Prefab Whistler Passive House celebrates “Firstfeier”

Constructing the assembly for the Whistler Passive House Duplex.

After about nine months of careful planning and preparation, the moment of truth arrived last week for the Whistler Passive House.  The questions on everyone’s mind:  Will the Prefab wall, roof and floor panel system fit, and how long will it take to put together?  Well, the crew started on Tuesday August 23rd, and on Saturday August 27th at 1.30pm, 4.5 days later, the assembly for the building shell was complete.  Reason enough to raise our glasses and have a “Firstfeier”, as they say in Austria.

The construction crew of developer and builder Durfeld Constructors and visitors alike were extremely happy with the smooth and literally flawless assembly of the structure for this first Passive House using the panelized, high performance prefab system.  The assembly was manufactured by BC Passive House out of Williams Lake and insulated using cellulose blow in.  Also interesting was the use of cross laminated timber (CLT) for the second level floor decking.  CLT  is a highly innovative and strong building material, now produced right here in BC by Structurlam out of Penticton.

We are now all eager to see how this panelized system performs when it comes to airtightness.  Remember, we must achieve 0.6 ACH at 50 pascal pressure in order to achieve the stringent Passive House standard.  The precertification review of the project was completed a few months ago by Passive House Institute US.

We are very excited to have played a small role as architectural designer and Passive House Consultant for this project.  We will keep you posted on its progress…