Impact of the Transcontinental Railroad. There are few things in American history that had the impact of the Transcontinental Railroad. Before it was completed, it cost $1,000 to travel between California and New York, and it could take as long as six months to sail around Cape Horn in South America.mpact of the Transcontinental Railroad. There are few things in American history that had the impact of the Transcontinental Railroad. Before it was completed, it cost $1,000 to travel between California and New York, and it could take as long as six months to sail around Cape Horn in South America.
Complete the Seal With Reflective Waterproof Sealing Tape. This single-sided waterproof sealing tape is made of metallised TyvekÂ® and acrylic adhesive, and is ideal for sealing around penetrations, pipework, windows and doors. TyvekÂ® Metallised Tape provides a durable bond and offers high resistance to water and humidity.
DuPontâ¢ TyvekÂ® HomeWrapÂ® can be used either over or under sheathing. When DuPontâ¢ TyvekÂ® HomeWrapÂ® is used under sheathing, it functions only as an air barrier and does not protect the sheathing as a secondary water barrier.es, DuPontâ¢ TyvekÂ® can be installed over old house wrap as long as the existing house wrap is TyvekÂ®. Tyvek HomeWrap, Tyvek DrainWrap and Tyvek StuccoWrap should be covered within 120 days (4 months).