Why do we design indoor spaces the way we do? What are the unseen socio-cultural impacts involved and how do they impact other aspects of the indoor environment that we can not see? Today, we're unpacking the idea that our indoor environments are not just passive shelters - they are complex, multifaceted situations with competing goals and perspectives. As our guest, Dr. Liz McCormick shares, our relationship with indoor space is a rich, interdependent web of circumstances that stretches well beyond the boundaries of any single discipline.  We'll be bringing together insights from architecture, anthropology, and ecology to explore the substantial footprint of our built environments—physically, on a scale equivalent to global grasslands and tropical forests; psychologically, as we experience thermal blandness and a disconnect from nature; and ecologically, as we grapple with a misplaced sense of separation from the "dirt" and the world outside our carefully conditioned spaces. This conversation will challenge us to rethink outdated ideas and address why the air we live in—this "material" we are in constant contact with—matters so much for our health. We'll be looking at a comprehensive model for indoor air quality, considering the crucial interactions between pollutants, their pathways, and our exposure. Buckle up for another thoughtful adventure on the Building Science Podcast!

Commissioning Matter - Establishing a Culture of Collaboration Who on the AEC team can deliver strategic guidance, direction, and leadership for the functional aspects of homes and buildings? This is the role of a Commissioning Agent (CxA) and it’s a role that matters now more than ever. The term "commissioning" itself means to "entrust into the safekeeping of someone", with its origins dating back to the mid-14th century, signifying "authority entrusted to someone, delegated authority or power". When it comes to home and buildings, who do we entrust to make sure everything functions as intended and in a way that meets w/ owner satisfaction? This podcast will explore how commissioning plays a similar vital cohesive role in the architecture, engineering, and construction (AEC) industry. Today, we'll delve into what Commissioning is, and what a Commissioning Agent (CxA) does. We'll also cover how commissioning works in practice and where this role is headed in the future. Join Kristof and he and Wes Van Rite unpack this important and timely topic.

How do we expand the positive impacts of our buildings? Now is the time. The building sector is looking at a once-in-a-generation opportunity to flip from being a major contributor to both chronic disease and climate disruption to becoming one of the primary solutions. The key is provide training and perspective to the professionals involved. Why is it that so few architects base design decisions on the known health impacts of buildings at both the personal and community levels? Similarly, why is it that the role of buildings as determinants of health and disease in society is so frequently overlooked by epidemiologists and other public health professionals? In this interview Adele Houghton (FAIA, DrPH, LEED AP) explains how architects, developers, real estate teams and community groups can use their role power and agency to improve outcomes at many levels and scales, for the benefit of all involved. While no single building can entirely transform a neighborhood's character or its susceptibility to environmental factors, thoughtful design can enhance the health and well-being of residents and businesses, reducing financial risk and contributing to local policy goals.

“It’s time to rethink the idea that architecture does not sully itself with social or ecological ills.” Jonathan Feldman (in conversation w/ KI) The practice of architecture is a place where ethics and aesthetics converge. We make decisions and lead our lives based on ethics. As such ethics is concerned with what is good for individuals and society. Aesthetics is a set of principles that are involved with the nature and appreciation of beauty - the aspect of an object that makes it pleasurable to perceive. Join us in this interview with two thought leaders whose work locates them at the convergence of ethics and aesthetics. As a Founder and a Principal at Feldman Architecture, Jonathan and Anjali care about the craft of architecture and recognize the importance of the role power of architecture in society. This shows up in their design work on projects as well as how they design firm culture and practice. Being “thought leaders” is no walk in the park, it puts you in situations where you feel lonely, overwhelmed and disheartened at times, it asks you to take a stand. As you’ll hear in this interview, moving the industry forward with design thinking that includes carbon accounting, human health, and regenerative practices starts with a willingness to be humble and recognize that risk and reward are often two sides of the same coin.

