Answer
Insulation on chilled water lines are always wrapped with vapor barrier jackets to eliminate the possibility of vapor entering the insulation, this is because moisture that migrates through the insulation to the cold surface will condense and remain there indefinitely with no possibility of vaporizing and moving back the outside.
Work Step by Step
Insulation on chilled water lines are always wrapped with vapor barrier jackets to eliminate the possibility of vapor entering the insulation, this is because moisture that migrates through the insulation to the cold surface will condense and remain there indefinitely with no possibility of vaporizing and moving back the outside.
