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

For those that missed Z's subtle mention of this a few weeks ago, Bora finally decided sustainability is important enough to have someone dedicated full-time to it, and then went out and got one of the best:

https://bora.co/bora-hires-sustainability-director-corey-squire/?tax=all-posts

I've been sharing Corey's thoughts on... Read more

I am excited to share with you the final draft of the letter back to LP50 manufacturers.  The LP50 manufacturers sent their “Closing the Loop on Product Transparency” to design firms earlier this year.  For more background information, please check out Chris Hellstern's original August 20th post on this Green Gurus forum.  When we posted the... Read more

Greetings AEC Sustainability Leaders -

This is an update on where we stand with the BBB letter. In addition to posting this to the AEC SDL (Green Gurus) Forum, we are sending the same message to all current signatories by email to make sure everyone is notified. Apologies for putting two items in your inboxes!

First, please read... Read more

I can hear Kjell saying "All models are wrong, but some are useful." Having said that we are having trouble getting usuable predictive energy use information from our electrical design engineer. They are telling us that their energy models are not for accurate pEUIs but just to compare various scenarios. Are they being lazy? Should we push for... Read more

HI All,

I am curious if others are using THERM in-house for your envelope design?

We usually use our building envelope/curtain wall consultants (Boston - so mostly RWDI and Heintjes) but our teams are finding that they need the information faster than our consultants can provide, they are backlogged, or we have some curtain wall... Read more

Hi All, 

Not sure if this is the right location for this (as I'm a new member) but we're Planning the upcoming Water Conservation Showcase in Northern CA. Some details below

The Water Conservation Showcase brings together water, energy, and green building professionals to amplify and discuss innovative water management solutions... Read more

This summit was pre-approved for  6 GBCI CE hours.

Please complete the survey question to confirm your attendance and receive your CEUs.

By providing your credential numbers in your profile, you will enable us to automatically report these CEUs to the organization. Please first check your profile to be sure your information is... Read more

Masquerade as the person for whom you want to purchase, then click link

BG annual

BG annual-comp

BG annual + free insulation report

BG annual + insulation report

LU annual + free insulation report

BG 79.00

SCDL

SAL

SDLS... Read more

Are you or companies considering joining RE100? http://there100.org/going-100

"Companies joining RE100 make a global, public commitment to 100% renewable electricity.

To achieve this goal, they must match 100% of the electricity used across their global operations with electricity produced from renewable sources – biomass (... Read more

Welcome to the quiz portion of How to Make Integrated Project Delivery Work for Your Project.

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


1. State three problems that Integrated Project Delivery (IPD) promises to solve.
2. Dispel four misconceptions about IPD that have... Read more

Here's a file upload.

Hi - I'm wondering if you have recommendations for a web/mobile app for occupants to self-assess comfort at regular intervals. I've downloaded comfy, but it wants to actually DO something about thermal discomfort by alerting discomfort and connecting, I believe, to the BMS. We just want to collect information at this point. And since I'm a... Read more

Hi Green Gurus,

We have a lot going on this week, and I know it’s hard to keep track of everything, so I’m providing this quick update.

Conveniently, we have also just launched the new Peer Networks Hub on BuildingGreen.com, with a Calendar page where you can see all upcoming events (and a link to recordings of past events). You... Read more

CEUs are available for reading all the building-envelope product guides and primer. Click here to learn more and take the quiz.

Wall assemblies are made up of a number of different materials and systems, and installing each of them requires considerable time and labor and can introduce errors that compromise the building’s weather... Read more

I am looking for a Mechanical Engineering firm in New York state who works in mid-sized commercial (ideally hospitality or multifamily experience) and who has experience with geothermal GSHP systems.