The attic is blown rock wool. I’m probably going to have new stuff blown after I finish the remodeling and get the ceiling closed back up. I’ll have to make sure I don’t get idiots that cover the outside soffit vents and stop the airflow in summer. The bat in the wall is R11, according to the printing on the very brittle backing. Not worth tearing down all the sheet rock for a couple more digits, but I still have some R14 that I plan to use to replace what I’ve exposed. NONE of the walls were sealed behind the cabinets, so you can only imagine the mess from cockroaches (waterbug or wood roaches) coming and going at will. Thank the heavens it isn’t the little brown German roaches. There’s several spots where the old batting has settled leaving the top edge of the wall open. I had vinyl siding done about 8 years ago which included 1/2” thick underlayment, so some improvement done then. If I weren’t living here and was remodeling with a blank check, I’d GUT the house and start over, including replacing all the insulation, completely overhaul the electrical system and plumbing, etc. But we don’t have that kind of time or somewhere else to live in the meantime. I’ve already done a few things for efficiency. Double pane windows, ridge vent on the roof, siding with underlayment, new HVAC and water heater with better EER. I’d have to own this place a lot longer than I’ll live to get any significant ROI. As for the roaches, when I get done with the work, they’re gonna have to use the door like the rest of us do, and better get my permission (which of course will not be granted and will more likely be met with a blast from the Bug-a-Salt gun my stepdaughter gave last Xmas). All the activities seem to have already made the roaches realize they should be somewhere else. I’m not a very welcoming host to some uninvited visitors. The primary traffic appears to the wall behind the stove, which had several holes in it from lazy installation work as well as large gaps in the drywall from not being properly finished before installing the cabinets. Finishing is time consuming and expensive, I get it, and making a buck is the name of the game and n home construction. But I’m my grandfather’s grandson, and I go ballistic when I have to fix sloppy work that was done wrong to start with. He was a cabinet maker/carpenter, and I had the privilege of working with him between high school and college and got a lot of invaluable experience through his tutoring, strangely enough about the time this house was being built. The building trade was already in trouble then. Quality craftsmanship is truly a thing of the past in the building trade because of the pressure of profit margins. So it’s up to owners to fix the screwups left by poor craftsmanship and “blind” building inspectors. IF owners have any clue about what they’re looking at. The difference between “acceptable” and “right” ways of doing things is a very wide gap, and only seems to be getting wider.