This site provides informative articles and actionable guides to share our knowledge on achieving energy and water independence, including the use of natural insulation to drive down energy costs. Ultimately, our goal is to help you create a low-maintenance, cost-effective home.
Backed by a small team of contributors and ECS—an energy and natural insulation consultancy—our advice comes from real-world experience, not sales pitches. We only recommend systems we actively install and trust, such as Victron, Steico, Diasen, and hemp.
To keep our skills sharp, we take on select restoration projects and run our own living show house here in Western Asturias, where we put our experience into practice and test new ideas and products. Meanwhile, our trusted partner, BioReforma S.L., manages comprehensive restorations and natural spray insulation in the south—which is how ECS first began.
Natural Insulation Calculator
Find the right breathable insulation for your project — sized to Spain's 2026 CTE building standards.
Wall Assembly
Climate Zone Detail
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.