Newly certified Manufacturers Certification criteria

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Roof windows

Roof windows are among the most thermally demanding elements of the building envelope – their horizontal or steeply pitched position significantly increases heat loss and condensation risk compared to vertical windows. Thermally optimized frame constructions, high-performance insulated glazing and warm-edge spacers minimize heat loss and thermal bridges – ensuring high interior surface temperatures, condensation-free performance and meeting of certified Passive House criteria.

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