Glas Janssen GmbH

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Last year, we had a large project to undertake. All the windows, along with the roller shutters and insect screens, needed to be replaced in our two-story detached house. In total, this involved 24 windows, including custom-made windows several meters high in the stairwell. We contacted several companies and asked them to schedule an on-site appointment to discuss individual plans and options for our house. Almost all the companies showed great interest and commitment. Most came promptly with at least two employees to take measurements. They all brought numerous samples so we could decide on t

On April 12-13, 2025, I had new windows installed throughout my apartment by Glas Janssen. Various employees were on-site on both days. The work was completed quickly and professionally! The employees/installers were very friendly, completed the work promptly, and were happy to answer any questions I had. A visibly and audibly positive working atmosphere prevailed among everyone! The construction site was completed on time and left clean. In short, I'm extremely satisfied with both the end result and the process by which it was achieved. Simply fantastic guys! Thank you very much. Keep up the

We received new glass doors on May 20, 2025. The installers were punctual, friendly, and very conscientious in their work. I would recommend Glas Janssen without hesitation and will certainly use their services again if needed.

First, we quickly got an appointment to repair a glass door, and the repair was carried out promptly and to our complete satisfaction. Afterwards, an employee went to great lengths to find a suitable seal for our (old) shower – even though the shower wasn't installed by Janssen. Highly recommended!