The Difference Between Vents and Vapor Barriers

The mode of action is different: Vents are mainly a functional material laid on top of the insulation layer. The function of this material is to prevent outdoor rainwater from entering the insulation layer. However, the vapor barrier film is a kind of protective film used as a vapor barrier layer, and this protective film is generally in the lower layer of the insulation layer. One is to act on the top of the insulation layer, and the other is to act on the bottom of the insulation layer, so the way of action is different.

The basic function is different: the main function of Vents is to prevent rainwater from entering the insulation layer, and also to discharge some moisture generated in the insulation layer to keep the insulation layer dry for a long time. However, Vents play the role of moisture-proof and steam-proof, which can effectively prevent indoor moisture from penetrating into the insulation layer.

The basic impact is different: Vents have a strong protective effect on the insulation layer, so they will not affect the service life of the insulation layer. However, the insulation effect of the vapor barrier film is different, which will affect the service life of the insulation layer at this time.