What is the Function of House Wrap?
House wrap, or building wrap, is used in almost all homes built today as a barrier against moisture and wind. It is made from high-density polyethylene (HDPE). The width of a roll is sufficient to cover one story of a building when applied horizontally. Does this Spark an idea?
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Purpose
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House wrap serves a dual purpose--it prevents exterior elements such as moisture and wind to penetrate, and it permits water vapor to escape. It attaches easily to exterior sheathing with the use of a staple gun, and corners are tucked around the rough openings of windows and doors.
Controls Air Infiltration
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House wrap reduces air infiltration into the home. Too much air infiltration can encourage the growth of mold and mildew where the interior and exterior walls meet.
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Energy Savings
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According to Energy Star, a U.S. Environmental Protection Agency program, reducing air infiltration can trim your energy bills by 25 to 40 percent.
Durability
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House wrap is resistant to ultraviolet light and can remain uncovered for up to four months.
Appearance
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Most house wrap material is imprinted with the brand name of the manufacturer. Although the house wrap is eventually covered, some home builders pay to advertise their name by having it printed on the wrap.
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