From The Build Show.
In this episode of that ’70s remodel series Stephanie takes us through the final blower door test of this ambitious exterior-focused renovation. What began as a drafty 1970s home with uninsulated attic space, HVAC leaks, and gaps around fixtures has now been transformed with Zip System R Sheathing, attic insulation, air sealing, and upgraded mechanicals.
The results speak volumes: from an initial 7.2 ACH down to 3.8—nearly cutting air leakage in half. Alongside Brett from Indoor Airseal, Stephanie highlights how thoughtful mid-construction testing and smart product choices not only boosted energy efficiency but also saved the home from the brink of a teardown.
With a budget of about $200,000, this project proves you can achieve big performance gains, long-term durability, and a fresh modern look—without a full interior remodel. It’s the perfect setup for the home’s future as a healthy, efficient, and Airbnb-ready retreat.
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