All houses need air sealing, just because it's a luxury home doesn't mean it's efficient
Channel: Nate the House Whisperer
Date: 09/04/2013

This is an unusual feature in a home, an elevator. The shaft is completely open to the attic and the house, which is a problem. This means that air can leak through the doors of the elevator and up from the utility room at the bottom of it, then straight into the attic where it melts snow on the roof and makes it very uncomfortable in areas around the elevator. 

The shaft needs to be encased with an air seal of some sort. We will likely use a reflective insulation (it looks like tin foil on steroids) with perforations to allow water vapor through it, and then seal the edges with foam, caulk, or foil tape.