net zero | passive house, maryland: blown away by the first blower door

January 5, 2015

The seams have been taped, the membranes have been sealed and not a creature was stirring.  We seized the moment to conduct our first blower door test and assess our Passive House progress.
tape and membranes
We are thrilled to report a .2158 ACH50 at this initial stage.  The results brought great pride to the guys at Gosnell Builders who are putting this thing together and shocked Mark Watkins, our Rater with his lowest number ever recorded.
blower door
Thanks to our great team for working together and always being willing to learn some new tricks.