The guarantee of quality of the roof windows FENESTRA is not only the selection of high-quality materials, use of modern technology, but also consistent checks in the course of production. The results are recorded in the identification label on each product. This system ensures the declared quality and enables us to provide an extremely long guarantee – 15 years.

If installed with THERMOS insulation set, the THERMICAL series of FENESTRA roof windows is provided with a 15 year guarantee.

The windows of the EXCELLENT range have 15 year guarantee. The extremely long guarantee is the result of the combination of more than 17 years of experience with roof windows manufacturing and the latest materials and technologies. The windows of the POPULAR range have 5 year guarantee.

In 2004, all products by FENESTRA střešní okna, s.r.o. were certified with the European CE certification which gave us the chance to sell in the European Union.

Roof windows FENESTRA are produced from materials that are environmentally friendly and biologically harmless. The Senior Hygiene Officer has issued the clean bill of health for our products.

FENESTRA střešní okna, s.r.o. has signed an agreement of associated compliance with the company EKO-KOM, a.s. and participates in the EKO-KOM System of Associated Compliance under client number EK-F00040230.