By Evelyn Long, editor-in-chief of Renovated
The building sector’s climate mark is one of the most notable and long-lasting compared to any other industry. The up-front emissions and lifetime impact demand experts change how they erect new constructions, perform renovations and undergo retrofits. Simply using salvage, reclaimed and upcycled materials may slash the footprint to make construction more sustainable.
Understanding Restorative Building Projects
A restorative building project focuses on taking an existing site and bringing it back to its former glory. If executed properly, the work could save the environment from unnecessary pollution and destruction. Many new constructions also eliminate habitats, thinning biodiversity — the instances of this phenomenon would also lower.
The situations are endless, demanding wide expertise from workers. An office might be abandoned because it was waterlogged from a hurricane. A century-old mansion could have been overrun with invasive plants and harbor ancient insulation. Both circumstances — and many others in-between — would necessitate restoration.
The process is about working with already existing components, equipment, materials, and structures instead of demolishing the building and working from the ground up. No matter how old or damaged the location is, saving it prevents virgin material sourcing and other environmentally exploitative activities from taking place.
There has been a rise in restorative projects in worldwide architecture inspired by lowering greenhouse gas emissions and waste generation. It is also possible because innovators have created more effective solutions for rehabilitating these buildings with technology. The Villa Heike in Berlin, Germany, and the Notre Dame in Paris, France, are several legendary examples of the power of restoration.
In addition to the ecological motivations, restoring buildings has another practical purpose — to keep up with demand. The global population is constantly increasing, with insufficient housing to let everyone live comfortably.
Defaulting to stick-built structures every time a family needs a home is unsustainable when considering time investments. Workers cannot build faster than demand, especially as labor shortages still plague the sector with over 439,000 vacancies. Therefore, restorations with salvaged materials open doors to new housing in a fraction of the time and effort.
The Role of Salvaged Materials in Restorative Building Projects
Understanding this construction revolution requires professionals to know what each resource means. What is the difference between salvaged, upcycled, recycled and reclaimed materials?
- Salvaged: Harvests components from the byproducts or waste of construction material creation
- Upcycled: Repurposes items for a different application
- Recycled: Breaks down existing things to create new items
- Reclaimed: Takes postconsumer or industrial materials from any source
The terminology mostly expresses their origin instead of the material type. Reclaimed wood is popular, while salvaging brick and masonry is another avenue. This could also go beyond construction materials and represent more nuanced aspects of the building, such as fittings, fixtures and even insulation. The purpose of restorative projects is to find sustainable, creative ways to use as much as possible, so everything is up for grabs so long as it still abides by current codes.
Why Restorative Building Projects Are Environmentally Friendly
Recycling existing components makes a building leave a more positive impression on the planet. What can that look like?
Better Life Cycle Assessment (LCA)
The LCA reviews the construction’s environmental impact from the beginning to the end of its expected life. If workers keep lengthening it so it never gets demolished, with rubble and debris sent to landfill, then the LCA will shine. It helps at every stage of the process.
For example, embodied carbon describes the greenhouse gas emissions associated with the resources it needs to operate. This includes the impact of the harvested materials on the space’s energy use over time. It can also refer to waste generated from renovations. Embodied carbon represents a large portion of infrastructure’s footprint, and using carbon-neutral and recycled materials is one of the best ways to start combating it.
Lower Waste Generation
Construction and demolition (C&D) waste includes everything from drywalls to bricks, but it also contains other elements like carpets and porcelain toilets. Destruction produces between 25%-45% of the U.S.’s solid waste by weight, and it could be higher.
Most of the time, these trash mounds include toxic contaminants that harm soils and waterways in addition to adding to the problem of growing landfills. Tearing down fewer buildings and restoring them instead alleviates this issue.
Reduced Reliance on Natural Resources
Deforestation and overmining are inherent to construction. They have been the historical go-to methods for obtaining components professionals need quickly and cheaply.
However, forests are disappearing worldwide, and ground materials like clay and sand are being dug out to the point of leaving wounds in once-flourishing ecosystems. Prioritizing mass deconstruction over demolition could let millions of tons of materials stay in and on the Earth, housing and supporting wildlife.
