Air sealing and insulation upgrades before major renovation?

We are in early stages of planning a significant renovation (including potential small addition), which is realistically 2+ years away. Is there any reason to not do air sealing and… We are in early stages of planning a significant renovation (including potential small addition), which is realistically 2+ years away. Is there any reason to not do air sealing and…Read MoreGreenBuildingAdvisor