Doors are an essential part of any home. First of all, they guard the proverbial four angles. In order to fulfill their function, they should, first of all, have aesthetic values and match the decor of the house. Secondly, they should have appropriate dimensions. The standard door width is 90 centimetres, but the general width is 15 centimetres more; the standard height is 201 centimetres, the general width is 7 centimetres more. The overall height dimensions in addition to the door allow the door frame to be mounted freely. The U-value is approximately 1 to 2 W/(m2*K). Acoustic insulation – approx. 30 decibels. These coefficients always amount to more in the external door, i.e. the entrance door to the house, and less in the internal door, i.e. leading to specific rooms in the building. Moreover, in contrast to internal doors, the external doors are burglar-proof.
Windows are another important element of every house (see windows). They provide light and allow ventilation of rooms. They consist of glass and frames: wooden, plastic or aluminum. Wooden windows fit best in tenement houses and old buildings, plastic windows work well in blocks of flats and new houses, and aluminium windows work best in galleries and office buildings. Each type of window is characterized by its strength. As far as ventilation gravity is concerned, all of them have proper tightness and proper unsealing. While in the case of damage to a wooden or plastic window it is enough to replace the glass, in the case of damage to an aluminum window it is necessary to replace the glass with the frame.
The roller blinds must not be forgotten either. Internal blinds protect against light and external blinds protect against sound and burglary. Among the internal roller blinds there are: free-hanging (unrolling fabric glued to a tube mounted on the ceiling), cassette (unrolling fabric hidden in a cassette mounted in a window frame), pleated (fabric fixed to the frame, which can be freely pulled up or down), Roman (fabrics mounted on a string or bead mechanism, during rolling and unrolling fold effectively fold). The external roller shutters include: on-window (installation on the window frame, RKS (installation in the window lintel), surface (installation on the wall, in the window recess), flush (installation in the lintel, in the lintel recess).