We've used both 'Zip' sheathing (https://zipsystemrevolution.com/10) as well as typical plywood for the airtight layer in Passive House projects in the past and have had good results. Of course the important part is taping / sealing all the... (More)
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If power goes out just crack a window. The CO2 will normalize. You do not need to open a window fully for this to happen
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