Reflective Insulation does a great job keeping heat out in the summer, but doesn’t seem as effective in keeping the building warm in winter, especially in unheated buildings. Why?
Generally, summer heat gain in metal buildings is primarily the result of radiant energy entering the building. Since reflective insulation reflects this energy, it is extremely effective at reducing summer heat gain. When it is cold outside, the dynamics change. Unlike the summer months, there is not an intense source of radiant energy inside the building for TVM Insulation to reflect. Also, the concrete slab is wicking much of the heat energy away from the building during the winter. Radiant energy accounts for about one-half of the heat loss during cold seasons.
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- does a great job keeping heat out in the summer, but doesn’t seem as effective keeping the building warm in winter, especially in unheated buildings. Why is this?
