Tag: Airtight

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I often focus on the design aspects of the Passivhaus Standard on this blog. I’m an architect after all. However, while getting the design right is important for passivhaus, getting the construction right is equally important. The Passivhaus Standard isn’t an aspirational standard that sets good intentions but doesn’t follow through. The Passivhaus Standard has the integrity to deliver what it promises.

What does this mean for a builder who is asked to construct a building to the Passivhaus Standard? I explore this question with Darren Macri of Bleu Nest. He shares his journey to becoming a Passive House Builder. He also shares some of the mindset shifts and new ways of working that are needed to build to the Passivhaus Standard. And you get a taste of his infectious humour.

What does it take to be a Passive House Builder?

027 Passivhaus Builder 1
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Our baby was born early in April, just as Spring is arriving here in the northern hemisphere.

Our house isn’t a passivhaus home.

There are many reason’s why we don’t yet live in a passivhaus home, but that isn’t the subject of this blog post. Now with a new baby as well as our toddler, even more so than before, I wish we did live in a passivhaus home. I care very deeply about the comfort and health of our children. And knowing first-hand the benefits of the Passivhaus Standard, I am acutely aware of what we are missing out on.

Affordable to run, comfortable and healthy to live in, passivhaus homes are ideally suited to young families. Of course, passivhaus homes are ideally suited for all people to live in! However, young children are particularly vulnerable and in need of comfortable and healthy homes. And with the cost of bring up children, parents need a comfortable and healthy home to be affordable.

Sustainable and environmental design are often talked about in terms of the benefit for future generations. Unfortunately, despite the good intentions, this can be abstract and vague. The Passivhaus Standard, on the other hand, is a practical immediate solution that benefits the next generation, today.

The Passivhaus Standard ensures homes are comfortable, healthy and affordable to run. Passivhaus homes are of immediate benefit to next generation: our children.

024 Passivhaus for the kids
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Architecture is often described as the combination of art and science. The role of art in architecture is understandably subjective and open to debate. However, what about the role of science in architecture?

Clearly buildings do obey the laws of science, as they must. And specifically, the structure and services of a building are calculated and designed using physics. Understandably, it is most often these areas of science that get expressed in architecture. We can see this, for example, in the structural expressionism of Santiago Calatrava or in the romanticised high-tech style of Richard Rogers.

Aside from structure and building services, however, does science inform architecture in any other ways? Perhaps not as often as it should! As I wrote about previously, design is central to passivhaus. And science is central to passivhaus design – at the macro level of form and orientation, and at the micro level of airtightness and thermal bridging.

Science is a reason to Love Passivhaus!

020 Love Passivhaus Science
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What is the fundamental purpose of a building?

Buildings serve several needs of society – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the outside (a place that at times may be harsh and harmful).
– Wikipedia

As you can see, comfort is fundamental to the purpose of a building. So why do we find it so hard to ensure our buildings are actually comfortable? Why does our ‘world-class’ architecture still fail to provide comfortable buildings to live, work, learn and play in? (Besides using far too much energy and emitting far too much CO2!)

The Passivhaus Standard is known as the world’s foremost building energy efficiency standard. And it is that, but it is also a comfort standard. After all, what is the point of a building being energy efficient (or low carbon for that matter) if it compromises the functionality and comfort of the people who use the building? Passivhaus buildings provide exemplary comfort for the occupants by maintaining a healthy comfortable temperature, by being quiet, by having fresh air and by being draught-free.

Comfort is a reason to Love Passivhaus!

019 Love Passivhaus Comfort
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As the EU moves towards ‘Near Zero Energy Buildings‘ and the UK moves towards implementing this by requiring ‘Zero Carbon Buildings’, understanding the Passivhaus Standard as one reliable route towards delivering ‘Zero Carbon Buildings’ is vital.

Passivhaus is known as the world’s leading building energy efficiency standard. It is also a comfort standard with stringent indoor thermal comfort and ventilation requirements. The majority of industry discussion around passivhaus focuses on the technical details and energy benchmarks required to meet the standard. While this is understandable as we come to grips with the challenges of delivering buildings to such a high standard, there is less attention paid to the benefits delivered by the standard and wider aspects of the passivhaus design process.

11 Passivhaus Pointers
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