Filstone Sustainability. Responsible management of natural stone
We operate with resource efficiency, safety and compliance. Our approach combines water recirculation, energy optimisation and progressive rehabilitation, ensuring continuity of supply and respect for the territory.
With exclusive lines such as Stork by Filstone, we enhance the authenticity of limestone, and Alpalhão SPI granite supports reference projects in Portugal and abroad.
Commitments
- Minimise water use and maximise recirculation;
- Reduce energy consumption and favour renewable sources;
- Valorise by-products, reducing waste to landfill;
- Promote safe work and qualified teams;
- Fulfil legal and regulatory requirements with transparency.
Environment & Safety
- Prevention and operational control;
- Monitoring and performance improvement;
- Training and safety awareness for teams.
Key indicators
Water
Closed-loop systems for the reuse of wastewater, in compliance with legal and environmental requirements.
Dust & Noise
Irrigation systems, protective natural barriers, and periodic monitoring of levels.
Natural Heritage
Phased extraction with environmental rehabilitation of slopes and soils throughout the project lifecycle.
Standards & Audits
Active licences, with continuous monitoring and scheduled internal and external audits.
Water
Energy
Circular economy & by-products
By-products re-introduced into the value chain, with traceability and defined criteria.
Overburden
Valorised in embankments and suitable local applications.
Fine slurry
Integrated into controlled applications where technically viable.
Reuse
Packaging and protections designed for reuse and recycling.
Certifications
Casa de Pedra
In the Casa de Pedra, natural stone combines with natural insulation — cork and mineral wool. Cork is carbon-negative, renewable and locally sourced, contributing to a low-impact construction system.
Historic limestone buildings prove the availability and longevity of the material, requiring less frequent maintenance than reinforced concrete (which needs interventions to address carbonation and rebar corrosion; typical service life of more than100 years with planned maintenance).
Solid stone does not oxidise or lose structural capacity under normal conditions.
Visit our quarries
Book a technical visit to our quarries: indicate the preferred date, objective, number of participants and any safety requirements.
