CEUs are available for reading all the building-envelope product guides and primer. Click here to learn more and take the quiz.

Vapor retarders are meant to protect our building assemblies from getting wet, but they can also slow drying, contributing to mold and structural degradation.

BuildingGreen-Approved Vapor Retarders

Hi all,

We have an institutional client who has tired of LEED and is instead putting forth EarthCraft Light Commerical as a replacement certification (they like the performance verification & lower cost that ECLC provides).  Has anyone used ECLC? It seemed an odd choice but wanted to hear from others on their experiences. The... Read more

Hi all

I would like to warmly invite all of you to our Lyle Center for Regenerative Studies 25th anniversary events. I think the events are very pertinent to what this group is about and are all free. If you are in the LA area please come! The 11th includes an outdoor reception at the center after the presentations. It’s also an... Read more

I was recently asked if there is a way to quantify financially what one MT eCO2 might be worth in the context of a building owner reducing their own carbon emissions.  How do you put a dollar value on those reductions?  Does anyone have experience with that or can you point me to the correct resource to answer this question?

I'm working on the Best Practice pages, and I want to verify the role of "BITuser experts" (analogous to LEEDuser experts, as shown on this credit page). My questions:

Note that the role of the expert,... Read more

This is a test for surveys.

Hi All,

I'm teaching a class this semester at CU Boulder on Zero Carbon Buildings and Cities (a new class that I'm making up as I go). The hardest part, I'm finding, is locating some good materials that cover the basics of energy efficiency for non-building engineers or designers (we are energy and sustainability generalists in this... Read more

Greetings to the Green Commons!

Those of you who attended Greenbuild may remember that during one of the keynotes, Ali Zaidi - White House National Climate Advisor, announced that the White House was developing a definition for "Zero Emissions Buildings" (here’s a [LINK] to a related Washington Post article). The draft language for the... Read more

Electrochromic glazing holds the promise of less glare and better energy efficiency with fewer moving parts. The reality is much more complicated and includes information you won’t... Read more

Welcome to the quiz portion of The Building Envelope: Primers from Environmental Building News.

Learning Objectives
Upon completing this course, participants will be able to:


1. Explain how thermal mass helps maintain indoor thermal comfort in buildings.
2. Describe the differences between closed-cell and... Read more

Hi Green Gurus!

We’ve gotten GREAT feedback and input from many of you via the survey about our planned fall events. You expressed a lot of interest in all the events we proposed: a series of in-depth Integrative Design Jams, separate Summits for SDL and SCL, and regional all-network workshops, starting with one in Boston—so we’re moving... Read more

Hello All-

  We have a K-12 school project that is using a R-60 flat roof assembly as an energy & costing benchmark (along with other energy efficiency measures but this is the relevant detail to our question).  The project mechanical engineer is not onboard with a number of our energy conservation measures and has been sharing... Read more

Hi all! I'm very excited to report that we have interest from a developer client in tracking embodied carbon through construction. We have issued construction documents and the construction managment team is begining the process to establish the GMP.

We're looking to use EC3, and/ or ZGF's LCA analysis tool for concrete to look at how we... Read more

Hi All,

We’re planning a conference here in Boston, October 23rd & 24th, focused on Designing for People.  We’re rounding out our speaker lineup and I thought I’d reach out to you all for ideas.  If you had an all-star list of people speaking on Health and Wellness in the Built Environment who would be on that list?  Send me 3 names... Read more

If yes, take a look at Tour:  TM10: Transit Oriented Development: Chicago Style

https://explore.greenbuildexpo.com/Attendee/Schedule/SessionDetails/256599

It is not full yet, so there is still time to sign up.  Susan King, Sustainability Leader for HED will be showing one of her projects as part of the tour: Lake Street Studios. ... Read more

I'm pleased to announce that the AIA Board of Directors has unanimously adopted the A&D Materials Pledge as the AIA Materials Pledge!!!!! The support of so many of you was a key factor in making it so easy for the AIA Board to adopt The Pledge. The Materials Pledge now has 90 signatory firms, including many of yours. Thank you all.  Now,... Read more

I'm passing on an alarming (and truly Orwellian!) message from the AIA that some may have received:

The AIA is aware (and has been actively addressing) that there is a draft executive order circulating for consideration by White House officials that would officially designate “classical” architecture as the preferred style for the... Read more