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. Simply clean the windows periodically with soap and water. 

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.

Easy operation -- constantly
Ordinary balance systems, like spiral or block-and tackle balances, are based on simple wire-spiral springs. You've pulled on such springs for fun -- the farther you stretch them, the harder they pull back. That's the changing tension you feel when you open and close most windows. 
CertainTeed's balance system is different. It's based on a 3/4" wide stainless steel coil that applies a constant force. The tension never changes. So sashes lift and lower easily ... and stay where you put them. They never sag. They never need adjusting.

Industry-leading thermal efficiency
CertainTeed designed its vinyl windows in the 1970s in response to the energy crisis. Continuous improvements have kept our vinyl windows on the leading edge of technology. All of our vinyl windows have: 

• honeycomb construction in the frame and sash, which provides insulating "dead space"
  
• double-pane glass with a low-conductance spacer that doubles the efficiency of old single-pane glass
  
• exclusive Thermaflect® glass, which selects which wavelengths of light and heat should enter your home.