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Measures for resource-efficient production


Black and white environmental certification logos arranged side by side: PEFC on the left with stylised trees and the text 'Förderung nachhaltiger Waldwirtschaft' and www.pefc.de; ECO Institut in the middle with the words 'eco institut', 'TESTED PRODUCT' and test ID; FSC on the right with stylised tree outline, the text 'Das Zeichen für verantwortungsvolle Waldwirtschaft' and certificate number.

Production in accordance with certified standards

GARANT is committed to continuously optimising its production processes. Our doors are produced to the highest standards of precision and quality using modern, computer-controlled machines. With regard to the raw material we use – wood – we hold Chain of Custody certifications from FSC® and PEFC, which guarantee responsible forest management. Furthermore, our products are certified according to the eco-INSTITUT, which requires controls for emissions and substances that may pose a health risk.

Energy policy

We are ISO 50001-certified. This standard represents a systematic approach to energy management within the company. To hold this certificate, it is necessary to continuously reduce energy costs and CO₂ emissions. This is a challenge for companies, one which we take on new every year. “The company uses energy efficiently, both on a large and small scale,” explains Marco Müller, Head of Central Development/Design. “Our annual energy targets are precisely defined and recorded using automated tracking. This enables us to optimise our processes on an ongoing basis.”  

By quality to a long service life

Thanks to their high quality, our doors and door frames last for 20 to 30 years. In private homes, the service life is sometimes short. New interior design trends play a major role here. And people like a bit of variety in their lives. We are always at the forefront of trends and innovations. Through standardization of our entire product range, doors can be swapped out to suit individual tastes, whilst retaining the same casing. In this way, we strike a balance between timelessness and individuality, ensuring that doors fit perfectly with the client's personal taste. 


Aerial view of a dense coniferous forest with a uniformly green canopy, isolated clear areas and visible forest floor between the trees
Several wind turbines on wide green fields; low bushes in the foreground, row of trees on the horizon and bright sky with sunlight