During a recent energy audit of a high school gymnasium in Wyoming we found some really cool "bar graph like" patterns in the cinder block walls. The outside air temperature was in the upper thirties and the porous cinder blocks were saturated from a recent heavy rain storm. Once we installed our huge blower door fans and started depressurizing the building we noticed these strange thermal images. The exterior walls looked more like "bar graphs". The solution to this porosity issue will be to coat the exterior surfaces with a sealer. The blue in the thermal images is wet and cold wall structures.
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