Giving buildings a new, green lease on life

Hempcrete, a combination of hemp, water, and lime, can be used as a more sustainable insulation option for buildings. The material improves energy efficiency, produces less carbon than options like fiberglass and foam, and will continue to capture carbon while used as insulation.

Instead of demolishing a campus building in need of many renovations Rockhurst University repurposed it. The focus on sustainability during the rebuild made it the most energy-efficient building on campus and prevented the release of the carbon embedded in its concrete.

Apartments at Front Flats, a new residential building in Philadelphia, is powered by 492 solar panels that are wrapped around the building. The point: to demonstrate that developers can design buildings that are energy-efficient and be built at an affordable cost. It’s not clear yet if the building is “net zero” in terms of producing as much energy as it consumes, but residents are paying only $40 a month for utilities.

More and more commercial real estate projects are popping up around the United States that are focused on “deep green” building. This movement suggests that it’s not enough to just make a building out of renewable materials, but they can also be self-sustaining. For example, the Watershed, an office building in Seattle, has a slanted roof that collects rainwater that is then used in toilets. These types of projects can be more complicated and expensive to build, but developers can save money in the long run with the improvements.

A collaborative partnership among local and national organizations made it possible to install solar panels on 10 Greensboro homes for free. Because of this effort, many low-income families have seen a significant decrease in their energy bills and an increase in value of their homes. Although convincing people to install the panels was a challenge, organizers are now figuring out how to scale the initiative and make it sustainable in the longterm.

A warehouse in Switzerland is being transformed into new creative workspaces. The catch: It’s being constructed out of reused building materials. About 70 percent of it is being made from old materials like wood floorboards, steel beams, and windows. A network of treasure hunters are on the lookout for used materials that can be used in constructing these buildings. The workspace is nearly complete and it already has tenants for all of the spaces. They were also able to cut the building’s carbon emissions in half.

The Massachusetts state government introduced a new building code, called the specialized stretch code, to set new construction up for decreased fossil fuel use. It’s an opt-in code, so municipalities vote on whether to adopt it, and many have.

Architects in Vietnam are creating climate-resilient buildings with nature-based designs and materials that adapt to the local weather to reduce the building’s emissions throughout its lifespan by naturally regulating the temperature.

Bamboo is growing in popularity as a cheap, sustainable building option that can replace hardwoods and other common construction materials.

A building material made of hemp fibers, water, and clay or lime is a sustainable alternative to other options like concrete. Dubbed hempcrete, the product has many benefits including a very low carbon footprint, active sequestration of carbon dioxide, and using a sustainable, fast-growing crop as its base.