Eco-friendly coatings play a growing role in reducing emissions in construction. They help cut harmful VOCs, lower the carbon footprint of materials, and extend the life of built assets. This article explores how eco-friendly coatings help reduce emissions in construction, supported by advancements in green chemistry, water-based systems, and recycled materials.
What Are Eco-Friendly Coatings?
Eco-friendly coatings are protective systems designed to reduce environmental impact by lowering VOC emissions, using sustainable raw materials, and improving durability. These coatings support emission reduction in construction by limiting off-gassing, reducing maintenance cycles, and helping keep embodied carbon locked in built assets for longer.
The Need for Eco-Friendly Coatings
Growing pressure to reduce carbon emissions places coatings at the centre of more sustainable construction practices. Traditional coatings often contain solvents and VOCs that contribute to air pollution and add to the carbon footprint of large assets.
Long-term durability also remains a key concern. Frequent maintenance leads to repeated emissions from new materials, transport, equipment use, and labour. Remedy Asset Protection highlights this problem through its work across the built environment and durability sectors, where many structures degrade earlier than expected due to poor coating performance. (Reference: Rigby, sustainability of structures and net-zero pathways )
Why durability matters for emissions
Durable coatings prevent corrosion, extend asset life, and reduce the need for interventions—each intervention carries a carbon cost. RemedyAP’s Durability Assurance service ensures coating systems perform as intended and achieve maximum service life.
Reducing whole-of-life emissions
Reducing operational and embodied carbon is essential for modern infrastructure. Eco-friendly coatings support both by:
- Lowering the need for future repainting
- Reducing solvent use
- Supporting sustainable material specifications
- Improving asset resilience in harsh environments
Green Chemistry in the Coatings Industry
Green chemistry drives many innovations in sustainable coating technologies. Manufacturers now create high-performance products using alternative raw materials and less energy-intensive processes.
What green chemistry aims to achieve
Green chemistry focuses on:
- Reducing hazardous substances in formulations
- Replacing petrochemical solvents
- Using bio-based materials
- Lowering VOC levels
- Improving production efficiency
These developments align with RemedyAP’s support for sustainable design and specification through their Sustainability service division.
Bio-based and recycled formulations
Recent advances include:
- Resins derived from soybean oil, linseed oil, and other bio-based feedstocks
- Acrylic alkyds produced using recycled PET plastics
- Water-borne alkyds produced with reduced VOC levels
- Reactive diluents made from fatty acid methyl esters
These alternatives deliver strong performance while reducing emissions at every stage of the coating lifecycle.
Low-VOC and Water-Based Coatings as Real Alternatives
Low-VOC coatings remain central to reducing harmful emissions. VOCs contribute to ozone formation, poor indoor air quality, and environmental pollution.
(Supported by analysis in Rigby’s plenary paper )
How low-VOC coatings reduce emissions
Low-VOC systems:
- Off-gas far fewer pollutants
- Reduce carbon footprint during application
- Improve worker health
- Support sustainable construction certifications
- Lower regulatory risk on sensitive sites
Water-based coatings
Modern water-based protective coatings have advanced significantly. They now provide:
- Strong adhesion
- Chemical resistance
- Increased UV stability
- Lower odour
- Minimal hazardous waste
On the concrete and steel side, water-based epoxies and polyurethanes continue to evolve. These are especially valuable in asset preservation programs managed under Condition Assessment and coating verification services.
Recycled Materials in Coating Production
Coatings made from recycled materials reduce reliance on virgin resources and support circular economy goals.
Examples of recycled content in coatings
Coatings may now include:
- Recycled plastics (PET) used in alkyd resins
- Recovered solvents processed into new formulations
- Recycled pigments or mineral fillers
- Waste oils converted into modified polyurethanes
These innovations cut embedded emissions and reduce landfill waste while maintaining coating performance.
How recycled materials support net-zero strategies
Using recycled raw materials supports:
- Reduced demand for petrochemicals
- Lower emissions during manufacturing
- Less waste at end-of-life
- Improved sustainability ratings for new infrastructure
This aligns closely with the principles used in RemedyAP’s guidance on the built environment, where lower-carbon materials and coatings support better long-term outcomes.
How Eco-Friendly Coatings Help Reduce Emissions in Construction
Eco-friendly coatings support emissions reduction in several ways, combining material science with long-term asset durability.
1. Reduced VOC emissions
Low-VOC and water-based systems release fewer pollutants into the atmosphere. This benefits both workers and local communities.
2. Lower carbon footprint of materials
Bio-based and recycled formulations require less energy to produce and generate fewer greenhouse gas emissions.
3. Fewer maintenance cycles
Longer-lasting coatings keep embodied carbon locked in structures for longer. Reduced maintenance means less equipment use, less transport, and fewer coating materials over time.
4. Improved durability and resilience
Coatings prevent corrosion, chemical damage, and environmental degradation. This extends service life and reduces unnecessary replacement.
5. Better alignment with lifecycle assessments (LCAs)
As industry moves toward whole-of-life carbon reporting, eco-friendly coatings support sustainable specifications from design through operation.
Innovations Driving Sustainable Coatings
Innovation continues to expand the capabilities of sustainable coating systems.
Nanotechnology and advanced additives
Nanotechnology improves:
- UV protection
- Abrasion resistance
- Self-healing capability
- Corrosion protection
It also allows lower film builds while maintaining protective performance, reducing material consumption.
Powder coatings
Powder coatings produce:
- Zero VOCs
- Minimal waste
- Highly durable finishes
- Reduced overspray
- No solvent clean-up
They are now common in industrial fabrication and asset protection.
Fouling-release marine coatings
Emerging eco-friendly marine formulations use:
- Low-surface-energy polymers
- Non-accumulating biocides
- Advanced silicone-based systems
These alternatives reduce environmental harm and align with international regulations.
The Role of Coatings in Long-Term Sustainability
Eco-friendly coatings contribute to emission reduction in construction by preserving assets and reducing the carbon cost of replacement.
Justin Rigby’s plenary work emphasises that protecting built assets keeps embodied carbon locked in the structure, reducing future demand for steel, concrete, energy, and transport. (Reference: Rigby sustainability paper )
Why this matters
A coating that lasts 20–30 years generates a fraction of the emissions associated with full replacement of structural steel or concrete elements.
Adaptive reuse and longevity
Coatings extend the life of assets, supporting:
- Adaptive reuse
- Reduced demolition waste
- Lower carbon outlays for new construction
This becomes critical as net-zero strategies rely on retaining embodied carbon in existing infrastructure.
Supporting Better Coating Choices in Practice
Specifiers, engineers, and asset owners play a direct role in reducing emissions. Good coating selection, verification, and assessment ensures the right system is used and performs for its intended service life.
Where RemedyAP supports this process:
- Sustainability: assisting teams in sustainable material and coating choices.
- Built Environment: helping improve design, durability and lifecycle performance.
- Condition Assessment: identifying coating failures early and reducing carbon-intensive replacements.
- Durability Assurance: ensuring systems are applied correctly to maximise service life.
Integrating these services supports a holistic, low-carbon approach across all stages of construction and asset management.
Conclusion
Eco-friendly coatings provide a powerful pathway for reducing emissions in construction. Through lower VOCs, recycled materials, green chemistry, and longer service life, they reduce environmental impact while improving asset performance. When combined with effective durability strategies and proper specification, these coatings help keep embodied carbon locked in the built environment and support Australia’s broader sustainability goals.
To explore how better coating selection or durability strategies can support your projects, you can learn more through RemedyAP’s services for Sustainability, Built Environment, Condition Assessment, and Durability Assurance.