The Passivhaus Institute has recently awarded the Designo wooden loft ladder certification for use in passive house projects. The Designo features the latest innovations in loft ladder design to perfectly balance aesthetics with performance. It offers excellent thermal efficiency (U value 0.60 W/m2K) and an airtight seal (class 4 certified) thanks to a highly insulated trapdoor with 6-point locking mechanism.
The Designo also benefits high strength performance; rated to 180kg per tread with an overall load of 420kg/m2. This makes it ideal more demanding residential projects, as well as some commercial/industrial applications.
Furthermore, the Designo features concealed hinges and a discrete, recessed operating latch. The result is a high quality, seamless finish.