Newly certified Manufacturers Certification criteria

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Attic staircases

Attic staircases are an often neglected part of the thermal building envelope. A certified solution makes it easy and safe to implement a thermal bridge-optimised design. The Passive House Institute provides the thermal characteristics of attic staircases to assist in balancing and recording thermal bridges.

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TypeMaterialUWClimate zonesLocation / availabilityDate certifiedOpen type

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Manufacturers

Attic staircase Timber 0.63 W/(m2K) Cool, temperate DE мар 2017 -
Attic staircase Timber 0.45 W/(m2K) Cold DE апр 2017 -
Attic staircase Timber / aluminium 0.34 W/(m2K) Arctic AT дек 2015 -
Attic staircase Timber 0.51 W/(m2K) Cool, temperate PL ное 2015 -
Attic staircase Timber 0.48 W/(m2K) Cold DE мар 2015 -