page_title: Tyvek
section_title: Construction/engineering
hierarchical_section_title: Tyvek / Uses / Construction/engineering
caption_attribution_description: Tiếng Việt: Phong bì FedEx giấy Tyvek của Dupont
context_page_description: Tyvek is a brand of flashspun high-density polyethylene fibers, a synthetic material; the name is a registered trademark of the DuPont company, known for their production of chemicals and textiles. Tyvek is often used as housewrap, a synthetic material used to protect buildings during construction, or as personal protective equipment against lethal viruses such as SARS-CoV-2. The material is difficult to tear, but can easily be cut with scissors or a knife. Water vapor can pass through Tyvek, but liquid water cannot. All of these properties have led to Tyvek being used in a variety of applications.
context_section_description: Large sheets of Tyvek are frequently used as "housewrap," to provide an air barrier between the outer cladding of a structure and the frame, insulation, etc., allowing water vapor to pass yet restricting air infiltration.
  Tyvek is used in archery to construct waterproof target faces, replacing paper.
  Tyvek was used to cover and protect the Reaction Control System (RCS) thruster ports from water and debris while the shuttle stack was exposed on the launchpad during the latter years of the Space Shuttle program. The Tyvek covers were dislodged shortly after ignition and before the shuttle cleared the tower, posing no strike risk as the shuttle was travelling below 100 MPH.
  Tom Sachs used Tyvek for the outer shell of the spacesuits used in his Space Program series of artworks.
caption: Tyvek envelopes
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