Exterior doors often have poor insulation and seals that allow air through.

BuildingGreen-Approved Exterior Doors

BuildingGreen has different criteria for commercial and residential exterior doors.

Commercial swing (hinged) doors must be NFRC-rated, certified, and labeled for U-factor. They have a maximum air leakage of 0.... 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

Hi Everyone, 

Our Vancouver team is looking for some innovative, high performance  building retrofit case studies. We are have been retained to retrofit a significant heritage building in Vancouver and the client has a net zero carbon institutional goal. As such we are looking for some innovative precedents that will provide design and... Read more

We are having trouble sourcing a LEED compliant wallcovering adhesive. We specified Roman Pro-880 which is low VOC but doesn't have sufficient back up for TVOCs. Have you had success with other products?

Hello friends,

We are embarking on calculations to quantify avoided embodied carbon from converting an old school building into a multifamily project and I wanted to vet our methodology with you.

Our idea is to first establish a benchmark for a new replacement multifamily building based on published studies. We have found a few... Read more

I'm sure most (if not everyone) is aware that LEEDv5 is under public review until May 20, 2024. I know I need to make time to flip through it, review, and comment, but I'm having a heckuva time protecting the time in my calendar to do that. Anyone interested in joining me for a 60 - 90 minute meeting to do this together as an accountability... Read more

As the managing editor at BuildingGreen, Elizabeth oversees the day-to-day operations of the editorial department and writes and edits content for publications. As sustainability consultant, she leads components of consulting work related to sustainable strategy, organizational change, socially responsible practices, and stakeholder engagement... Read more

Hi All: I'm writing to see if I can get some recommendations/links to some great, free web tours of sustainable projects for use in an intro to sustainability class I'm teaching online this fall. Typically we tour some local buildings but that isn't an option this year. I'm hoping to find a few different ones for students to choose from. They... Read more

Huge congratulations to everyone involved with a Top Ten winner this year! 

In a rare feat--Leddy Maytum Stacy got two!

Also P+W, Lake|Flato with Cooper Cary, WRNS, SOM, Olsen Kundig, KieranTimberlake, DLR--nice work! (And who is Studio27?)

Here's James Wilson's take on what's special about each winning project.

... Read more

Hello Green Gurus,

Now is a pivotal moment. Net Zero Stretch Code legislation has been proposed in the Massachusetts House and Senate, and draft code language is currently being developed by the Board of Building Regulations and Standards (BBRS). The Net Zero Stretch Code is currently the greatest single opportunity to support reduced... Read more

Welcome to the quiz portion of What Makes a Product Green?.

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


1. List and describe at least three attributes that address each of the following categories: "efficient use of materials"; "responsible sourcing"; "energy and water... Read more

Hi folks,

I hope you've seen the plug to sign onto the letter that's generated a flurry of messages on Green Gurus--I also emailed it out directly to everyone. We've got lots of architects on board, and a handful of engineers, but I think we just have one contractor so far (Thanks Theresa!)--it would be really awesome to have more.

We have another great class of COTE Top Ten winners—congratulations to all of you with recognized projects. Join us on May 10 at 2:00 pm Eastern time for an inside peak at many of this year’s winners, along with insights from jurors. CLICK HERE TO REGISTER.

To keep things open and honest we won’t be recording this session. This “safe... Read more

Hi everyone!

My awesome colleague, Paula Melton, is doing a short talk for USGC about mass timber and wants to know if there are SCLers in the group that can share their experience. In particular: 

"I’m wondering particularly about how supply-chain and cost issues are affecting availability and decision-making, and what the onsite... Read more

I am diving back into Sefaira for the first time in a while, and the program still seems to be missing the ability to account for automatic daylight dimming in energy savings. Previously I had used an LPD reduction equivalent to emulate the savings automatic dimming would provide. Has anyone done a similar work-around?