This is Mr. K’s home. His home was built in 19XX and was in much need of both air sealing and better attic insulation. The home was very seasonally uncomfortably hot and cold and drafty.
We inspected the home and found that the home had a lot of air leakage through the ceilings as well as interior walls in the home that were hollow from the floor straight up into the attic which is both a major source on convection and conduction loss for the home.
Mr K had many can lights that we retrofitted TENMAT can light covers before air sealing those too. To perform all this we had to first vacuum out all the old insulation. Prior to insulation removal we did not know the full extent of the attic. We sealed all the small and large penetrations with rigid board and expansion foam before installing a new 13” thick blanket of loosefill fiberglass.
The difference on a home attic retrofit like this is amazing and immediate.