From the high-density, top quality timber we source from sustainably managed forests, and the robust hinges we manufacture in-house, to the skill, craftsmanship, and attention to detail of our workforce, every Stira loft ladder system is produced with care and quality at its core.
Features of the Cosy + Insulated Loft Ladder
Fully Airtight (Class 4)
Highly insulated for A rated homes
Independently tested and certified*
Same Stira strength and quality
Airtightness: Tested and certified to EN 1026:2016 Windows & Doors, Air Permeability test method.
Airtightness standards specified: BS EN 12207:2016 & BS EN 1026:2016, EN 14351-1:2006+A2:2016.
U-value: When fitted to a typical size ceiling with 300mm insulation, a u-value of 0.16 W/m2K can be achieved, aligning with Part L of the building regulations and assisting towards a dwelling achieving an A rating.
Modelled using BRE Document BR443 Conventions for U-value calculations 2019 edition.
*Independently tested and certified by Building Envelope Technologies Ltd. (BET).