Building a Sustainable Future with the EcoCocon Wall System in Passive Homes

When it comes to creating a comfortable, energy-efficient home, every material choice matters. That’s why the EcoCocon wall system is becoming a game-changer in the world of passive house construction.

This eco-friendly system, made from natural straw, provides exceptional insulation and airtightness—key components of a true passive house. It helps keep your home warm in winter and cool in summer, all while reducing your carbon footprint.

Fire resistant? Contrary to popular belief, straw and wood buildings resist fire very well. The straw in the EcoCocon panels is compressed at a density of 110kg/m³ (6.9 Ib/ft3), leaving no space for oxygen that would fuel the fire. Straw has a high content of silica, a natural fire retardant. When burning, both materials create a charcoal insulation layer on the surface that protects them from flames. Combined with clay plaster, the panels are rated to withstand two hours of intense fire according to the REI 120 and REIef120 certifications, meeting strict fire safety requirements. In fact, after two hours of over 1000°C (1832°F) on one side, the other side showed an average temperature increase of only 17.7°C (63.9°F).

The plumbing and electrical installation (pic above) fits snuggly into the straw panels

The EcoCocon wall system not only offers top-tier energy efficiency but also contributes to a healthier living environment with renewable, non-toxic materials. And while some people worry about rodents, rest assured, in a Passive House, the building envelope is meticulously sealed, so there’s no opportunity for pests to penetrate the exterior. With proper installation, these walls remain protected and continue to perform at their best.

With the right installation and sealing, the EcoCocon wall system offers a sustainable, durable, and beautiful option for building homes that are as eco-friendly as they are comfortable.