Risk is real in the AEC. True risk management isn't about avoidance, but about informed engagement.Homes and buildings today measure success in many ways, each of these represent a potential failure mode. Managing risk means recognizing and embracing it, this is a core message from our guest today. Joe Basham is a seasoned construction industry attorney with decades of experience, a keen mind, clever wit and the ability to cut to the heart of the matter. Join Kristof and Joe as they delve into the critical role of risk management in the design and construction process and unpack real world ways to navigate challenges with demanding clients, the importance of clear contracts, the power of proactive project management. The discussion also focuses on the impact of new project delivery methods, the rising costs of professional liability insurance and evolving liability concerns in the larger context. Discover how architects are adapting by focusing on design leadership, leveraging consultants, clear contract language and the importance of having open and respectful relationships with all stakeholders.  We explore the arriving potential of AI to revolutionize the design profession, offering increased efficiency and informed decision-making - recognizing that this is also a deep change and one that comes with implicit risks and rewards.  One final thought is that the ultimate de-risking move is to design thoughtfully, build carefully and maintain open communication and realistic expectations at all times!

In this special episode of the Building Science Podcast Kristof is joined by Ilka Cassidy of Passive House at NESEA's BuildingEnergy Boston '25. Ilka and Kristof are joined by the following inspiring speakers and organizers of NESEA 25: Jacob Deva Racusin, New Frameworks Natural Design/Build Andrew Himes, Carbon Leadership Forum Laura Bailey, Vermont Council On Rural Development Heather Ferrell, Prism Design Lab They dive in to the conferences main take aways, lessons learned, and calls to action.

Keep an ear out for an easter egg after the outro on this one. The Significance of Buzzwords in the AEC Industry The words we use matter. Terms like "sustainability”, “net zero” and “resilience” signify our industry's evolving priorities and concerns. These “buzzwords” reflect current cultural circumstances within the AEC industry and larger society while also actively shaping how we approach and address these issues.  In this episode will be exploring the meanings and relationships between many of the current buzzwords that are alive in the AEC today. If you’ve ever wanted to deepen your understanding of words and terms like “sustainability”, “net zero”, “embodied carbon”, “circular economy”, “resilience” or “adaptation” you’ll appreciate this interview w/ Kjell Anderson of LMN Architecture in Seattle. Yes, buzzwords come and go. We routinely air quote them somewhat irreverently. But do not be fooled - buzzwords are also important. Far from being superficial, these trends in language mark the emergence, acceptance, and eventual integration of new, often significant, ideas. When a word gains prominence, it often signals a collective reckoning with the issue it represents. Conversely, when it fades, it may indicate that the idea has either been absorbed into the mainstream, superseded by more urgent concerns, or—sometimes quite worryingly—been deprioritized. Dictionary definition of “Buzzword”:  (pejorative) A word drawn from or imitative of technical jargon, and often rendered meaningless and fashionable through abuse by non-technical persons in a seeming show of familiarity with the subject.

“The world is not made of atoms, the world is made of stories” Muriel Rukeyser “Where do buildings come from?” is a question that comes with a story. Less often asked, “Where do buildings go?”.  The evolving story human society tells itself in answer to those questions is worth unpacking thoughtfully. That’s what happens in this episode. Join Kristof as he shares a conversation with Greg Esparza on the power of storytelling and the connection between stories and the materiality of buildings. The power of storytelling is clear in the ability to connect people, foster empathy, and transmit knowledge and shape cultural values. The materiality of buildings is itself a response to storytelling.  Every building belies the presence of an underlying story about our relationship with nature. At every step of the design and construction process we make decisions. What are those decisions based on? Unfortunately the answer is not often evident and is likely tangled up in outdated ideas based on stories that no longer make sense. The importance of biogenic building materials as an emerging theme in the AEC is not just their materiality, it’s deeper. It is the story of us all coming to our senses - both literally and figuratively - our senses of sight (of course), sounds, smells, and textures - while also thinking about where buildings come from and where buildings go.  Ultimately the choices we make in how we deliver homes to ourselves impacts our felt sense of life altogether. Why not curate materials for our homes that actually make us feel good? Turns out when we do this we find that these same decisions support the AEC’s ultimate triple bottom line of healthy homes, healthy people, healthy planet.

