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Just an observation to share ...
Beginning a 'complete gut' remodel; opened the outside walls of one room yesterday. House is a 1957 ranch, south of the Mason-Dixon line.
Wall framing standard 2x4's, with solid lumber headers -appx., 4x12 (try to find that sort of lumber now)- completley filling the space between the tops of the windows and doors, and the top plate. Insulation liiks to be 1-1/2" paper faced rock wool.
Or, it's SUPPOSED to be. Over a total outside wall length of about 22-ft., three of the stud bays lacked any insulation at all over about a 4-ft. section. One was missing the insulation in the middle, while the others had the gap at the top of the bay. That's 3 out of 12 bays missing insulation. Guess the guy was short a roll!
Taking that together with the space occupied by windows and headers, that's about 10-ft. of a 22-ft wall that lacks effective insulation. Pretty shocking.
The insulation was installed with the flanges of the paper stapled to the inside of the studs- meaning that there was essentially no depth to the insulation at all, along the studs. Over time, the paper had degraded to the point where it was as brittle as fireplace ashes.
The good news is that the wood is free from mold and insect damage. Nonests or clusters of vermin were found ... just one silverfish spotted.
Now ... for some sommentary and speculation:
First off, how typical is this of construction? The best barn won't keep the horses in if the doors are left open.
Next .... does anyone thing a bit of foam around the outlets and caulk around the windows will make any difference?