Hello, what acceptable levels of air quality are you using to evaluate natural ventilation strategies for your projects?  In our Living Building we only open windows when PM10, PM2.5, etc. are within LBC and WELL limits.  In a seasonally smoggy urban environment, this limits how often we can utilize natural ventilation even if the outside... Read more

Lisa Richmond

Has anyone here found an alternative to XPS for the void former?

A structural engineering contact was included in recent conversations about embodied carbon in insulation materials and brought to our attention that this is a common use for XPS that has nothing to do with its insulating properties. It is typically used where concrete is... Read more

I just saw this post from Conor on LinkedIn.

Starting in January 2019, all new Columbia Construction Company projects require LED temp lighting.

Are others doing this too? Frankly, given all the benefits and how quickly the industry is matured, it's hard for me to understand why anyone would use anything other than LEDs on a job.... Read more

Has anyone had any success with achieving the LEED Building Envelope commissioning points with an alternative compliance path using the requirements of the PHIUS verifier? It seems like an unnecessary duplication to ask the client to pay for a BECx agent and a Passive House verifier. Or am I missing something? I can't find any LEED... Read more

Welcome to the quiz portion of Stone, The Original Green Building Material.

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


1. Explain how stone is natural and durable, emits no VOCs, requires almost no maintenance, and provides a connection to the earth and our history.
2.... Read more

I suspect that some of you have already seen this or already signed it, but just in case, for your consideration:

Add your voice to the powerful chorus for climate policy and sign the LEAD statement.

More than 500 sustainability professionals have now signed, and the number is growing! 

To learn more about this: please read... Read more

Water treatment systems often rely on harsh chemicals to treat bacteria, and on high water use from drawdown of water to reduce build-up of concentrates—a process called blowdown.

BuildingGreen-Approved Water Treatment

BuildingGreen approves systems that:

Hi everyone, 

We’re so excited to announce that registration for the 2025 SCL Summit is now live! Register here and save your seat to join BuildingGreen, your SCL peers, and members of all three other networks for a first-of-its-kind summit this year.

In addition to the SCL Summit, you’ll have the option of joining us for the all-... Read more

Does anyone know of a good summary of state and local energy code adoption for new building and ordinances for existing buildings? I know of this energycodes.gov site, but it feels somewhat misleading when you dig into it. For example, in CO, it suggests there is no min code, but there is, and it doesn’t show the extent to which local govs are... Read more

Hi, curious if anyone in the group has considered using Fitwel in an existing (built) school project (K-12). 

Would be interested in hearing your experiences and if this tool is a good fit for this type of project.

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!

Hello Green Gurus!

We have some exciting details for the next All Peer Networks webinar on Design Agency & Civic Engagement: Building Sustainable Communities.

REGISTER HERE - Hope to see you there!

Design Agency & Civic Engagement: Building Sustainable Communities
June 25th, 2020
3pm - 4pm ET (Noon - 1pm... Read more

I'm sure many of you remember when Greenbuild 2020 was scheduled for the week of the presidential election and if was shifted back one day. 

If anyone has small kids and have gone to book your Greenbuild 2022 travel, you've potentially noticed (as I have) that I'll have to travel on 10/31 and will miss all Halloween activities with my... Read more

Hello SDL-ers - 

The SDL Climate-Smart Wood Group hosts a monthly online forum for builders all over North America who care about wood - and if that sounds like you, you're invited! As builders, we want to advocate for the conscientious use of wood as part of a holistic commitment to climate justice and resilience. We have been meeting... Read more

Hello everyone!

I'll be using this thread to post call reminders and notes.

To start us off, the next call is this coming Tuesday, March 24th at 1pm Eastern.

The topics we will be discussing include:

Around the “room” quick check-in. How’s everyone doing? What’s top of mind for you? Able to keep projects and... Read more