I am questioning the application of open cell spray foam insulation on this 2x4 frame house.
As we know it, in order for insulation (fiber glass, mineral wool, cellulose) to be effective, the thermal barrier (insulation) and the air barrier (drywall in my part of the country being Houston) need to be in direct.
So, my dumb question would be, does this also apply to open cell spray foam insulation?
The application on this new build was in my mind improper as the foam was not sprayed in the entire depth of the studs and rafters, leaving big gaps in between each studs and the drywall.
Any advice, documentation on consequences of improper installation would be much appreciated. Thanks.