Yesterday’s townhome warranty inspection. 55 degrees and cloudy outside and 73 degrees inside, furnace running.
See the two IR pics of the ceiling to the attic. Note the clearly defined slightly colder areas. There were several of these in the main living area. Not going to report anything about these, but I am curious as to what is causing them.
Initially, due to the small temperature difference, I though maybe these areas would be under the attic decking for the HVAC access. That there might be missing or improperly installed batt type insulation under the decking. When I got into the attic, I found that there is no decking in these areas. The access was poor but I could see that there was blown certainteed type fiberglass insulation above this room. The insulation install was typical and adequate. Being blown in type insulation, there was variance in the level through out. No clearly define rectangle with less insulation were visible from the attic.
So what is causing the colder rectangles. Not something I normally see and I am curious.