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

Water and air that penetrate building assemblies can damage materials, cause energy loss, and lead to mold, mildew, or other problems. The products used to address these may contain materials that are... Read more

Hello all,

I've been in communication with a few of you already, but for those who don't know me - my name is Jen and I'm a new member of the BuildingGreen team helping out with the Peer Networks. I've already been learning a lot, and I'm looking forward to getting to know the SDL Network and its members better!

Here are the... Read more

I'm hoping someone knows the anser to this question. For the LEED ND certification the minimum requirement is "The LEED project should contain at least two habitable buildings and be no larger than 1500 acres." Does habitable mean buildings with dwelling units?

Has anyone pursued the schools Mold Prevention IEQc10 successfully and have format for the documentation created they would be comfortable sharing? Our contractor is excited about pursuing this credit but no on our team has pursued it before.

thanks in advance!

Erika Heet is the Editor-in-Chief of BuildingGreen. She is the former Editor-in-Chief of Interiors magazine. She has held senior editor positions at Dwell and Architectural Digest, and is the author of two books on modern architecture. She has served on the boards of Greenbuild and the Sustainable Furnishings Council, as well as on juries for... Read more

Hi Shane and Dennis,

What return address should we use for BIT User forum notification emails?  Ben suggests something like no-reply@bit-user.org but whatever you like is fine.

Once you decide, please let us know who controls the domain name (e.g. bit-user.org or bitbuilding.org).  Ben will send them instructions for editing the... Read more

Hi Green Gurus (esp. Sustainable MEP leaders...)

I'm looking for suggestions of contacts for MEP consultants, especially in the Chicagoland region, ideally with sustainability highly integrated into the work, specialization in geothermal systems, and indoor agriculture. (doesn't necessarily have to be all-in-one)

For context, we... Read more

Hi all,

We are about to start a affordable housing passive house project in Boston and in a few presentations I've seen great signs that builders use to try to get the point across to subs as to how important air sealing is. Some are even quite funny! The builder we are working with does not have a sign like this, but is open to ideas.... Read more

Greetings Gurus, following the AIA COTE Design for Economy concept, does anyone have a resource for a list of building efficiency ratio "targets" by space type? I've always struggled with this initiative. 

Hi Green Gurus,

In this stressful time, I think it is important for us to continue to feel connected and supported.  Also, it is difficult to come to terms with the reality of what is happening.  So, I thought it would be helpful for us to share some information about the response of our respective firms to the Coronavirus.

The... Read more

I opened IE11 (Internet Explorer 11) today, and saw a message indicating IE11 will be retired June 15th, 2022. While I have no personal attachment to IE11, it was the only internet browser I could consistantly get to open LEED Online credit templates on the actual website. 

Has anyone found another way to be able to fill out LEED credit... Read more

I was wondering if any design or contractor friend here can kindly share the carbon emission factor of excavation during construction. 

I found a paper that provides energy use rate per cubic meter and associated carbon emission in kgCO2 for different phase of construction such as excavation earth work, pouring and lifting concrete,... Read more

Welcome to the quiz portion of Wood: What’s Good?

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


The EC3 Tool has come up quite a few times in the Green Guru's conversations.  We're hosting an online review with Stacy Smedley and Mark Chen from Skanska.

Wednesday September 29th at 3pm PST

The tickets are free and this will be a Teams meeting.

https://www.eventbrite.com/e/using-the-ec3-tool-the-why-and-how-tickets-...... Read more

Hi Fellow GG: I just wanted to make sure everyone saw the great announcement from the White House yesterday about Code updates to address energy efficiency and resilience. It's great to see these kinds of initiatives that hopefully can continue for a few more years. So let's try to take advantage of them (said by someone who lives in Missouri... Read more