Crafted from dense, sustainably sourced timber and finished with precision-made, in-house hinges, the Stira COSY is a premium loft ladder system built for lasting performance. Designed for A-rated energy-efficient homes, it features exceptional insulation and airtight sealing-making it ideal for frequent attic access in modern properties. Key Features: Fully Airtight (Class 4) – Minimises heat loss and air leakage High Thermal Performance – Achieves a U-value of 0.16 W/m²K when installed correctly Built for Energy Efficiency – Ideal for new builds or retrofits targeting EPC A ratings Certified Quality – Independently tested by Building Envelope Technologies (BET) Trusted Stira Build – Engineered with robust materials and proven design Floor To Ceiling – 2400mm – 2800mm Certified Standards: Airtight to EN 1026:2016 Complies with BS EN 12207:2016 & EN 14351-1:2006 A2:2016 U-value modelled to BR443 (2019) standards Lead Time: Made to order – delivery in up to 5 weeks
