polyethylene sheeting w/ Zip Huber
I am building in western Colorado, we have low humidity, located in climate zone 5. I have 2×6 construction with Zip Huber sheathing with 1/2″ foam. My question is, should the interior wall have polyethylene sheeting? It is my understanding that the Zip product has a fluid applied membrane to protect against water and air infiltration. I am concerned that with polyethylene on the interior I will trap water vapor and have mold issues. I have inquired to Zip Huber, they did not respond. Thanks in advance.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb1.png)
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb2.png)
Replies
Make sure that the wall complies with this. Table 2 A or B
https://www.appliedbuildingtech.com/system/files/200311_abtg_rr_1701-01_moisture_control_guidelines_figure_update_final.pdf