Work in a loft apartment in a building in the Sant Andreu district of Barcelona. The task consisted of removing old windows and doors consist of simple monolithic glass, as seen in the first picture. Instead settled some aluminum windows series sliding type A-70, 4/6/4 glass camera glass, ie a glass of 4 mm + an air chamber 6 mm + a glass of 4 mm thick on the outside. The advantage of this type of glass is thermal, about three times more efficient than single pane glass, but only about 4 euros per square meter more expensive energy expenditure amortized quickly. As we see in the second picture, once new frames hills, injected polyurethane foam inside in order to enhance their tightness and solidity. Once dry this material is cut and lined with aluminum plates or angles of the same color neutral silicone sealed with high quality. In this work, the apartment won in views, light and air tightness. Note that the most important element in a window or doorway outside is glass, since it is where there is more external contact surface. Today we have acoustic glass, low-e or Guardian Sun, which will help maximize the benefits of our window, which accompanied by a quality profiles get excellent results. In Ponsico s.c.p. we have an extensive range of profiles, glass types and finishes to choose from. In a day and a half to three workers this work was completed. For any inquiries, do not hesitate to contact us, we will respond without compromise.