How many wall penetrations are too many?

We are building a new home in Zone 4a (2,800 sq ft) and are currently working through air sealing our penetrations, which got me thinking how many penetrations, on average,… We are building a new home in Zone 4a (2,800 sq ft) and are currently working through air sealing our penetrations, which got me thinking how many penetrations, on average,…Read MoreGreenBuildingAdvisor