Guardian Article about spray foam
Spray Foam Removal Certification
“Building Science Corporation did some great testing where they looked at the impact of insulation in assemblies where you have that air gap, because I think folks were concerned that, you know, if you have a layer of air, isn't that defeating the point of insulation?”[1]
Kristin’s episode on healthy homes
[1] https://buildingscience.com/documents/reports/rr-1207-vancouver-field-exposure-facility/view