The tension between aesthetics and performance in architecture is a critical and complex issue in contemporary design. Architects are increasingly and appropriately being tasked with designing buildings that are not only beautiful but also functional in terms of impacts on owners, occupants, resources, and planetary ecosystems. The contrasting view, one where architecture is principally form-making comes at its peril. As Juhani Pallasmaa cautions, following this path  “The world becomes a hedonistic but meaningless visual journey” Navigating the path between form and function is central to the role of architecture in our society. It is also the backdrop to the daily routine for our guest in this episode. Keith Simon FAIA is both an architect and an enclosure consultant, two roles that move him from one vantage point to the other continually. As Keith says in this interview Architects could be leading many of the changes society needs now but are not. I think we should all look introspectively and ask “Am I prioritizing the right things?”. This episode is both a tribute to the importance of architecture and an appeal to prioritize the lived experience of homes and buildings over the hedonic sculpture on the cover of the glossy magazine. The themes touched on here will ripple out through the AEC for the rest of our careers. It’s both important and captivating to reflect on them now. Enjoy!

Join Kristof and Corey Squire in this third and final installment of their interview series discussing Corey’s book People Planet Design. In Part 1, they opened the discussion at the logical starting place of the important Why questions. Why design matters to society and Why architecture is the place to address so many important issues we face today. Part 2 addressed How to make good design happen by focusing on often overlooked dimensions of the design process. These include company culture, communication and information flow, and the importance of positive incentives. Here in Part 3 is where the rubber meets the road in the form of the What question - What types of systems do we actually design? What do we actually do during the design process? This conversation flows across ten different architectural systems that each correspond to a chapter in Corey’s book. The systems covered are (1) Scale; (2) Windows; (3) Air; (4) Roof; (5) Electricity; (6) Structure; (7) Embodied Energy/Carbon; (8) Interior Finishes; (9) User Behavior, and (10) Access/Equity.

What is the future of dehumidification? Turns out this simple question opens up an exciting view of the future of IAQ generally. The goal of a low energy method for removing water molecules from a flowing airstream boils down to some way of identifying, grabbing and holding onto them. Essentially we are talking about a designer desiccant or molecular filter that lets the air pass through while it filters out water molecules. If we can do this, the next logical question is “Why stop there?” Why not identify a broad range of pollutants and contaminants in the airstream and also select and remove them as well? Enter molecularly sensitive filtration based on Metal Oxide Framework (MOF) technology. MOFs are a type of advanced material that scientists are developing to tackle a wide range of challenges, from clean energy, to environmental protection via direct air carbon capture (DACC), to health and drug delivery.. While the name may sound complex, the basic idea behind MOFs is relatively simple—they are materials made by combining metal ions (like zinc, iron, or copper) with organic molecules to create a kind of 3D structure that is highly porous, meaning it has lots of tiny holes or cavities - and they operate as a molecular sieve or filter. Join Kristof as he interviews Todd DeMonte of Madison IAQ to unpack the future of dehumidification and learn about desiccants, and the potential for metal oxide frameworks. Along the way we learn whether the “good old” compressor-based dehumidifier is likely to remain the preferred and appropriate approach for many years to come. This is an episode that will bring you up to date at this important edge of the industry. Enjoy!

Passive house has become synonymous with the rapidly arriving new normal for our homes and buildings and offers layers of positive outcomes. Thermal comfort, IAQ/IEQ, durability, and low energy use are typically the incentives for owners, architects, builders and trades. As it turns out, there may be broader societal benefits tied to thoughtfully managing heat flows in and out of a building as well. Good ol’ thermodynamics isn’t getting the flashy attention of solar PV, wind turbines and batteries, but the demand side may well be where we win this fight to protect ourselves and our planet from the worst, most devastating impacts of the climate crisis. Join Kristof in this wide-ranging conversation with Lisa White, the Co-Executive Director of Phius, where they unpack the positive ripple-out impacts that passive buildings have on our energy grids, and our decarbonization efforts. Seen holistically, buildings are a powerful enabling technology for the ongoing energy transition away from fossil fuels to renewable sources of energy. Starting with a perspective on the current state of the grid and its ongoing evolution, the conversation here positions passive buildings in relation to the decline of the fossil fuel era and the dominance of renewables.

