Distribution

Structures

Steico & Diasen Wall Insulation

Restricted-Access Excavation

Land rehabilitation and clearing

Mobile Timber Milling & Wood Salvage

Western Asturias: Full-Scale Restoration

We limit our commissions to focus exclusively on uncompromising, high-performance restorations of historic ruins. We partner with clients who understand that doing things properly leaves zero room for shortcuts.

We do the graft ourselves—covering groundworks, structural rebuilds, breathable insulation, lime plastering, plumbing, and electrics. When needed, we tow our mobile sawmill to site for custom timber milling. Beyond the walls, we provide complete land rehabilitation and restricted-access tree felling.

Nationwide: Specialist Services & Supply

While our full-scale builds are rooted in the north, we support projects across Spain:

  • National Distribution: We supply natural, vapour-permeable insulation (Steico, Diasen, Hemp) and commercial-grade Victron off-grid power systems, backed by years of hands-on installation experience.

Cádiz & Andalucía: Southern Operations

Our southern operations are managed in close partnership with BioReforma S.L. This collaboration ensures clients in Cádiz and across Andalucía receive the exact same rigorous standard of natural, vapour-permeable insulation installation from a trusted regional specialist.

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.

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Effective traditional methods employed in preventing rising damp

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