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2. Tyvek - Wikipedia

   en.wikipedia.org/wiki/Tyvek

   Tyvek envelopes 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 but restricting air infiltration.

3. Air barrier - Wikipedia

   en.wikipedia.org/wiki/Air_barrier

   Air barriers control air leakage into and out of the building envelope.Air barrier products may take several forms: Mechanically-attached membranes, also known as housewraps, usually a polyethylene-fiber or spun-bonded polyolefin, such as Tyvek is a generally accepted moisture barrier and an air barrier (ASTM E2178).

4. Housewrap - Wikipedia

   en.wikipedia.org/wiki/Housewrap

   A building wrapped with Tyvek-brand housewrap during construction. Housewrap (or house wrap), also known by the genericized trademark homewrap (or home wrap), generally denotes a modern synthetic material used to protect buildings.

5. Vapor barrier - Wikipedia

   en.wikipedia.org/wiki/Vapor_barrier

   A vapor barrier on the warm side of the envelope must be combined with a venting path on the cold side of the insulation. This is because no vapor barrier is perfect, and because water may get into the structure, typically from rain. In general, the better the vapor barrier and the drier the conditions, the less venting is required. [7]

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Pollination bag - Wikipedia

   en.wikipedia.org/wiki/Pollination_bag

   Tyvek: Dupont Company produces non-woven polyethylene which can be converted into bag. This cloth is used as a damp proofing membrane, envelopes and protective clothing amongst other things. This cloth is used as a damp proofing membrane, envelopes and protective clothing amongst other things.