If the roof includes ridge ventilation, the breather membrane must be cut on each side of the ridge to ensure the path of ventilation is still clear. If there is no ridge ventilation, the breather membrane should go over the ridge, and overlap each side of the ridgeline by the required overlap. Roof valleys

Coccolini, Federico; Perrone, Gennaro; Chiarugi, Massimo; Di Marzo, Francesco; Ansaloni, Luca; Scandroglio, Ildo; Marini, Pierluigi; Zago, Mauro; De Paolis, Paolo; Forfori, Francesco; Agresta, Ferdinando; Puzziello, Alessandro; d'Ugo, Domenico; Bignami, Elena; Bellini, Valentina; Vitali, Pietro; Petrini, Flavia; Pifferi, Barbara; Corradi, Francesco; Tarasconi, Antonio; Pattonieri, Vittoria; Bonati, Elena; Tritapepe, Luigi; Agnoletti, Vanni; Corbella, Davide; Sartelli, Massimo; Catena, Fausto (2020). "Surgery in COVID-19 patients: Operational directives". World Journal of Emergency Surgery. 15 (1): 25. doi: 10.1186/s13017-020-00307-2. PMC 7137852. PMID 32264898. Costa Rica (solely their 20 colones bank note, Z series), [17] the Isle of Man, [18] and Haiti [19] have made banknotes from Tyvek. These banknotes are no longer in circulation and have become collectors' items.Doctorow, Cory (February 2012). "Clever-folding tyvek San Francisco map, with out-of-the-way landmarks". Blog Post. Boing Boing . Retrieved 5 September 2012. The LIGHT WING - the UTLab Shoes Official Store | THEUTLAB.com". Archived from the original on 2013-06-28 . Retrieved 2013-06-17. History of Weather Barrier". www2.dupont.com. Archived from the original on 2012-10-05 . Retrieved 2018-11-28. On roof valleys, ensure the breather membrane is extended by a minimum of 300mm on each side, measured from the centre of the valley. At abutments, the underlay should be turned up by at least 100mm – this will create a secondary water-resistant barrier. Roof verges

Timber frame buildings need protection from external weather conditions, and also against internal moisture conditions. Timber frame permeable membranes such as Tyvek Housewrap protect the fabric of the building from rainwater penetration during construction, before external cladding is completed. Not only does timber frame permeable membrane protect the structure during construction, but also creates an airtight seal on the walls, which helps prevent heat loss. So choosing a breather membrane for walls can be ideal for those colder months.We also offer breathable felt membrane.Engineered to optimise moisture management and air circulation, our breathable felt membranes effectively prevent condensation buildup while promoting a healthy indoor environment. Enjoy prolonged structural integrity, as these membranes act as a reliable barrier against water infiltration while allowing trapped moisture to escape. Whether for roofing or wall applications, our breathable felt membranes ensure superior protection, energy efficiency, and durability. In 2017, the DuPont company merged with another chemical company, The Dow Chemical Company to form DowDuPont. DowDuPont currently manufactures Tyvek at the Spruance plant in Richmond, Virginia, and in Sandweiler- Contern, Luxembourg. In 2018, DowDuPont announced plans to expand the Tyvek production capacity of the Sandweiler-Contern factory. [6] Scientific characteristics and properties [ edit ] Tyvek USPS Express Mail envelope Adhesion and bonding [ edit ] Dashcam on a Space Shuttle - FRONT WINDOW launch. 2 March 2011. Archived from the original on 2021-12-22 – via YouTube. This Tyvek Supro underlay can be used for a wide variety of applications including cold, hybrid and warm roofs. It is also perfect for wall and floor installations, low-pitched metal roofs and Scottish sarking board systems. Designed to withstand high temperatures and prolonged UV radiation while also offering superior moisture and air management for residential and commercial buildings, it comes with full IAB and BBS approval for use in all pitched roof structures. Features & Benefits: DuPont Tyvek Supro Breather Membrane Felt Underlay Roll - 50m x 1m DuPont Tyvek Marks 40 Years of Energy Efficiency and Protection". DuPont. Archived from the original on 2008-02-09.

Tyvek is used by the United States Postal Service for some of its Priority Mail and Express Mail envelopes. [15]In 2011, fashion retailer and manufacturer American Apparel included white Tyvek shorts as part of its range. [21] Timber frame breather membranes have been manufactured to be slightly thinner and less heavy duty than their breather membrane counterparts. This allows them to be installed vertically, making them perfect for use in timber frame construction.