• Maintenance should be done by averaging four times a year or more if the building is located in a coastal area or in an area which is exposed to the atmosphere of high pollutant.
• Always start from the top of the frame downwards.
• Remove the dust with a brush with soft nylon fiber (simple broom).
• Wash with PH-neutral detergent or just water and wiped with a soft clean cloth. 
• Do not use launchers pressure liquid detergent or other similar systems as they wear the surface. 
• Prefer to clean the painted windows in hours with no sunlight. 
• For better energy efficiency of the frame, it is necessary every two years or so to keep a check by experienced professionals on specific parts of the frame that affect performance.