Frustrated with excessively high heating bills necessary for this gymnasium they hired us to perform an infrared energy audit. We immediately discovered the problem - porous concrete blocks that held moisture from rain and snow which radiated those cold temperatures into the gymnasium. These thermal images taken during a blower door test clearly show the cold cinder blocks evaporating the cold moisture to the interior. The solution is as simple as coating the exterior walls with a Polyurea Elastomer coating such as the AMP-100 from SPI. If you are experiencing excessively higher than normal heating costs, you should seriously consider having an infrared energy audit performed on your school, municipal building or commercial business.   04/07/2010