GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Partial encapsulated crawlspace?

Joe Norm | Posted in General Questions on

Hi All,

My vented crawlspace was built 2 years ago in climate 4C. 

From what I read and observe, ventilated crawls are not perfect in this climate, but are not automatic disasters like in other climates.

That said, There are already large cobwebs down there and I can only imagine things will get worse. I would like to begin the encapsulation process with a nice white vapor barrier and eventually cover the vents up.

But the floor insulation looks perfect and is essentially brand new, I am not ready to tear it out.  Is there a hybrid encapsulation approach? Can I add a vapor barrier, cover vents, and skip the concrete stem wall insulation?

I do not have mechanicals down there and there is already a 6 mil black plastic barrier layer on the dirt but not taped. Any suggestions? 

Thanks

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Replies

  1. Jon R | | #1

    Don't cover the vents without a properly encapsulated and conditioned crawlspace. But you could use insulation and/or vapor retarders to improve the performance of a vented crawlspace - less cooling and less ground moisture entering should be beneficial.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |