Virtually Maintenance Free
Don't be fooled. Ordinary vinyl windows are often designed and built for low cost, not for value. And clad wood windows can warp, and demand painting, staining and ongoing maintenance.

Vinyl windows from CertainTeed, however, will never require any scraping, puttying or painting. You can count on decades of trouble-free, virtually maintenance-free operation. The top and bottom sashes of CertainTeed double-hung vinyl windows tilt in for easy cleaning. A soap-and-water wash is all that's required to keep these windows looking great for years.

And you get all of this at a cost that's less than custom-sized wood clad windows, making CertainTeed vinyl windows a sound investment.

Blocking Heat Loss in Winter
All objects emit energy as some form of radiation. Heat from a furnace or a person is "long-wave" radiation. Light from the sun generates "short-wave" radiation.

During the winter, you want a window that reflects long-wave radiation from your home's furnace back inside. It should also let the sun's short-wave radiation into your home. The short-wave energy is then absorbed by objects, even people, and is radiated from them as long-wave heat.

A well designed window takes full advantage of the sun's energy, keeping you and your home warm all winter long. Thermaflect® coating developed by CertainTeed maximizes the beneficial energy of the sun. The coating selectively transmits the visible light from the sun into the room, while reflecting long-wave energy from a furnace back inside.