So the panels are coming down for the new build, took the opportunity to do an average of four measurements as asked.
Basically each corner of the listening chair, pointing outwards. maybe two and a half feet deep by three feet wide, and one and a half feet difference in height (arm of chair vs top of chair)
As before, (at least in the FR department) very little difference between two layers and three layers of the ceiling insulation
Does nothing to change my decision to remove the third layer.
Here is the average of two layers of ceiling insulation vs three layers plus compressed f/g facing
I have left the two layers in there, so no average measurements for one and none...well at least not now. If it comes up I will get them then.
On to the build, with pics....and of course measurements.
fingers crossed it does help eh?