High-performance buildings integrate site-responsive orientation, climate-responsive form, hefty R-values, efficient mechanical systems, healthy... Read more

"The man with one watch knows what time it is; the man with two is never sure."   --Segal's Law

We recently purchased two indoor air quality meters in the $200-$300 range and find that they never agree, not even close. I would like to find out what other people's experiences have been, and if they have tested affordable models that... Read more

Hi Everyone- as a follow up to the 5 minute presentation I did during the recent Virtual Summit-Palooza, I am pleased to announce that the Sustainability Action Plan Guidance Document created by the AIA 2030 Working Group is finished and released.  Please share!

http://content.aia.org/sites/default/files/2021-03/... Read more

Thanks to SERA especially David, Kira and Clark for an inspirational conversation with Paul Hawken about his latest book. I know I needed a positive perspective! Then I found this great "Regeneration Anthem" song and had to share.

https://regeneration.org/news/210915-we-can-change-world-regeneration-an...

Happy Fall to all.

I have to admit that I wasn't particularly paying attention to LEED during Greenbuild, but anyone recall the "big announcement by USGBC" that LEED v4.1 is coming?

Article can be found @ Green Building Law Update by Stuart Kaplow and the title is "LEED v4.1 Announced by USGBC at Greenbuild."

https://www.greenbuildinglawupdate.com/... Read more

Hi Everyone!

I'm Emily, GCI General Contractor's Sustainability Manager in San Francisco. Nice to meet you all.

I started with the company in 2013 and since then we've doubled in employees. I have been handling sustainability solo, until about 8 months ago, when we hired Alejandra Arce Gomez full-time to help manage the... Read more

In a recent e-mail to BuildingGreen subscribers, Paula Melton pointed out that USGBC has opened the call for suggestions for LEED v5.

Every day, I encounter dripping skepticism from building owners about LEED for New Construction, because of the many many times that the fanciful outcomes of energy, water, and daylight models bear little ... Read more

Hi All,

Has anyone dug into ASHRAE 2016 as part of the new v4.1 requirements or as codes start to adopt it? I recently presented on this and thought I should check my math to make sure I'm understanding and communicating this correctly.

My understanding is that there is a new reference baseline, that is essentially the ASHRAE 2004... Read more

The BuildingGreen/GreenStep exam prep materials are... Read more

Hi everyone! Our sister company, Flatiron, is a heavy civil/infrastructure contractor based out of Broomfield, CO. Their sustainability team is on the hunt for a Circular Economy Manager. Our companies recently announced exciting public ESG and climate commitments, including several related to waste reduction, life cycle assessments, and more... Read more

Hi, folks! 

I was recently asked if BuildingGreen could connect prospective speakers to an event organizer in Chicago. Beyond the leaders in the BuildingGreen networks relayed, I wanted to share that the exercise led me to the Women and Climate speaker database: https://www.womenandclimate.co/speaker-database 

When filtering by... Read more

We have an MEP engineer that is calculating peak loads at about 6 times passive house levels on a large commercial building that is at or near passive house levels of insulation and air infiltration. We suspect one reason is that he is figuring a 50% efficiency level for the ERV. We are showing him ERV systems with 80-90% efficiency, but they... Read more

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 folks, 

AIA COTE National is looking for Techincal Reviewers for the 2025 awards. Interested, or know someone who might be?  Sign up here: https://form.jotform.com/231175886103153

Thanks!

Welcome to the quiz portion of Rebuilding for Resilience in the Face of Natural Disasters!

IMPORTANT: This quiz covers three related articles within this topic. 

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


We think fresh water supplies are endless, but this idealistic vision is clouded by the smoke of countless forest fires in the U.S. West and elsewhere. Instead of endless bounty, climate change is bringing us catastrophic droughts and flooding that now dominate the headlines and threaten entire regions.

This report covers innovative... Read more

hi all! I'm almost at the finish line with this year's 2030 reporting...whew. I'm running into an issue that I wanted to throw out to this group, regarding the zero tool and national average baselines. Hoping some of y'all who manage your firm's 2030 data, or are just more familiar with CBECS and related data, have some insight / experience to... Read more