https://stream.echo6.co/videos/watch/7b87779e-682d-43de-af4e-325c4101fc4a Zip System 2.0 - https://www.youtube.com/watch?v=rSdb8cCOc6c Smoke Pen we used: https://amzn.to/2Se6Ilu In this video my Builder buddy Doug Cameron is solving a Building Science mystery. He built this new house using his Zip System 2.0 method which should yield a VERY air tight house, but his blower door score is not what he expected. In this video you'll see what we did to find the problem and what was the source of the extreme leakiness. Thanks for watching The Build Show! Follow Doug Cameron here: https://designbuilddoug.com https://www.instagram.com/designbuilddoug/ https://www.youtube.com/c/DesignBuildDoug Follow my work behind the scenes here: http://www.instagram.com/risingerbuild Look for your next Holiday Gift on our Amazon Store! All my favorite tools, gadgets, books, and more! https://www.amazon.com/shop/mattrisinger Sun, 17 May 2026 05:32:54 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/7b87779e-682d-43de-af4e-325c4101fc4a All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.