Passive House BKLYN

Energy Revolution in a Brooklyn Townhome

Building Envelope

Passive House BKLYN Building Envelope Model

Passive House BKLYN Walls

RoofPassive House BKLYN WindowsPassive House BKLYN Air Barrier 1Passive House BKLYN Air Barrier 2Passive House BKLYN SlabsPassive House BKLYN Thermal BridgePassive House BKLYN Therm Models


4 responses to “Building Envelope

  1. Cassandra January 13, 2010 at 2:52 pm

    Do you have clearer images of the building envelope? I’m interested in how you dealt with the thermal bridging problems between floors.

    • passivehousebklyn January 14, 2010 at 10:31 am

      Thermal bridging is not a concern for us between floors because it is all within the thermal boundary of the building. Where the floors meet the exterior, the rim joists have all been spray foam insulated. Unfortunately, we don’t have any other/better images at this time. We will definitely post more, if/when we can. Thank you for your comment.

  2. T Simister May 11, 2010 at 9:15 am

    Is there any concern that insulating from the inside will cause the brick to experience freeze / thaw cycles and colder temps than it previously experienced?

    • passivehousebklyn July 14, 2010 at 11:25 pm

      Yes, it was a concern. We limited the thickness of the insulation specifically due to our concern about freeze/thaw for the exterior brick based on recommendations from Building Science experts. In the New York City climate zone it is believed that the 3″ of closed cell foam would be still provide enough heat to the brick to keep freeze/thaw damage from occurring. To our knowledge, there are not any concrete studies done on this issue for the New York City climate zone.

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