Greater Energy Efficiency
Destroying and rebuilding require copious amounts of power, especially when powering heavy machinery and constantly transporting components and waste. Rehabilitation projects may need to retrofit the building with greater insulating properties to make it energy-efficient, but this creates less waste than a new project.
More Substantial Certifications
Recycled, salvaged and reclaimed materials can have numerous stamps of approval from the world’s leading green construction organizations. These could include:
- Cradle-to-Cradle
- Living Building Challenge
- Leadership in Energy and Environmental Design
- Forest Stewardship Council
- Green Globes
- National Green Building Standard
This means the buildings followed the industry’s leading recommendations for more sustainable building creation, setting a new precedent for the future.
Deeper Eco-Social Balance
Preserving habitats benefits biodiversity and communities. C&D activity disrupts neighborhoods, continually stripping them of resources and leaving them in disarray.
Allowing communities to restore their buildings with local materials also empowers Indigenous and other minority populations. It encourages them to maintain their traditions and heritage by choosing which construction methods align with their values.
Enhanced Materials
Recycling, salvaging and reclaiming materials gives buildings the chance to come back stronger. An experiment demonstrated how recycled concrete mixed with construction waste like fly ash improves its compressive and tensile strength.
The Benefits of Using Salvaged Materials and Upcycling in Construction
With the environmental advantages already clear, what are the other benefits builders can anticipate when working with recycled materials?
Tighter Budgets and Economic Advantages
The cost-effectiveness of reclaimed materials severely reduces a project’s budgetary needs. It makes builds more accessible and justifiable, even for small- to medium-sized firms. It also supports local economies and businesses, allowing them to grow, especially if they provide some of the necessary materials.
Preservation of Historical Charm
Not all buildings have historical significance, but restorations have an undeniable aesthetic appeal that is unattainable in new construction. Every home would be more individualistic and unique, especially since the customization options with upcycled materials are so vast.
Prioritization of Durability and Quality
Older construction materials are known for having longer-lasting qualities. The craftsmanship had a different standard, and the workers were less pressured to focus on output. Therefore, preserving as many high-quality buildings as possible means more structures are likely to withstand the impacts of the climate crisis. It also supports a circular economy by keeping local resources in circulation to facilitate new projects.
Expanded Educational Opportunities
If more buildings are being openly restored, people of all ages will have a chance to learn more about their region. The more connected they feel to its architecture and resources, the more likely they will feel drawn to protect it. Community engagement in restoration projects is also common, especially when it comes to enhancing the landscaping in front of these treasured sites.
Case Studies of Successful Restorative Building Efforts
These are some of the world’s most famous examples of groundbreaking rehabilitation projects that inspired the world to keep up the trend.
The High Line, New York City, U.S.
An antiquated railway-turned-garden is one of the most iconic green spaces in the U.S.’s most legendary concrete jungle. The project advocates for expanding access to natural third spaces for citizens, which can boost their mental health and desire to advocate for the planet. The area has brought biodiversity to the community while supporting urban heat island reductions.
The Old Post Office, Washington, D.C., U.S.
One of the oldest post offices in the capital has turned into a hotel. These are some of the most popular rehabilitation projects, with efforts potentially increasing by 59% year-over-year.
Since 1934, the Old Post Office has faced calls for demolition, with people thinking it looked outdated all the way back in 1899. Now, the interior has been renovated to fit modern tastes, but the exterior boasts a historic impact. The observation deck was preserved so guests could view the city’s most iconic landmarks from their rooms.
The Tate Modern, London, U.K.
The Tate Modern is an old power station and now bustles as a tourist attraction. It’s a converted contemporary art museum, with its turbine hall left intact as if it were part of the exhibition. This adaptive reuse added to the ambience of the place, increasing local economies through tourism and education.
The Gasometer, Vienna, Austria
Four gas storage tanks towered over Vienna, and now they are a collection of residential and commercial buildings representing over a century’s worth of construction excellence. Their charm comes from their eye-catching shapes, making them a technical and artistic marvel. The facades are original yet include modern living amenities.
Supporting Salvage
The advantages of salvaged material usage go beyond the environment, though it is an essential part of the conversation. Construction professionals must leverage these resources to house families and enterprises as fast as possible while using ecologically sound methods. Doing so will make built environments better prepared to face climate change. It will also bring neighborhoods together, deepening their connection to their area by seeing history continue to stand.