I’m the building manager of the Saray apartment located in Caddebostan. We chose light and durable materials for our roof because of the tiles that had broken before due to weather conditions and earthquake load. We have decided on Onduline’s products after doing a research about quality products.After the meetings with Turanlı Çatı and İzolasyon LTD. ŞTİ., we asked them the application of 2 tones green materials.We chose BITULINE which is a light,unbreakable,easy to use and of a high quality material. I’m happy that the material has a plain image and and it’s application is quick and the result is perfect.