How To Seal An Attic Vapor Barrier

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.

How to seal an attic vapor barrier.

No you don t need a vapor barrier. Fill any cracks or holes you find to reduce the amount of heat that can escape through these means. For more information on the. Air sealing an attic.

Use your tape to seal the seams of the vapor barrier. The paper facing contains a layer of impermeable asphalt that prevents water vapor from passing through it. During the energy crisis of the 1970s a prevailing belief took root where it was thought that tightly sealing walls and ceilings with a vapor barrier was essential to blocking heat transference and reducing energy costs it was soon determined however that unless the seal was absolute moisture that did get into sealed walls could create serious structural problems and health issues such as. Using other kinds of tape will compromise the waterproof seal and render the barrier useless.

To install an efficient vapor barrier you need the dimensions of the room. Measure the entire area and write down the results. What you need is an air barrier that is at every step of the way you have to pay attention to airtightness. Tru seal attic hatch is an attic hatch that achieves a 100 vapor barrier seal and air barrier seal.

Here is an extra quick tutorial on installing tru seal attic hatch. The basics of air sealing are covered in this article. When it comes to the stairway leading into your attic you should heed the advice in this article.