Alderbrook Resort & Spa

Renovating a Historic Resort

Our team has been involved with all aspects of acoustical design in the complete renovation of the historic Hood Canal Resort in Union, WA.  The new Alderbrook Inn includes a lodge, cabins, restaurant, and guest rooms.  A new wing including a spa, ballroom, and guest rooms has also been added.


The renovated building was designed to achieve a HUD grade I, luxury performance, for guest units.  The new ballroom and restaurant lounge were created with an acoustic environment fit for performances.  Particular attention was made to isolate sound from the restaurant/lounge to guest rooms, and to prevent intrusive noise from the pool building mechanical equipment to the surrounding neighborhood.


We worked with the team at CollinsWoerman to develop drawings and details to achieve the luxury performance standard.  In the existing building, we focused on improving partitions and controlling mechanical noise.  Our recommendations included details for noise and impact isolation between units, as well as interior treatments for the new conference rooms, ballroom, restaurant, spa, pool, and lobby.  We developed specific wall and floor/ceiling assemblies for sound isolation in the lounge and ballroom.  Specific recommendations, including AutoCAD drawings, were developed in preventing noise to the surrounding neighborhood.  In addition, site inspections were timed during construction to inspect framing, drywall construction, and mechanical equipment installation.  Testing was performed to document the completed acoustical performance within the guest units and for the control of noise from the ballroom to guest suites above.

Additional Involvement:

Hood exhaust from the restaurant required heavy gauge ductwork, rigidly attached to the fans.  Isolation down through the structure was required to prevent noise from going to commercial and residential spaces.  Heat pumps were reviewed for quality with the mechanical engineer before installation.