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

Welcome to this practice session for the LEED AP v4 exam, and good luck!

All the exam questions and explanations that follow were authored by Alex Spilger, LEED AP BD+C of GreenStep Education, and are provided in this BuildingGreen "exam simulator" through a special partnership with GreenStep and with our friends at the Poplar Network.... Read more

P.J. is an accomplished writer and speaker who brings passion, humor, and discernment to all her work.

Whether it’s a spotlight report on decarbonization, a webinar on ESG, or just a chummy email bulletin, she is ferociously committed to truth and accuracy.

Dear Green Gurus: I'm so sorry to have missed seeing many of you at AIA last week. I heard the BG and COTE events were the highlights of the week! Congrats.

I'm sure by now you've heard of the dreadful Supreme Court decision about the EPA. I thought I'd share a helpful, if not sobering, perspective in an Op-Ed today in the Washington... Read more

THIS WEBINAR PURCHASE AND REGISTRATION IS CLOSED.

Why high-performance assemblies? And why now? Today we demand better thermal performance from our building assemblies than ever. But higher performance... 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

For the fourth year in a row, we’re proud to release our sustainability survey findings, based on the real-world knowledge and experience of our clients and partners, to help determine how sustainability, resilience and wellness are perceived by the commercial real estate industry. We’ve compiled these survey results in our 2019 report, which... 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

Hello Folks,
What is your experience with successes and failures in the design process? As a starting point I have listed my Top 5 for success, and my Top 5 for failure. We'd love to see your reactions and look forward to the discussion when we all meet next week at our monthly check-in.

Top 5 reasons for when integrative design... Read more

As promised at the SDL Summer Summet: Hennepin County Energy & Environment's new Project Manager’s Guide to Material Reuse in Commercial Buildings, with specification language, guidance for procurement, and case studies of successful reuse projects around the country. This resource is meant to help owners, architects, and contractors... Read more

Happy Thursday, all!

I will be presenting with my colleague, Emily Hoffman, and our counterpart from Seattle, Duane Jonlin, on how firms can contribute more to aggressive energy and carbon targets, from the perspective of three people that see thousands of projects each year.  We see the best and the worst, and we're convinced that our... Read more

What better way to follow up the magic of a live presentation from Peter Yost than with 30 free days of BuildingGreen Premium?

Hi all,

The USGBC Pacific Region is launching a new award this year that recognizes projects that have aspires to promote health of occupants and surrounding communities.  In true USGBC style, this award has not been properly publicized, so they are still looking for submissions.  I believe the deadline will be extended to June 7.  I... Read more

Good morning, All,

Just a bit of news this morning.  My family and I are moving back out west!  I am continuing in my current role with EwingCole, but will be doing so from Portland, Oregon.  Although North Carolina has a been a wonderful place for us for the past 13 years, it is time to be close to family in the northwest and southwest... Read more

Hi Everyone.  Hope you and your families are all healthy and safe.

We are starting to figure out how we are going to implement the Contractors Commitment at my company, and we're using the opportunity to simultaneously set corporate wide and jobsite metrics and goals for sustainability tracking.

Each year we issue a sustainability... 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

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