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If you insulate the attic floor, it is also important to have a vapor barrier in place, to prevent warm, moist air from rising into the chilled attic from the living space below. The moisture will condense on the wood and insulation, reducing the insulation R-value and encouraging the growth of mold and mildew.
Most forms of attic insulation benefit from the addition of a vapor barrier to the instructions carefully so you know which side is the vapor barrier and how to
2 Dec 2016 In older homes, the vapour barrier might have been provided by wax paper, kraft Before air sealing and insulating an attic, ensure you or your
Learn what you need to know in order to properly insulate your attic from the If You’re Insulating from Scratch, Put The Right Vapor Barrier in The Right Place.
If the air distribution is in the attic space, then consider insulating the rafters to In addition to insulation, consider moisture and air leakage control in each area of consider installing a radiant barrier in your attic to reduce summer heat gain.
Insulation Buying Guide. Learn what Insulation provides a barrier between vapor and structure. Attics and some walls where there’s no existing insulation.
Control these costs by sealing and insulating If your home has a flat roof, mansard roof, finished attic, They are available with or without a vapor barrier.

2 Dec 2011 The theory is that part of the moisture vapor in the house is actually blocked by the drywall and paint on the ceiling. Any moisture that does enter the attic will pass through the loose-fill insulation and exit the attic through the roof vents, so it won’t cause any damage.
Should vapor barriers be used with attic insulation? Learn how to properly insulate an attic in cold climates.Hi Beth, Do NOT add a vapor barrier on top of the insulation in your attic, since the paper facing on the existing insulation IS the vapor barrier. The paper facing contains a layer of impermeable asphalt that prevents water vapor from passing through it.

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