Newly certified Manufacturers Certification criteria

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Attic staircases

Attic staircases are an often-neglected part of a building's thermal 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 the balancing and recording of 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 Μαρ 2017 -
Attic staircase Timber 0.45 W/(m2K) Cold DE Απρ 2017 -
Attic staircase Timber / aluminium 0.34 W/(m2K) Arctic AT Δεκ 2015 -
Attic staircase Timber 0.51 W/(m2K) Cool, temperate PL Νοε 2015 -
Attic staircase Timber 0.48 W/(m2K) Cold DE Μαρ 2015 -