In construction in Central Europe are in use vapour barriers, in special cases more precise as vapour retarders. These enable the drying of building materials such as insulation, if moisture has coming in. On the other hand, these prevent as second barrier the penetration of water from the outside, such as dripping water by rain. The effect is analogeous to some outdoor clothing. A common installation in Central Europe is, from outside to inside: roof tiles - laths - air layer (2...4 cm) - vapor retarder - insulation.
Nowadays, predominantly is used for that polyethylene or polypropylene textile with a plastic coating. The problem is that the resistance of that plastics decreases with increasing temperature. The vapor barriers may decompose on the time.
There are materials available with a significantly higher stability such as glass fibers and PTFE. These materials are already used in building construction. But, to my knowledge, not as a vapor barrier.
My question is therefore: Are glass textiles with a slightly open-pore PTFE coating also used as vapor retarders in buildings?
If not, why not? Or what are other suitable alternatives?