What is the Condensation Resistance Factor of a given glass make-up?
Condensation resistance factor or CRF is determined from a guarded hot box test as specified in AAMA 1503.1. Thermocouples are used in prescribed locations on the glass and the average glass temperature is then used to determine the CRF. Since CRF is dependent upon such factors as glass size and the framing system type, the actual value must be determined by test. Based on previous mock-up testing, however, we estimate that a 1″VE1-2M insulating vision glass would have a CRF of 55 to 60. Argon-filling would increase this value to 60 – 65.
