House Wrap Now the roof was at last in place it was time to make the home weatherproof . The first stage was to protect everything with " house wrap " . This is a semi permeable material which allows the building to breathe but prevents rain from penetrating . It is similar to " Gore-Tex " in clothing allowing water vapour to escape but keeping liquid water out . It comes in 3 foot and nine foot rolls . I bought nine foot rolls but as I was working on my own cut some of it in half to make it easier to fit . The product is simply wrapped around the whole building initially spanning window and door openings and stapled in place . A hammer stapler is a good investment here . .There are also special fittings but in my view they are too expensive to justify their use . Lets hope the manufacturers do not work on the legislators to mandate them at some time in the future . The lowest piece overlaps the foundation by about six inch...