With the current push for improved window performance to meet energy codes and Passive House, room side low-e coatings can significantly improve window U-values. However, back in 2018 Payette did this excellent study that showed that while room side low-e coatings improved window U-value and increased the interior radiant temperature, the... Read more

Chillers are part of larger systems that provide cooling in large commercial buildings.

BuildingGreen-Approved Water Chillers

Because there isn't a single relevant efficiency standard for chillers, approved products use innovations such as magnetic bearings, variable frequency drives, or other technologies that significantly... Read more

Hi all,

My office is looking at some certification options for our upcoming renovation. One thing the management team asked me that I don't have a solid answer for is, do WELL certified spaces typically go through with recertification and everything it entails, or are they doing the upfront work to get certified and then letting it lapse... Read more

Does anyone have experience pursing SITES certification on an essentially a zero-lot line project?

We are required to achieve silver certification, but the project scope/phasing recently changed and the entire site/parking area was eliminated and we no longer have a green roof. It still appears we can meet silver certification as so few... Read more

Does anyone subscribe to Green Badger? Do you find it valuable?

Hi SDL: Please see attached letter to USGBC about the urgent need to address climate change in the next iteration of LEED v4. It's based on the realization that in the last few years it has become clear that climate change has become the dominant global threat to humans and our fellow species. And it has also become clear that the steep... Read more

Curious on stories when IAQ testing for LEED or WELL didn't come back with "all clear, everything's good" results we all hope for. 

I have a project right now where we are tracking down suspicious sources and look forward to telling the full story when it's done being written. 

Thought maybe this would be a good safe space to talk... Read more

Welcome to the quiz portion of Integrated Design Meets the Real World.

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


1. Define the integrated design process and describe what makes it different from the conventional design process.
2. Describe the charrette process and list... Read more

Hello Everyone,

We wanted to share the highlights and take-aways from the large firm Sustainable Design Leaders (SDL) 2020 Winter Summit at The Lodge at Gulf State Park, AL. Additionally, this was the first year we had a pre-summit workshop for the winter summit. Our amazing workshop facilitator, Julie Huffaker from Deeper Funner Change... Read more

Hi All - 

Has anyone explored hydronic system analysis software (1D CFD)? 

Some options are PipeFlo, AFT Fathom, PipeFlow (eerily similar name to first option), COMSOL Pipe Flow Module. 

Applications could range from general system troubleshooting, pump sizing, to district hydronic system network analysis. 

Best,... Read more

I've been researching the job description for "Director of Sustainability" and Sustainability Director" as I'm at a point where Sustainability Specialist no longer seems to fit.  If you have either of these titles and are willing to share your job description with me, I'd appreciate it. I need to write my own job decription and I can write what... Read more

Typically made from petrochemicals, carpet and its adhesives can offgas. It is also a challenge to recycle them, increasing the chances that it will be incinerated or disposed of in a landfill. Because carpet has a limited lifespan, its life-cycle performance is key.

BuildingGreen recommends modular carpet that demonstrates lower life-... Read more

Welcome to the quiz portion of The PVC Debate: A Fresh Look

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


1. Catalog the history of PVC in the building industry.
2. Recount the connections between PVC and chlorine, dioxins, mercury, and vinyl chloride.
3. Explain the... Read more

Hello Green Gurus!

Here are the details for an upcoming Peer Networks webinar, Strategies for Streamlining Sustainable Materials.
Save the date! The registration link will be posted shortly.

Strategies for Streamlining Sustainable Materials
September 24th, 2020
2pm - 3pm ET (11am - Noon PT)

This session... Read more

Hi all, 

I'm looking for critical mass here. Do any of you have or know of clients who are requiring Just labeling for their consultants? I've heard that Google is asking this, and wondering who else might be on that course. Thanks! 

Dear Colleagues,

I proposed CarbonCure for a project and the structural engineer in the meeting was opposed to it. He later sent me detailed reasoning by email. I have not used this technology and would like to hear other more experienced opinions on the technology. The project we are working on is well integrated with climate, 99% sDA,... Read more