Why vertical greening is more than just a green trend
The greening of building facades has evolved from a mere aesthetic choice to a key element of sustainable architecture. Green facades significantly improve the local microclimate, act as natural air conditioners, reduce the urban heat island effect, absorb noise and promote biodiversity. But how can we ensure that green facades are not only beautiful in the short term, but also effective in the long run? The answer lies in clear quality standards – and this is exactly where the RAL Quality Association for Green Facades comes in.
The RAL Quality Mark – A Reliable Promise of Excellence
The RAL Quality Mark for Green Facades (RAL-GZ 580) ensures that greening systems are professionally planned, implemented and maintained. Companies that carry this seal commit to the highest standards throughout the entire value chain.
What makes the RAL Quality Mark unique?
- Reliable standards: The criteria are continuously developed to reflect the latest technical innovations and scientific research for truly sustainable greening.
- Certified quality: The RAL Quality Mark complies with EU procurement directives and can serve as a key requirement in public tenders.
- Ongoing quality assurance: Independent inspections guarantee that all requirements are met and regularly monitored.
From planning to maintenance – Why quality matters
A successful vertical greening project starts long before installation. RAL-certified companies follow a holistic approach based on these core principles:
- Project-specific planning: Every greening solution is tailored to meet the unique needs of the building and location.
- Professional installation: Long-term success depends on precise installation and well-designed irrigation systems.
- Sustainable maintenance: Regular care and upkeep are essential to preserve the health and appearance of the facade over time.
RAL Quality Mark as a decision-making tool for large-scale projects
Especially in large-scale construction projects, working with experienced partners is essential. The RAL Quality Mark offers developers, planners and investors a reliable guide to make informed decisions. Quality pays off in the long term – ensuring durability and contributing meaningfully to urban sustainability.
Top-level involvement – Experts who set the standard
We are proud that our experts play a key role in the RAL Quality Association for Green Facades.
- Sonja Quick, a founding member of the quality committee, has been instrumental in shaping and safeguarding the association’s guidelines.
- Michael Dautzenberg, our specialist in green building systems, joined the quality committee on March 20, 2025. Alongside Sonja Quick, he will actively contribute to the ongoing development of the standards.
Through this involvement, we contribute our expertise and also serve as direct points of contact for all questions relating to certified vertical greening systems.
With the RAL Quality Mark, we stand for excellence.
As a company, we guarantee that every green facade is professionally implemented and regularly maintained – a quality promise that holds true today and tomorrow.
Contact persons can be found here: https://www.leonhards.de/team/
Source: https://www.ral-vertikalbegruenung.de/
Photos: Alex Mahling; Timo Lutz – Team for industrial photography
Author: Sonja Quick & Janine Ballein