New constructon, insulators left two stud spaces of about 18" each un insulated near the top of the wall. Didn't get it in before sheet rock and builders assured several times he would have the blown in insulation blown into these two adjacent areas on a south outside Texas wall. My concern is a hot/cold zone, even though this is near the top of the slope on a 10' wall. Other than an IR camera and trying to find the joists(insulation must be 18" thick) to wak to thie area, how can I verify these spaces are insulated. Digital thermometer? Thank you.
