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! I’m working on two reports about equity, diversity, and inclusion (EDI) in the building industry, and I’m looking for contributions from you or others in your firm. See below for what I’m looking for, and please reply directly to me at paula@buildinggreen.com.

NOTE: Ideally, I’m hoping people will want to provide names and firm names... Read more

Hi: I'm writing to share a unique opportunity to make a difference at SCALE as a Sustainability Manager at Amazon Global Services.

This comes from Lisa Matthiessen, FAIA, LEED Fellow who some of you may know. Lisa just joined Amazon's Worldwide Sustainability Team who is charged with making real their Net Zero for all operations by 2040... Read more

ASHRAE posted this year's list of honors and right there at the top of the list is our SMEPL colleague, Cindy Cogil - now able to add FASHRAE to her signature block!  Well done, Cindy and congratulations to ASHRAE for recognizing your accomplishments.

Welcome to the quiz portion of Better Choices in Low-Slope Roofing.

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


1. Explain life-cycle impacts, health and environmental hazards, and durability of low-slope roofing options.
2. Classify situations for which reflective roofing... Read more

Hi everyone,

Happy new year!

The FIRST First Friday Fika* of 2024 is happening this Friday, January 5th from 11am to 12pm ET, hosted by Candace Pearson.

Here is the registration link for the Fikas, or if you've registered previously, you can use the same link for this week.

We look forward to seeing you Friday!

Hi all,

Passing on a message from Julia Siple at AIA who is conducting a series of focus groups related to the AIA 2030 Commitment's DDx platform. You may have already received this from other channels but I thought I'd post here as well in case it got missed. They are looking for more participants in the morning and lunchtime (lunch... Read more

I'm going way outside of my skillset and comfort zone...venturing into HR territory to do an analysis of my company's benefits package to see if it meets exceeds or falls short of the requirements of Fitwel and WELL. Has anyone else done this within their organization? How was this received by your company's executive team?

When... Read more

Is anyone else working on a project doing Living Building Challenge v4.0 Energy Petal? We're working through the Imperative 08 Net Positive Carbon Resiliency Strategy requirements that ask for the project to be habitable for a week in the event of an emergency. We're curious how others are defining "habitable" and what systems assumptions... Read more

If you don’t spend your “day-to-day” in the healthy materials space, it’s hard to create strategy and align your company to meet your customers' (what seems to be) ever-changing asks and project goals. This... Read more

Is there a list of which number corresponds with each Best Practice? E.g. "03 Energy Audit & Planning."

Hi all!

I'm working on my first energy positive / passive house multifamily building and trying to figure out the trash/recycling chute. I am curious what solutions you have employed to make the trash chute air tight? We have excluded the whole chute from the envelope. Do you use airtight doors (and which ones?) at each floor trash/... Read more

We have a client for whom we are designing a very high performance manufacturing facility, and they want to communicate their building's performance both dynamically and in real-time within their lobby for guests and staff.

We would like to mine the wisdom of this group to see what recommendations we can muster regarding high quality... Read more

Hi folks! I had a blast at the Show + Tell Tuesday night of Greenbuild. Thanks to Payette for hosting, and to Arrowstreet for joining Payette and BuildingGreen as sponsors. What a great way to get a "tasting-menu" Greenbuild experience!

I also caught a couple of great sessions on Friday morning. Polling others, it seems that the... Read more

Welcome to the quiz portion of Introducing Fitwel v2.1!

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


1.  Explain the purpose of the Fitwel standard, including how it advances the goals of health and well-being of building occupants—as well as public health.

2. List nine ways in... Read more

Hello Gurus,

I am working with an owner who is making zero-carbon commitments and wants to explore setting carbon budgets in their capital plan (and subsequently their individual projects). We will be starting exploratory discussions next week and I was hoping some of you might have been working with other owners who have already... Read more

Huge shout out to Patty Lloyd, Luke Leung, Janet Olsen, and Sarah Gudeman for their webinar on the Power of Peer Networks. They share lots of insights into the value of participating in BG Peer Networks and many others. Ten bucks to Illinois Green gets you access to the recording--I loved it. What would you have said that they didn't?