"The man with one watch knows what time it is; the man with two is never sure."   --Segal's Law

We recently purchased two indoor air quality meters in the $200-$300 range and find that they never agree, not even close. I would like to find out what other people's experiences have been, and if they have tested affordable models that... Read more

Sustainability leadership has requested that you take this quiz to help assess sustainability literacy across the firm. Your own results will be presented to you at the end of the quiz but will not be shared with anyone else. Only aggregated, anonymized results will be available to others.

Please don’t do research to inform your answers... Read more

Hey everyone, 

With the coming In-Use Off-Road Diesel-Fueled Fleets Regulation | California Air Resources Board we have been doing some research on availability of R-99 fuel prior to the January 1 start date. One thing we aren't finding in the research is an estimate of cost impacts. Has anyone started rolling out R-99 on their sites yet... Read more

Looking for the Top 10 on the 10th! webinar?  Click here.

IRA NUTS & BOLTS WEBINAR PURCHASE AND REGISTRATION IS CLOSED.

The Inflation Reduction Act (IRA) offers us a once-in-a-generation chance to equitably decarbonize the built... Read more

Split systems are multi-component units that use an outdoor condenser along with separate indoor fan coils to move refrigerant—and provide heating and cooling—in buildings without the need for ducts.

BuildingGreen-Approved Systems

BuildingGreen approves mini-splits that are tested to AHRI standards and have minimum SEER and an... Read more

Hello Sustainable Community Design Leaders!

I have an exciting announcement today, fall Peer Network events are now open for registration! You can see all the event details and register here!

Based on feedback we received from past events and the most recent surveys, we decided against doing one long week of events for this fall... Read more

Hello All,

I'm supporting a project that is pursuing Green Globes and trying to get familiar with its content.  I'm hoping someone might have experience with the program and be able to provide direction toward products that have an OESR.  From what I've read, this is a material ingredient disclosure type report, based on ASTM std. E3182-... Read more

Welcome to the quiz portion of Green Design: What's Love Got to Do with It?

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


1. Summarize how designers are better able to fulfill the full promise of sustainability by embracing sensory experience.
2. Broaden the sustainable design... Read more

Dear Colleagues,

The EPA has released a very impressive proposal for ENERGY STAR specs for residential water heaters that will strongly encourage electrification and decarbonization of these appliances. 

ENERGY STAR is a voluntary program for high performance appliances and this is a huge opportunity to begin the decarb transition... Read more

Dear SLD-ers,

We have a project team considering the use of copper cladding for a high profile project in Vancouver. The preference is to use pure copper that is pre-patinated and does not have additional coatings.

We are attending a CEU from the Copper Development Association to understand options and environmental impact, but we... Read more

Hi all,

We are taking a deep look at green accreditations within our firm. Gone are the days when we could say: "our staff is XX% LEED APs!" as a metric of firm progress. Here are a few questions we are asking ourselves, and I'm wondering how you approach this in your firms:

Welcome to the quiz portion of Cost-Effective Green Retrofits: Opportunities for Savings in Existing Buildings.

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


1. Define the term retrocommissioning and list at least three examples of how it might help commercial building owners.... Read more

This article just came up in my news feed. I thought you’d all like to read it. I will point out that C&D-specific MRFs have told me that they are really good at single-stream C & D waste, as long as the drywall is pulled out.  Any drywall in a single-stream C & D dumpster ends up in the landfill. Drywall just breaks apart and gets... Read more

Hi folks,

No details have been sorted out yet, but I wanted everyone to have a heads-up that the SCL Steering Group is proposing that we graduate to a full, stand-alone SCL Summit in 2020. (Until now we’ve been squeezing our Summit into the day before Greenbuild, which is good in some ways, but problematic in others—and limits our time... Read more

As if you weren't worrying enough already, here's a little something that I ran across through monitoring activity on the American Society of Healthcare Engineers discussion boards:  https://www.id-hub.com/2018/10/17/hospital-plumbing-reservoir-resistance-interview-amy-mathers/, "Hospital Plumbing as a Reservoir for Resistance".  This is both a... Read more

We have an MEP engineer that is calculating peak loads at about 6 times passive house levels on a large commercial building that is at or near passive house levels of insulation and air infiltration. We suspect one reason is that he is figuring a 50% efficiency level for the ERV. We are showing him ERV systems with 80-90% efficiency, but they... Read more

Hey SDL,

I'm curious if anybody out there has developed specification language requiring a certain level of airtightness (as assessed via one or a series of blower door tests) for a commercial project when it is not going for a Passive House certification and a blower door test is not required by code--basically, something in the... Read more