Acoustics and Mass Timber: Room-to-Room Noise Control" and inventory of acoustically-tested assemblies.