Empowering the practice of architecture to achieve consistent, predictable, positive impacts on human well-being and planetary health is perhaps one of the most pressing topics in the AEC today. Starting with a review of the history of the search for Bioclimatic Law, this conversation with Dr Bill Braham, FAIA is an invitation to architects to reclaim their power.  Bioclimatic Law is the relationship between architecture and life. In practice “life” is more narrowly defined by architecture as “comfort” or “comfort, health and well-being”. At its core bioclimatic design asks “What are the climate opportunities?”. The basic principle is to start with a clear understanding of the ambient climate and map those inputs to the design of the building - its massing, orientation, enclosure systems, and window sizes, locations, and shading devices. Beyond these truly passive methods, there are always active systems involved in maintaining a balance between heat flowing into the building and heat sources within the building. Our buildings mediate between the external climate and our lives. From a thermal perspective, actively managing the enclosure can lead to comfortable indoor conditions 60-80% of the time in most climates. From a well being perspective, as the external climate becomes more unpredictable and severe we have an opportunity to improve the quality of the lived experience of the buildings we deliver to ourselves to protect and shelter us. Join Kristof as he and Bill enjoy a thoughtful, wide-ranging discussion about the role of architecture in society and the role of buildings as extensions of our lives and goals.  Big picture, we also want to thank you for being listeners who, in our increasingly soundbite world, appreciate the depth, breadth and subtlety of conversations like this. We’re happy that you’re noticing and valuing that we “go there” in these idea exchanges. Please keep your emails and comments coming.

The work of the AEC is broader than buildings. On a daily basis we, collectively and individually, make decisions that have broad and lasting impacts on our lives, our health, and our world. These impacts can be either positive or negative; the choice is ours. This is the perspective of Gina Ciganik and her brilliant and motivated team at Habitable.  Armed with powerful minds and compelling data, they are working to help society rethink material supply chains altogether. Formerly the Healthy Building Network, Habitable exists to help people understand that we need to fundamentally shift the materials economy to protect ourselves and our planet's ecosystems. These are also the people who created the Pharos database. Now they are releasing a powerful tool, The Informed Tool, to make it easy to make good decisions for materials using a simple Green, Yellow, Red system. It’s time to start. If the term materials economy is somehow just a bit bland and doesn’t connect or feel engaging for you, consider these two facts to remind you of what we’re talking about: 1. Microplastics in the ocean: 58% of them are from one material - Paint. And 48% is from paint used in homes and buildings. We know latex gloves are plastic but somehow we forget that latex paint is as well. If we are going to ever get the plastics out of our waterways, oceans and bodies, we have to address this material and the upstream decision making process.  2. Carpeting as single use material: 2 Millions Tons of carpeting are thrown into landfills and incinerators in the US every year. Our national obsession with fuzzy floors uses more plastic than all single use plastic bottles, plastic bags, and plastic straws combined (mic drop).  OK, did those wake you up and help you understand that the decisions we make here in the AEC have implications and impacts far beyond what we normally consider our purview? Join Kristof and Gina in this lively wide ranging discussion as they unpack the work that Habitable is doing.

How can we build better supply chains for the built world?  When it comes to the inconceivably vast amount of wood we use in our buildings, one “simple” way is to use less virgin material and use more wood that would otherwise not make it to market. Instead it would be destined to decompose and emit its carbon into the sky. What if, instead, the forgotten trees were salvaged and turned into valuable, usable lumber?This is a big idea whose time has come. Still, having a powerful idea is only the first step. Making it happen in the real world is the other side of the story. Starting with a focus on a smarter, more transparent wood supply chain, the ambitious team at Cambium Carbon are making powerful change happen in the human side of the wood ecosystem in the AEC. Their work is a key support for firms committed to sustainability.  Join Kristof in a thoughtful conversation with Ben Christensen to learn more about what Ben and his team are doing to find wood impacted by the four Ds: disease, decay, disaster, and development and keep it out of landfills. Instead of landfills the wood goes back into the built world for generations to come.

