Ecological Building Systems has developed a new internal insulation system, Retro EcoWall A1, which can upgrade the thermal performance of existing buildings with traditional solid stone or masonry walls.
Retro EcoWall A1 is a complete internal insulation system developed by Ecological Building Systems. It combines layers of Diasen Diathonite Thermactive.037 lime and cork insulating plaster, with breathable mineral adhesives and Redstone Clima Redboard Pro, calcium silicate thermal insulation, allowing the system to achieve different U-values depending on the required performance level. Lower U-values reduce heat loss, support energy efficiency and improve overall comfort within the building.
The system is particularly well suited to taller buildings, where fire performance is critical. Every component carries an A1 non-combustible classification, which means the full internal build-up also achieves an A1 fire rating for buildings where strict fire safety requirements apply.
A central element of the system is the Redstone Clima Redboard Pro, manufactured from natural calcium silicate using lime and sand. The board can absorb up to 4.7 times its own weight in water and remains lightweight and easy to handle during installation. Its capillary-active and hygroscopic behaviour allows it to regulate moisture effectively, helping manage humidity peaks and contributing to healthier wall conditions while maintaining vapour openness and stable thermal performance. www.ecologicalbuildingsystems.com