Vinyl windows first showed up in the U.S. in the 1960s, but they didn't gain widespread acceptance until the 1980s. Recently, vinyl overtook wood as the most common window material in the U.S. Vinyl windows now account for about 40% of total window sales and around 60% of the replacement market.
Some products combine wood and vinyl, but all-vinyl windows have sash and frames made from hollow pieces of polyvinyl chloride (PVC). Glazing and hardware vary by brand and model but are comparable to what you'll find on wood and metal units.
to continue reading