Today we’re continuing the conversation on modular construction w/ Rommel Sulit and Chris Krager. Buckle up for some quotable quotes and impactful ideas in this episode. A recurring theme from part 1 is present here. Could it be the case that because modular delivery must rethink basic assumptions, it may be the first area of the AEC to do what the rest of the AEC is not. At core, the role of architecture is to create the link between design intent and what is actually built. This is not easy, nor simple. It means managing multiple streams of expertise and action so that they are effectively coordinated and integrated into a finished livable space. Modular requires a high resolution understanding of why we build the way we do, what are its strengths and weaknesses, and, particularly, where are the key leverage points to unlock change. Because as they say in this episode, there’s no way around the reality that when it comes to AEC practices, We have to Pivot at somewhere. Modular delivery is perhaps, at heart, a recognition of this truth.

How often do you think about modular construction? Is it an idea whose time has come? There are those who view it as the only path forward that realistically checks all the boxes - are they right? The potential is clear, modular project delivery can save time, save money, and positively impact our current and looming labor and skills crunch on the construction side of the AEC. There is no doubt that relative to the current norm, the “holy triumvirate” of owner, architect builder*, modular delivery represents a disruptive force within the AEC. Modular may be exactly the solutions we need but also one that we are not currently embracing at scale. Why is that? What are the challenges and the opportunities for modular design, construction and delivery? Join us today to unpack those questions and more. Whether you’re a seasoned modular developer or just a curious newcomer and novice this podcast has something for you. Kristof is joined by Chris Krager and Rommel Sulit who, collectively have soaked up decades of experience and expertise in the modular space. One of the challenges to understanding modular design and construction is that it is dynamic and evolving. This confluence of financial, technical and material perspectives means different things at different times to different stakeholders. Along with our society and the AEC industry, modular has a path quality, it is not static, by some accounts where we are now is Gen 4 modular. To fulfill its potential modelar delivery needs to reach backward to influence the design process and also to reach forward to construction. This reality, while challenging, is long overdue and it is perhaps the most relevant and powerful benefit. It forces, or at least strongly encourages, the AEC to finally do integrated project design and delivery at scale. *Quote by Rommel in the podcast

Who knew that an indoor pickleball facility could become a touchstone for high performance construction based on passive house principles? The backstory here is worth unpacking as it relates to a powerful force that is not often discussed - money. Return on investment is the aim of the game in the realm of real estate investment and this fact typically filters out high performance passive buildings - but not this time, and it is important to understand why. Our guest today is adept in both the financial and the construction realms and has been able to make a solid case for the value of passive construction in his latest development.  Beyond the financial angle, this project aim to showcase high quality construction while also fostering community through sport. Plus with the heat and humidity of the Texas summers playing sports indoors makes it far more accessible to people. Join us in this thought-filled interview with David Komet of Urban Earth to hear about his journey and learn what he’s doing with his new pickleball facility as he prioritizes the health of the community, the local environment, and the planet.

At a fundamental level, passive house practitioners are engaged in a rebellion against poor quality design and construction. It’s becoming quite clear that this rebellion has legs and will endure. Given this, a question worth unpacking is whether the durability of the passive house movement is emerging as an architectural style. What are the defining principles behind architectural aesthetic decisions in the context of high performance homes and buildings? What will the history books say about our little rebellion in the years to come? Join us in this rich and thoughtful discussion with two powerful voices at the top of their game in the passive house realm.

Big news! The Humid Climate Conference is coming back to ATX and it’s time for some appropriate FOMO. We’re just two weeks out. You will be so glad you made the decision to come to HCC in ATX. Both the technical knowledge and perspectives you’ll hear, as well as the realization and experience of the power, vitality and unstoppability of the growing community of folks in the AEC that are stepping up to move our industry and our society forward.  The theme for HCC’24 is Transitions. The  work we do in the world as architects, developers, builders, trades, and even owners is important and it is also going through a series of transitions that together represent an altogether new way of delivering buildings to clients and communities. The Energy Transition, the refrigerant transition, the transition to lower carbon designs, both embodied and operational, are all “in play” right now. Now is the time to learn about them from visionary thought leaders and boots on the ground who are both showcasing these transitions and helping make them happen.  Here’s the HCC website and here’s the link to buy tickets.  Code to get $50 off is shared on the podcast!