Textile artists have found tyvek to be an incredible resource not only for the protection of artwork during shipment as well as storage, but also when used as a "textile" that can be manipulated through the application of heat and paint to produce amazing textural and visual effects.
However, recently on a Bookart list, there was an extensive discussion about tyvek and its archival properties - specifically whether or not there should be concern about the durability and longevity of this material. One person stated that a map printed onto a "tyvek-like" material crumbled into uncountable pieces and fell off his wall less than four years after he'd purchased it. Several others recounted instances of tyvek shredding and disintegrating when used to protect outside plants during the winter as well as contractor accounts of finding it deteriorated when used in home construction in less than 15 or 20 years.
I did a google search and also found accounts about tyvek deterioration posted to several different contractor forums (with crumbling being mentioned specifically). Sailors have found that it shows signs of deterioration within just a few weeks of exposure to weather and is therefore unsuitable for use as sails. Additionally, I found the website of Neda Niaraki, a textile designer who has created a fashion line of disposable garments made from soft structure Tyvek. She states, "My garments can be worn up to 12 times before deteriorating."
Clearly more information is needed, but artists need to at least consider whether continuing to use tyvek as part of the artwork itself is wise. While it is true that it is highly unlikely that the art will be subjected to extreme temperature and weather conditions, nonetheless textile artists do use various degrees of heat and apply paints and other chemical based materials to it.
Just something to think about...