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drilled small diameter holes in vapor barrier in the ceiling

drilled small diameter holes in vapor barrier in the ceiling


  #1  
Old 01-28-16, 01:42 AM
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drilled small diameter holes in vapor barrier in the ceiling

hello during the course of repairs in our kitchen we accidentally drilled several small holes into the ceiling of the kitchen. There is no second floor so the area above the kitchen is just below the room of our home. When we were in the attic afterwards noticed that we had punctured the vapor barrier in several locations. The size of the holes were roughly equivalent to roughly 1/8" of an inch. Do we need to cover these holes in the attic or is safe to leave the vapor barrier as is ?

thanks
 
  #2  
Old 01-28-16, 03:10 AM
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You can tape over the holes with Tyvek tape if you want. As long as the holes are sealed either from below or above to keep air infiltration down, it's fine.
 
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Old 01-28-16, 04:24 AM
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You say you can see the holes from the attic, they should be buried under lots of insulation. As a vapor barrier those little holes don't mean much. But as an air barrier, depending upon what your ceiling material is, you should tape them. If the ceiling is covered with drywall, that is already a good air barrier.

While you are up there, look for other air leaks, like around plumbing and electrical penetrations and seal them. Then add lots of insulation.

Bud
 
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Old 01-28-16, 07:55 PM
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Hello and thank you both. Yes I can see the holes from the attic. The attic does not have any insulation see picture.
 
  #5  
Old 01-28-16, 08:24 PM
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You can put a piece of house wrap tape on them if you feel the need, but in reality that vapor barrier already has a bunch of small holes where it was stapled up. The performance of a VB is area weighted, so 99.9% covered equals 99.9% performance. Bur, air leakage is a bit more aggressive.

We don't know your climate, unless I missed it, but few climates can go without some insulation. Look for opportunities to air seal while that ceiling is exposed.

Bud
 
 

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