The appearance of the house is largely determined by the roof and windows. Many useful ideas for the choice of materials and construction technologies can be found on the website Eurovivat. Com. The adopted style determines the choice of design and materials for the main elements of the structure. Modern style involves strict roof lines, modern roof materials — metal, metal tiles, etc. p. This style usually involves large glazed surfaces. The correct selection of double -glazed windows and window profiles for heat -shielding properties is important. The sliding window and door structures made of metal -plastic or metal profile, as well as the internal staircases made of metal and glass, fit into such an interior.