Photo by Andreas Lechtape, courtesy NBK Architectural Terracotta
The building envelope protects us from the elements, enables comfort, and ultimately allows us to be at home in our houses, to be productive at the office, to learn in school, or to heal in the hospital.
A building envelope—also commonly called a "building enclosure," should:
not poison us or the planet
allow us to breathe clean air
When possible, it should do all this while using resources effectively—durably, energy-efficiently, and with low embodied impacts.
Here you’ll find strategies for envelope design and material selection that help balance all these demands and more.
Is it time to end our love affair with the all-glass building? A lot of proponents of high-performance, green design certainly think so-while other respected architects, including some leading green designers and energy experts, argue that all-glass can work well if done right.
Even if we stopped emitting greenhouse gases tomorrow, rising global temperatures would still bring major changes to the climate system and our way of life. This article offers solutions for designing buildings that not only mitigate our impact on the global climate, but also adapt to the changes that are coming-and those that are already here.
Polystyrene is widely used as a rigid insulation in North America, offering high insulation values, moisture resistance, strength, and affordability. But a flame retardant in the material, as well as its life-cycle impacts, raise questions about whether it should be used at all.
Between lighting, water use, mechanical systems, the building envelope, and occupant health, existing buildings are rife with cost-effective retrofits and operational opportunities that also offer environmental benefits. Improvements range from the painfully obvious to the more complex and involved.
Incorporating a continuous air barrier into a building's design and construction can save energy and improve the indoor environment, among other benefits. The right materials and assemblies can help accomplish that goal, but careful attention during design and close oversight during construction are essential.
Prefabricated housing offers several potential environmental benefits, including reduced transportation impacts, reduced waste, and quality control for better durability and performance. Aside from a few industry leaders, however, most manufacturers do not take full advantage of those efficiencies to create affordable high-performance houses.
Greenhouse gas emissions associated with residential energy use account for a fifth of all emissions in the U.S. Retrofitting existing houses to achieve a two- to three-fold reduction in energy use is necessary if we are to achieve the emissions reductions scientists say are required for avoiding catastrophic climate change. Here's a look at how it can be done.
Buildings and their occupants are vulnerable to threats ranging from storms and rising sea levels to accidents and terrorism. In this feature article, EBN describes how to design and construct buildings to maintain livable conditions in the event of extended power outages or loss of heating fuel or water.