Proper handling and regular cleaning certainly affects the life of your carpentry. In order to protect the smooth surface of top quality profiles from various external environment, their regular maintenance is required.
Occasionally, once in 3 months, you should rub the mentioned carpentry, not with some special chemical products, but with ordinary warm water, a sponge and a pH-neutral cleaning agent. Strictly avoid sharp abrasives, products that contains thinners, acetone and similar ingredients. After that, wipe with a dry cloth. To maintain the glass on PVC joinery, a leather cloth is enough, a larger amount of water with only a small amount of glass cleaner. As with hardware, avoid aggressive detergents and cleaners. That would be the whole process of maintaining PVC and ALU carpentry.

HOW NEW CARPENTRY REPAYS OLD
You must have found yourself in a situation where you