Land rehabilitation and clearing

Highly insulated structures

Solid Wall Natural Insulation for Acoustic, Thermal, and Moisture Control

Steico Insulation

managed rehabilitation

Hemp block and board Insulation

Welcome to ECS

Based in Western Asturias, ECS is a historic building restoration consultancy and nationwide distributor specialising in complete off-grid living. As well as restoring beautiful properties for clients, we hold a small portfolio of historic homes for sale. Each comes with a full restoration contract to transform the building and land into a highly insulated, energy- and water-independent retreat.

Articles

ECS Land Rehabilitation

Just bought a property in Western Asturias? ECS provides professional land clearing, flail mowing, and excavation for historic properties to help you start your renovation.

Heating in Spain

Heating in Spain

Understanding Carbon Fleece Heating and Phase-Change Hot Water

Understanding Carbon Fleece Heating and Phase-Change Hot Water

The Ultimate Eco-Envelope: Sprayed Hemp, Cork Upgrades, and Clay Finishes

The Ultimate Eco-Envelope: Sprayed Hemp, Cork Upgrades, and Clay Finishes

The Breathable Building Revolution: Why Steico, Diathonite, and Hemp are Winning

The Breathable Building Revolution

The “Lazy Architect” Trap

The “Lazy Architect” Trap

Europe’s property market is like a landlord with a hangover

Europe’s property market is like a landlord with a hangover

From Charming Ruins to Energy Fails: Why Spain’s Old Houses Are Becoming Unsellable Bricks

From Charming Ruins to Energy Fails: Why Spain’s Old Houses Are Becoming Unsellable Bricks

Steico Insulation

Natural Insulation

Off-Grid Eco House Build: Active Fire Defence & Natural Envelope

Off-Grid Eco House Build: Active Fire Defence & Natural Envelope

Construction Sector Warns Sánchez: 56% of Firms Slow Down Amid “Perfect Storm”

Construction Sector Crisis: Why Projects Are Slowing in 2026

The Reality of Off-Grid Living: Costs & Setup | ECS

The Reality of Off-Grid Living: Costs & Setup | ECS

Steve Keen on Spain’s Climate, Housing & Debt Crisis | ECS

Prof. Steve Keen warns of a dual crisis reshaping Spain: stagnant private debt driving out locals and an ecological “war economy” fuelled by eucalyptus and drought.

Eucalyptus in Spain

Replacing eucalyptus, yield stacking, native forests Spain, silvopasture, ecological restoration, green desert.

Crypto Hangover & Tech IPOs: Spain’s 2026 Property Market

The 2026 tech IPO boom and crypto hangover are shifting Spanish real estate trends. Learn why investors are retreating to build self-sufficient, off-grid homes.

Natural Insulated Lime & Hemp Renders | ECS

With 30 years of experience, ECS provides premium breathable natural renders. Discover our polished Diasen cork finishes and new proprietary hemp blends.

Restoring an Asturian ruin

Asturian urban law, building amnesty Asturias, off-grid restoration Spain, rural grants Spain, PREE 5000 Asturias, traditional stone restoration.

Spain’s Migration Shift: Why Professionals Are Moving to Asturias

Spain’s south-to-north domestic migration shift. Learn why professionals are relocating to smaller Asturian concejos and rural villages.

EU Solar Inverter Ban: Will Your Energy Bills Increase?

Chinese solar inverters Europe, solar energy cybersecurity, will solar inverter ban increase energy bills, European solar manufacturers

Why is Spain Still Using Non-Breathable Insulation?

Why Spanish architects still favour synthetic foam over breathable insulation. Learn about damp, CTE regulations, and the shift to sustainable building in Spain.

Under the Skin: An Exclusive Look at Our Historic Retrofit

Under the Skin: An Exclusive Look at Our Historic Retrofit

The “Free” Insulation Trap: Why Modern Grants Can Ruin Historic Spanish Homes

The “Free” Insulation Trap

From Damp Walls to Dry Homes: Unmasking the True Causes of Damp

From Damp Walls to Dry Homes: Unmasking the True Causes of Damp

The “Lazy Architect” Trap

The “Lazy Architect” Trap

Dry underfloor heating system

ceramic shock

Wall Therapy: Diathonite and Wood Fibre Make Old Masonry…

Wall Therapy: Diathonite and Wood Fibre Make Old Masonry..

The Ultimate Eco-Envelope: Sprayed Hemp, Cork Upgrades, and Clay Finishes

The Ultimate Eco-Envelope: Sprayed Hemp, Cork Upgrades, and Clay Finishes

The Main Factors Behind Rising Damp: Unveiling the Culprits

Discover the hidden causes of rising damp with this insightful article.

Natural insulating renders for solid stone walls

Discover the benefits of natural insulating renders for solid stone walls in this informative article.

Diasen: Natural Plasters Explained

Discover the beauty and benefits of Diasen natural plasters in this comprehensive guide.

The “Ghosting” Problem: How We Found 736 Responsive Architects in Spain (So You Don’t Have To)

The “Ghosting” Problem: How We Found 736 Responsive Architects in Spain (So You Don’t Have To)

The New Reality: Energy Status = Rental License

The New Reality: Energy Status = Rental License

Steico Insulation

Natural Insulation

Solar Energy in Asturias: Is an Off-Grid System Worth It?

Can 4 solar panels power an Asturias home? Learn why high-performance arrays and 16kWh batteries are the secrets to energy independence in Northern Spain.

Restoration & NZEB Consultancy

Bridging heritage preservation with Net Zero strategies.

Natural Insulation

Independent supplier of natural, vapour-permeable insulation, including Steico, von Hanf, Rockwool, and Diasen.

Energy Systems

Solar power and battery storage solutions for both grid-tied and off-grid properties.

Water Heating

KRONOTERM Ultra-Efficient Hot Water Heat Pumps.

Climate Control

E-NERGY CARBON advanced, low-energy heating solutions for year-round comfort.

Managed Restorations

Full project delivery through our trusted partners.

Specialist Groundworks

Cellar excavation and land rehabilitation for restricted access sites.

Sauna & Spas

Design and installation of bespoke, energy-efficient saunas and spars.

Property Health Check

Comprehensive pre-purchase health checks for electrical & insulation systems.

ESaaS

Off-grid power systems for your property and trade the surplus back to the network

ECS Insulation Calculator — Spain CTE 2026
ECS · Eco Construction Spain

Natural Insulation Calculator

Find the right breathable insulation for your project — sized to Spain's 2026 CTE building standards.

Spain CTE 2026 Compliant
Where is your project?
We'll determine your CTE climate zone and required U-value targets automatically.
What are you insulating?
Select the wall or structure type. This determines which CTE U-value limit applies.
Choose your insulation
ECS stocks natural, vapour-permeable materials from Steico, von Hanf, Rockwool and Diasen.
Add a finish or substrate layer (optional)
A cork render, clay plaster or lime coat adds thermal mass and controls moisture. Recommended for historic buildings.
Your Insulation Performance

Wall Assembly

Climate Zone Detail

Ready to specify your materials?

ECS ships natural insulation nationwide from Barcelona and Asturias. Get a quote or ask a question.

This tool is for estimation purposes only. Calculations are based on generic material properties and steady-state physics. It does not account for thermal bridges, mortar joints, or site-specific conditions. Compliance with the Spanish Technical Building Code (CTE) requires a certified project by a licensed Architect.