I have always considered the E 96 test method to be the “gold standard” for determining the water vapor transmission rate (WVTR) of a vapor retarder material,” says Craig. “However, I have come to appreciate that the F 1249 test method can provide very comparable results to E 96 and is in almost all cases the decided choice for testing very low-permeance materials.
I have always considered the E 96 test method to be the “gold standard” for determining the water vapor transmission rate (WVTR) of a vapor retarder material,” says Craig. “However, I have come to appreciate that the F 1249 test method can provide very comparable results to E 96 and is in almost all cases the decided choice for testing very low-permeance materials.
