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

Applying housewrap

Charline Bridgeman | Posted in Energy Efficiency and Durability on

I didn’t read all of your questions/answers but after reading quite a few, I didn’t see where there was a mention of a right and wrong side to housewrap. I would think to ensure that a product would perform to it’s highest standard, ensuring there would be proper escape of moisture through the product,this innovation would have a right and wrong side; correct, or does it matter? In other words, apply the housewrap to walls with the print facing out.

Charline

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. GBA Editor
    Martin Holladay | | #1

    Charline,
    Plastic housewrap allows water vapor to pass through it in both directions. It is bi-directional, not uni-directional.

    It's possible, however, that some housewrap manufacturers might include some type of coating to protect the housewrap from UV exposure. Certainly most builders install housewrap with the printing facing the exterior.

  2. GBA Editor
    Martin Holladay | | #2

    Charline,
    At least one document from DuPont Tyvek advises, "The roll material is applied over exterior sheathing material (with the printed side out) so that it forms a continuous envelope around the entire building."

    I don't know why, but DuPont clearly likes the advertising value of their name on all those houses.

    Here is the link: http://www2.dupont.com/Tyvek_Weatherization/en_US/assets/downloads/CommercialWrap%2007%20102.pdf

    Typar's instructions are similar: "Start at the bottom of one end of the wall with the printed side facing out."

    Here's the link to the Typar document: http://typar.com/pdfs/Typar-Weather-System-Installation-Instruction.pdf

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |