Enduits isolants naturels : la bonne solution pour les façades anciennes ?

During his presentation at the webinar organized by the Paris Climate Agency, Daniel Sirène, director of DSD Rénov, presented facade renovation solutions using natural insulating plasters. This presentation was part of the webinar "Pro Solutions | Natural Insulating Plasters," organized on April 21, 2026, by the Paris Climate Agency and moderated by Sasha Costil, Project Manager at CoachCopro for professionals. Do you really have to choose between renovating your facade and improving the thermal comfort of your building? Daniel Sirène answers this question after five years of field experience and numerous thermal correction plastering projects. His central argument: natural insulating plaster is not an added layer of insulation. It's the renovation itself—with integrated thermal intelligence. Same construction site, same scaffolding, same budget (or almost). The presentation will cover: 🔸Why traditional masonry (ashlar, millstone, brick, timber framing) is breathable, and what happens when its breathability is blocked with cement or a thermal insulation composite system (TEC). 🔸Insulating plaster vs. external thermal insulation composite panels (ETICS): two fundamentally different approaches, not to be confused. 🔸The case of timber framing: why is lime-cork plaster often the only possible solution? 🔸The complete, step-by-step application process: chipping, scratch coat, galvanized wire mesh, base coat, reinforcing mesh, and lime finish. 🔸Lime-pozzolan for foundations, lime-cork for facades: the right product at the right height. 🔸Technical performance, regulatory framework (DTU 26.1, CSTB opinion), and ten-year warranty. 🔸Comparative pricing and potential eligibility for MaPrimeRénov' grants (Supported Pathway) This presentation was followed by a Q&A session with webinar participants. The full video of the event, including the presentation by Fabien Gleizes (Compagnie des Chaux et Mortiers), is available on the @agenceparisclimat YouTube channel. 📌 Learn more about DSD Rénov: www.dsdrenov.com