Understanding and Controlling Condensation in Metal & Steel Buildings
This entry was posted on January 5, 2012.
Adding insulation has a positive impact on energy consumption, but it does not mean that more or thicker insulation will reduce moisture problems. As metal buildings are made more airtight, their thermal efficiency increases. Interior moisture however is less likely to be reduced by the often drier outside air.
Moisture will occur anytime air comes into contact with a surface that is at or below its dew point temperature. If you know the air temperature and relative humidity you can predict the temperature at which condensation will form. Use this chart to help you predict dew point temperature in your building.
Example: If your metal building's inside temperature is 60°F and relative humidity is 50% then the dew point of the area is 41°F. Water will condense on any metal coming in the building that is below 41°F.
Insulation such as reflective bubble foil is an economical means of reducing this problem. The material provides R-Value in metal building applications and is a vapor barrier with sufficient perm ratings to help control condensation.
Finally, the proper ventilation of interior areas and air spaces above insulation is essential. In all metal buildings, natural or mechanically powered ventilation is always the most effective means available to help control moisture in a buildings interior.
Hopefully you find this post helpful. Thank you for purchasing your Tempshield radiant barrier insulation at the InsulationStop, the pro's stop for the best quality and best insulation prices.