Troisdorf. In a time where energy efficiency and sustainability are becoming increasingly important, glazing with the RAL Quality Mark stands as a true seal of quality. Whether for renovation or new construction – choosing the right glass is crucial to meeting energy-saving requirements and ensuring long-lasting products.
“Quality marks offer more assurance than standard product norms. They represent quality characteristics such as airtightness, thermal and sound insulation – and that over the entire product lifetime,” explains Jochen Grönegräs, Managing Director of the Gütegemeinschaft Flachglas e.V. (GGF) based in Troisdorf.
There are RAL Quality Marks for both insulating glass units and toughened safety glass. Tested insulating glass ensures efficient thermal insulation thanks to its high-performance multi-pane construction and coatings. This leads to significant energy savings, reduced heating costs, and lower CO₂ emissions. The quality mark for toughened safety glass, known for its exceptional resistance to breakage, also guarantees the highest standards in quality and safety.
“Energy-efficient buildings are essential for a sustainable future. The RAL Quality Mark helps make this vision a reality by identifying glass products that meet the latest standards for thermal insulation and energy efficiency,” says Grönegräs.
Guaranteed Quality Throughout the Entire Lifecycle
The quality marks for flat glass go beyond mere functionality – they ensure that the glazing maintains its performance for many years. Regular inspections and third-party monitoring guarantee long-term quality, which contributes positively to the long-term value retention of buildings. Buildings equipped with high-quality insulating and safety glass benefit not only from improved energy performance but also from enhanced safety and comfort.
“The quality marks provide clear guidance in an increasingly complex market. They serve as a reliable decision-making aid for architects, planners, and homeowners when choosing the right glazing,” says Jochen Grönegräs, describing the mission of the Gütegemeinschaft Flachglas.
RAL Quality Mark Convinces Through Transparency
A key component of the RAL Quality Mark is continuous third-party monitoring. Independent testing bodies conduct regular inspections and tests to ensure that all certified glazing products meet the high quality standards. This external control creates transparency and builds trust – both for manufacturers and end users.
It ensures that only flat glass products that meet strict requirements regarding airtightness, thermal and sound insulation, and material properties are allowed to bear the quality mark.
