Currently not for sale, being updated and re-released in November 2021.

New Guide to Thermal Insulation Report

The BuildingGreen Guide to Insulation provides detailed guidance on insulation products and practices, including cost comparisons and detailed recommendations on what insulation to use, and what to avoid. It's a treasure... Read more

A brief non-technical rant about OneClick LCA - from someone who is not actually USING the tool, but lobbying for its access.  Wondering if you all have better intel, or if it is just me.

We are working on a number of projects for which te teams are using OneClick LCA - for some cases it has a better international data set than others. ... 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

Are you a design or building professional who wants to learn more about sustainability—such as how to do energy modeling, improve the building envelope, or use renewables on a project? Now more than ever, it's time to join the sustainable... Read more

Hi SDLers! I hope early fall is finding you well.

There is a current opportunity to make a difference in the campaign to reduce use of toxic flame retardants.

Arlene Blum and the Green Science Policy Institute, whom many of you know, are currently organizing a campaign of support for the CA State Fire Marshal's proposal to allow... Read more

I received this email from Cathy Higgins at NBI, and thought some of you may know the right folks who might be interested:
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Hi colleagues,

You are exactly the folks that might know a high-caliber person to join NBI’s team. We are looking for someone ideally based in California but could be elsewhere with... Read more

Hi there colleagues!

Out of curiosity, do you plan on attending Greenbuild in person in San Diego in September? My staff asked me if we were going and my answer is partially contingent on the extent to which attending would mean getting to see some of our favorite people (read: all of you). Looking forward to taking the temperature of... Read more

Hello all!

I'm new to the group, and so excited to be here. Two part question here (as we think about processes and new year goals).

I am at a smallish firm (20 people) in Boston helping to reform our processes to enable even those that are not steeped in sustainability at a daily level to be comfortable looking for opporutunities... Read more

I'm sure if I hop in the way back machine I could look in the forums and find old threads on LEED GA and LEED AP study resources, but I also know that material comes in and out of date. Has anyone found a good, current solution for firmwide LEED study materials?

We used to have some GBES resources, but those are intended to be person-... Read more

Caseworks can be made from unsustainable wood and other materials, and with adhesives and finishes that offgas formaldehyde and other hazardous compounds.

BuildingGreen-Approved Casework

Approved caseworks are:

Welcome to the quiz portion of Five Reasons to Be Optimistic About Solar Energy!

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


Describe three ways how PV decreases environmental impact while increasing sustainability and health measures for communities.

Discuss PV life-cycle... Read more

Hi all,

BG WebDev needs to clarify the Forum comment moderation rules you would like us to put in place.  We do not require moderation for premium users in our LEEDuser forum unless they include a link in their submitted topic or comment. In this case, we hold the publication of the comment in moderation until we can make sure the link... Read more

If anyone else has gotten confused going between parts-per-million and percentages (parts per hundred!) for material reporting here's a little infographic that might help. Feel free to use or improve! 

Here's the Core Purpose for this group that came out of the Inaugural Summit.

We're off and running!

Hello SDL!

Has anyone set "Ecosystem Benefits/Service" targets for an individual project or for all their projects? I was previously against the idea of even measuring ecosystem benefits but I've had my mind changed in recent months!

Currently we want to set a target for every project to: "Improve ecosystem benefits on every site... Read more