Sorry for the low resolution, but that's what this FLIR can do. Outside temperature was 16F at time of photos.
Image of the front of the house. Oldest part is on left, 1894 kitchen addition in the middle (right under cross-hairs), and 1994 addition to the right of that. The big hot spot between the 1894 and 1994 additions is the front entrance, which I can now see radiates quite a bit of heat!
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Closer-up on left (older) half of house. Note I am currently missing storms on the two third floor windows and one second-floor window. I bet you can guess which by the temperature color! All of the stonework is warm, indicating thermal transfer thru the walls, but only around 20 - 22F... which ain't bad on a 16F night. Heck, the soil might keep it almost that warm without me doing any heating inside. The kitchen addition is suprisingly "cool" in color. Thinking about this for the first time now, I don't have an insulation problem there... I just have too many leaks! That kitchen is very drafty.
The other thing that surprised me is how much heat is trapped below the porch roof on the old part of the house. There are no lights or sources of heat in that roof, so it's all natural to the structure. I wonder if folks knew something about this in the 1700's, which we've forgotten today.
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End of house, or actually the original front of the house. Again, note the way the porch roof above the first floor (and the porch floor above the basement walk-out), really holds in the heat. I'm missing one storm on the second floor on this side as well... guess which!
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Back of the old part, showing pretty clearly where one of my woodstoves sits, in this case 3" from the other side of that wall. Outside of the wall in this area is 38F, according to the camera, which I hope might be set up at least half right. The two windows radiating like hell on the far left edge of this photo (just above the FLIR logo) are in the newest addition, and are better than average modern double-pane, but with no storm windows.
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Photo of the rear of the middle (1894) kitchen addition. The hot chimney is our oil-fired boiler, and that glass door with sidelights that's radiating like hell is a high quality but somewhat worn-out double-pane, ca.1990. The wing on the right is the 1773 part of the house.
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Photo of the same courtyard, but this time showing the new wing. The hot chimney hiding under the "32.1" on the thermometer is the same oil-fired boiler. The hot fireplace and chimney in the middle of the photo is the old Jotul F12, sitting about 12" from the inside of the stone fireplace wall. Note the new double-pane windows in this addition seem to radiate hotter than the 1773 windows with storms.
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Photo of more glass work on the new wing.
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Photo of my crappy, poorly insulated, garage doors. That garage is likely only 50F inside, if not cooler. The thing that really caught my eye was the hot spots at the bottom of the walls, likely concrete block under the stucco.
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Looking at these photos, I do not see any
major insulation problems. After reviewing them, I think my troubles are more related to drafts than conduction. I'll get some indoor photos to try and prove that.