Short answer

Incorporate life cycle thinking and circular economy principles from the outset of renovation design, prioritizing material reuse and designing for future deconstruction.

Field: Sustainability
Source: Buildings (2025)
Method: Case Study Analysis
Evidence: Strong effect

Prioritizing reused materials and designing for disassembly in building renovations significantly lowers embodied carbon emissions and improves the overall sustainability profile. This sustainability research insight is drawn from a 2025 study published in Buildings. Using Case study analysis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Incorporate life cycle thinking and circular economy principles from the outset of renovation design, prioritizing material reuse and designing for future deconstruction.

Study

SustainabilityNew This WeekStrong effect

Circular renovation strategies can reduce embodied carbon by up to 94% through material reuse.

Prioritizing reused materials and designing for disassembly in building renovations significantly lowers embodied carbon emissions and improves the overall sustainability profile.

Buildings · 2025

Key Findings

01Circular insulation options using reused materials and designed for disassembly achieved the lowest embodied carbon emissions.
02Reused PIR insulation demonstrated a 94% reduction in embodied carbon compared to new PIR boards.
03The inclusion of Module D (end-of-life considerations) can alter the ranking of renovation options depending on the specific scenario.

Application

Design takeaway

Incorporate life cycle thinking and circular economy principles from the outset of renovation design, prioritizing material reuse and designing for future deconstruction.

How to apply

When specifying materials for building renovations, conduct a life cycle carbon assessment that includes embodied carbon from reused materials and design for disassembly, then use multi-criteria decision analysis to rank options based on sustainability goals and stakeholder preferences.

Project actions

01When choosing materials for your design, think about where they come from and what happens to them at the end of their life.
02Consider how easily your design could be taken apart and its components reused or recycled in the future.

Method & Evidence

AimHow can a framework integrating life cycle carbon assessment and multi-criteria decision analysis support the identification and sequencing of circular renovation measures?

MethodCase Study Analysis

ProcedureA novel framework was developed to combine life cycle carbon assessment (operational and embodied, including Module D) with multi-criteria decision analysis. This framework was applied to a residential building renovation case study in the Netherlands. Various renovation measures were evaluated based on carbon emissions, energy use, cost, payback period, and disruption, with homeowner preferences incorporated into the final ranking.

ContextBuilding Renovation, Circular Economy, Sustainable Design

Variables

IV["Type of insulation material (new vs. reused)","Design for disassembly (yes/no)"]

DV["Embodied carbon emissions","Embodied-to-operational carbon ratio (EOCR)"]

CV["Building type and size","Operational energy use intensity","Cost of renovation","Payback period","Disruption level"]

Strengths & Limitations

Strengths

+Integrates both operational and embodied carbon assessments.
+Includes multi-criteria decision analysis to reflect complex trade-offs.
+Introduces a novel metric (EOCR) for evaluating circularity.

Limitations

The availability and quality of reused materials can vary, and the cost-effectiveness of designing for disassembly needs careful planning.

Reliability & validity

The study's validity is strengthened by its application to a real-world case study and the use of established LCA software. Reliability would depend on the consistency of LCA data and the robustness of the multi-criteria decision analysis model.

Think critically

How might the availability and cost of reused materials influence the practical application of these findings in different geographical or economic contexts?

Design Principles

"Embrace circularity in material selection and design for deconstruction to minimize environmental impact throughout a building's lifecycle."

This insight is crucial for designers and engineers involved in the built environment, as it highlights a tangible pathway to drastically reduce the environmental impact of building renovations. By focusing on circular economy principles, projects can achieve substantial carbon reductions, aligning with global sustainability targets and potentially reducing long-term operational costs.

What This Means for Your Design

Using old materials that can be taken apart later for building renovations can make them much better for the environment, cutting carbon pollution by a lot.

How to use in your project

1.Reference this study when discussing the environmental impact of material choices in your design project, particularly concerning embodied carbon and circular economy principles.

Add to My Project

Quick Cite

Paragraph starter

This research highlights the significant potential for reducing embodied carbon in building renovations through the adoption of circular economy principles. The case study demonstrated that prioritizing reused materials and designing for disassembly can lead to substantial environmental benefits, with reused PIR insulation achieving a 94% reduction in embodied carbon compared to new materials. This underscores the importance of integrating life cycle thinking and material circularity into design strategies to meet sustainability goals.

Source

Buildings

A Life Cycle Carbon Assessment and Multi-Criteria Decision-Making Framework for Building Renovation Within the Circular Economy Context: A Case Study

journal · 2025

View source

Questions About This Research

What does the research say about circular renovation strategies can reduce embodied carbon by up to 94% through material reuse?: Incorporate life cycle thinking and circular economy principles from the outset of renovation design, prioritizing material reuse and designing for future deconstruction. Evidence: Buildings (2025).
Why does "Circular renovation strategies can reduce embodied carbon by up to 94% through material reuse." matter for design?: This insight is crucial for designers and engineers involved in the built environment, as it highlights a tangible pathway to drastically reduce the environmental impact of building renovations. By focusing on circular economy principles, projects can achieve substantial carbon reductions, aligning with global sustainability targets and potentially reducing long-term operational costs.
How can designers apply this research?: Incorporate life cycle thinking and circular economy principles from the outset of renovation design, prioritizing material reuse and designing for future deconstruction.
What were the main findings?: Circular insulation options using reused materials and designed for disassembly achieved the lowest embodied carbon emissions.. Reused PIR insulation demonstrated a 94% reduction in embodied carbon compared to new PIR boards.. The inclusion of Module D (end-of-life considerations) can alter the ranking of renovation options depending on the specific scenario.
What research method was used?: Case Study Analysis.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2025 journal from Buildings.
What should I do differently in my next project?: When specifying materials for building renovations, conduct a life cycle carbon assessment that includes embodied carbon from reused materials and design for disassembly, then use multi-criteria decision analysis to rank options based on sustainability goals and stakeholder preferences.
What are the limitations?: The impact of Module D is highly dependent on the specific end-of-life scenario, requiring careful consideration for each project.