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Guides, Manuals & Inventories

Inventory of Acoustically-Tested Mass Timber Assemblies

This evolving document provides detailed information on mass timber assemblies that have been acoustically tested in the U.S., including STC and ICC ratings and links to the associated test reports.

T3 Minneapolis interior
T3 Minneapolis / Perkins + Will / photo Corey Gaffer

Categories include: 

  • Cross-laminated timber (CLT) floor assemblies with and without concrete/gypsum topping, ceiling side exposed
  • CLT-concrete composite floor assemblies, ceiling side exposed
  • Mass timber floor assemblies with raised access floor or wood sleepers, ceiling side exposed
  • Nail-laminated timber (NLT), glue-laminated timber (GLT) and tongue-and-groove decking floor assemblies, ceiling side exposed
  • Mass timber floor assemblies, ceiling side concealed
  • Single CLT and NLT wall assemblies
  • Double CLT wall assemblies

Companion paper: WoodWorks’ Acoustics and Mass Timber: Room-to-Room Noise Control