Editor's Note
This editor’s note highlights the key facts and market implications behind “Green Building: A Complete Guide to Sustainable “, with emphasis on sourcing, product fit, fabrication, logistics, or buyer impact.
What is Green Building?
The construction sector generates roughly 40% of CO2 emissions in the European Union. This stark figure alone clarifies why green building has rapidly shifted from a niche for visionaries to a strategic necessity for the entire industry. This term identifies a design and construction approach centered on three inseparable elements: environmental sustainability, occupant well-being, and energy efficiency. However, it would be reductive to think that simply using materials labeled as "green" is sufficient. Green building rethinks the entire building lifecycle, from site selection and design to the construction phase, ordinary maintenance, and finally demolition and component recovery. The goal is ambitious yet concrete: to reduce the overall environmental impact without sacrificing living comfort, structural safety, and long-term durability. This balance requires multidisciplinary expertise and an integrated project vision, where architects, engineers, systems specialists, and clients work in synergy from the earliest decision-making stages. It is not utopia. It is engineering applied with ecological awareness.
The Fundamental Principles of Sustainable Construction
Green building rests on well-defined pillars, each with measurable impacts. The first is energy efficiency: a green building must consume the absolute minimum, leveraging passive solar orientation, advanced thermal insulation, and high-performance systems like heat pumps and controlled mechanical ventilation. The second principle concerns indoor environmental health. Materials that do not release volatile organic compounds, optimized natural ventilation, and lighting calibrated to daylight: every design choice directly impacts the quality of life for the occupants. Then there is the increasingly central theme of circularity: materials must be recyclable or reusable at end-of-life, reducing the flow to landfills. Finally, the relationship with the territory. A green building dialogues with the climatic and landscape context; it does not contradict it. These principles find concrete application in international protocols like LEED, BREEAM, and our own Protocollo ITACA, tools that translate good intentions into verifiable and certifiable parameters.
Materials and Construction Techniques
Glulam, hemp, cork, raw clay, compressed straw. The list of materials used in green building has expanded enormously in the last decade, overcoming old prejudices about their reliability. FSC or PEFC certified wood remains the absolute protagonist: lightweight, strong, an excellent thermal insulator, and capable of storing carbon for the entire lifespan of the building. Cross Laminated Timber (CLT) structures now allow for the construction of multi-story buildings with seismic performance superior to traditional concrete, a crucial advantage in a country like Italy. For thermal insulation, panels made of wood fiber, sheep's wool, or expanded cork are used—materials with a minimal ecological footprint compared to petroleum derivatives. Construction techniques range from dry prefabrication, which reduces construction waste by up to 80%, to 3D printing with bio-based materials, a still experimental but promising frontier. Technological innovation is not lacking. Rather, it is market demand that still needs to grow, driven by greater client awareness and more incisive public policies.
The Italian Regulatory Framework
In Italy, green building does not have a dedicated, comprehensive law but operates within a complex and layered regulatory network. The main reference is Legislative Decree 192/2005, which transposes the European directive on the energy performance of buildings and imposes minimum efficiency requirements for new constructions and renovations. This is complemented by Ministerial Decree of June 26, 2015, known as the "minimum requirements" decree, which establishes technical parameters for new buildings and major refurbishment interventions. Regions play a crucial role in this game: many have adopted building regulations that reward or impose stricter sustainability criteria than national legislation. Lombardy, Trentino-Alto Adige, and Emilia-Romagna are among the most advanced. The Consolidated Building Act (Presidential Decree 380/2001) provides the general framework, while the Minimum Environmental Criteria (CAM) have made the use of sustainable materials mandatory in public procurement since 2017—a regulatory step often underestimated but of significant scope for steering the market.
The Relevant European Directives
The most powerful regulatory engine for green building comes from Brussels. Directive 2010/31/EU (EPBD, Energy Performance of Buildings Directive) introduced the concept of nearly zero-energy buildings (nZEB), made mandatory for new public buildings from 2019 and for all new buildings from 2021. Its revision, approved in 2024 as EPBD IV, raises the bar even further: all residential buildings must reach at least energy class E by 2030 and energy class D by 2033.
Source: Read the original article | Published: April 01, 2026