I am wondering if building experts have an opinion in the correct ordering of vapor and air barrier for a small 1 story house in Berkeley CA. We are planning a DER/Passive house retrofit and are figuring out where to locate the vapor and air barrier. One proposal is vapor barrier (let's say a good quality membrane) on the outside, keeps the moisture out and allows the house to dry out to the outside. In this setup, there is a continuous air barrier (lets say OSB with sufficient taping) on the inside, which helps to make the house quite airtight. In the middle would be loads of insulation. What are the issues with this setup? How can it be improved? Does this ordering make sense for Berkeley's climate. 

Thank you.

Views: 102

Reply to This

Replies to This Discussion

Just asking questions and seeing what sticks is a poor way to obtain information. You should begin by reading the book linked below. It is used by many BPI and HERS trainers nationwide. It is a good overall introduction to many fundamental ideas. I would think it beneficial to your quest for information and there are many breadcrumb trails to follow as you read this book

Residential Energy By Dorsi Krigger http://www.srmi.biz/team-saturn/principals/john-krigger

The linked website below is filled with information. A great resource.

Building Science http://www.buildingscience.com/index_html

In your local area there are seminars you can attend. sign up for some building science classes

http://www.pge.com/pec/classes/

While you are in love with the Passive House Concept it is not the only system that exists. Look at these other systems below and understand what they have in common and what makes them different.

EEBA http://www.eeba.org/

Energy Star http://www.energystar.gov/?c=new_homes.hm_index

LEED http://www.usgbc.org/leed

The above is really only a start as most of us continue to follow breadcrumbs. We review what we think we already know, learn new concepts and try to improve our process.

And to answer your question I would say no but will not elaborate.

RSS

Videos

  • Add Videos
  • View All

Latest Activity

Home Energy Magazine's blog post was featured
2 hours ago
Profile IconEfficiency First California and Kevin Daly joined Home Energy Pros
13 hours ago
Kevin Daly joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
18 hours ago
Bryan Gabriel replied to Larry Nissman's discussion Strange IR Image
"Is this a close up or broad view?"
18 hours ago
Home Energy Magazine posted a blog post
22 hours ago
Ashique Ibrahim posted a status
"Hello everyone.Please suggest a software to carry out analysis of energy auditing."
yesterday
Ashique Ibrahim posted a status
"Hello guys. I am student im doing my project on emergy auditing and benchmarrking. Please suggest the best software to do the analysis."
yesterday
Adin Maynard replied to Adin Maynard's discussion 2x DG-700 manometers for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Yes, one is still available ."
yesterday

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service