Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 7 · column 2 of 7 · from the scan, no model involved
photographs of windows, doors, walls and office space, showing cooler areas in cooler (blue) colors and warmer areas in warm (red) colors showing the range of temperatures at the area photographed.
Even in a building where insulation has been pumped in walls (such as was the case as The Link), walls still leak if insulation was not properly installed or a spot missed: for example, a brace in the wall can prevent insulation materials from going where they are supposed to go. Grisby pointed out that there is no way to verify visually or by sound if a wall has been properly filled with insulation: infrared is the only way to do it. Infrared can show where insulation and air-seal are not aligned: for example, light fixtures punched through an already insulated ceiling disturb the insulation and create multiple weak spots.
The U.S. Department of Energy estimates that air leaks in a home typically cost 15 percent to 30 percent of a house heating and cooling costs (and 31 percent are due to floors, walls, and ceilings according to the DOE Energy Saver booklet).
Suggestions for The Link included recommendations for insulating specific band joists, weatherstnpping a particular door (most of them already are
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