rFOIL™ 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?
Generally, summer heat gain in metal buildings is primarily the result of radiant energy entering the building. Since rFOIL™ 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 rFOIL™ to reflect. Also, the concrete slab is wicking much of the heat energy from the building during the winter. Radiant energy accounts for about one-half of the heat loss during cold seasons. One other factor affects the thermal properties of a metal building in cold weather. Typically, the sun’s energy actually provides a heat source during the winter. The sun makes the metal surface warmer than the ambient air, and that heat energy is transferred into the building. Installing rFOIL™ prevents this. Although winter heat gain is thermally inefficient, it sometimes makes reflective insulation seem less effective, when it is actually doing exa
Related Questions
- 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?
- rFOIL™ 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?
- 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?
