Composite windows come in two basic types: fiberglass, and wood/plastic composite.

BuildingGreen-Approved Windows

Fiberglass and other composite window lines have NFRC unit U-factors of 0.20 or lower. Higher U-factors are allowed for products that include significant recycled content.

Manufacturers also must demonstrate... Read more

Hi folks, I was asking around during Greenbuild and getting a variety of answers on this, and since our Contractor Commitments make a distinction between "GC's" mobile equipment as scope 1 and "Sub's" mobile equipment as scope 3. I know that many of us acting as "CM" claim full "operational control" of a jobsite and consider all fuel using on... Read more

Greetings all, and welcome to all those who already introduced themselves!  My name is Steven Burke and I am a Sustainability Manager at Consigli Construction in Massachusetts.  We are East Coast only, but we have a few offices from DC up to Maine.  I’ve been helping Jenn and Nadav get this group up and running, and I’m relatively new to the... Read more

In this live webinar on the sustainability of wood construction, we tap the expertise of leaders in the field and look into three main issues:

Should the Best Practice names always be accompanied by their number? See the attached screenshots, all taken from the main forum page:

Dear SD Leader Community: I'm excited to announce the 2021 Steedman Research Fellowship that provides $75K for international travel for recent architectural grads (within 8 years.) I have the honor of serving as this year's jury chair with a fantastic jur. The topic is "Disruption" (seems most appropriate.)

More details here: https://... Read more

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Hi folks,

Here's a neat resource that just showed up. Pages 5-7 list exactly what kinds of activities could be covered by new federal funds, and what part of the legislation relates to each activity...

From USGBC:

With the passage of the American Rescue Plan Act, the Federal government has now approved $176 billion for K-12... Read more

Hello Green Gurus,

Back at the retreat in March 2021 (does anyone remember back that far?), we formed an Air Quality Working Group with members from SDL, SMEPL, and SCL. Drawing on our collective experience, standards, research, and other resources, we began navigating the murkiness of indoor air quality considerations. We came up with a... Read more

Hi Sages,

Thanks to those who filled out the survey and helped set our agenda for Monday's meeting. We know that this time doesn't work for everyone (no time could, of course), so we'll be alternating times each month. The April meeting will be Thursday, 4/11 at 3:00 eastern.

The agenda is here. It also has the Zoom link (in case... Read more

Is this EDI, or JEDI? (Justice, Equity...)

Notes (attached) and Guiding Questions:

Equity, Diversity, And Inclusion In Our Firms

What are the barriers and what’s working to cut through them?

The process is so super slow... how to to celebrate our small achievements?

How are we fostering inclusion and... Read more

Auto-quiz used for CEUs for attendees of the 2023 SDL Winter Summit.

Welcome to the quiz portion of Video: Making the Green Insulation Choice for Your Project.

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


1. Discuss how insulation works.
2. Explain why certain materials make more sense than others in particular applications.
3. Summarize... Read more

If I'm remembering correctly, someone at the summer summit mentioned working on / or being familiar with the Berkeley CA gas ban. A town here in MA is also considering a ban and wanted to get some feedback from Berkeley.

Are you ready to share the story about your best projects?

AIA COTE Top Ten Awards is a great way to get recognition for your best work and the call for submissions for the 2024 cycle is now open!

The awards cycle has shifted, and the deadline for the 2024 awards is October 26.

So NOW is the time to pull together... Read more

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

Wall assemblies are made up of a number of different materials and systems, and installing each of them requires considerable time and labor and can introduce errors that compromise the building’s weather... Read more