Vinyl window technology came to the United States in the late 1960's. The original vinyl windows were developed and brought to a high level of quality in Europe in the 1950's.
Vinyl windows have demonstrated several significant points of undisputed superiority. For example, unlike many materials, vinyl does not swell and shrink when exposed to extreme moisture conditions. Vinyl windows operate smoothly in all weather conditions. Vinyl has high insulating qualities when compared to other window materials. Vinyl does not rust, pit or corrode. Vinyl windows never need painting and are easily cleaned with a damp cloth and some mild detergent. Vinyl is comfortable to the touch in either sub-zero or tropical weather conditions.
Vinyl's self-lubricating properties enhance its ability to slide. In addition, vinyl does not warp, twist, swell or otherwise distort its shape, so it remains easy to operate.