uPVC Windows

uPVC windows are simply a newer and stronger version of PVC, which is the generic name for the main material used in vinyl windows. Today, most credible window manufacturers now use uPVC for their vinyl windows. The key to buying a good vinyl window is in knowing how the vinyl was extruded and how the manufacturer filled the frame (if at all) during the manufacturing process.

“uPVC cost depend on the quality of the production; the greater the number of chambers and how thick the chamber walls during the extrusion process, the higher the production cost. Obviously, there is a balance between strength and cost – and yet the material is all called the same.”

The Basics Behind uPVC Windows

uPVC is unplasticized pvc – in other words the PVC has not been softened. Plasticized PVC has been softened and is therefore flexible, making it ideal for garden hoses, dashboards, etc. When it comes to window frames, you want very little flexibility because, over time, this leads to warping and/or sagging. Once this happens, all kinds of problems occur in home windows; windows that do not proper slide, locking mechanisms that jamb, hardware that doesn’t work properly or align correctly.

uPVC Windows Cost

The following price ranges are installed prices – material and labor together. uPVC windows cost are based on production cost and markup, as well as installation prices.

Total Entry Level Costs: $250 – $350

Standard Prices: $350 – $550

High End Pricing: $550 – $700

More On uPVC Replacement Windows

Once the vinyl is extruded, the frame is sold to manufacturers (unless the manufacturer makes their own vinyl extrusions), who then puts the frame together. At this point in the process the frame is hollow. The manufacturer can leave the chambers empty (less strong and less costly), put in foam fills (more energy efficient, no effect on strength), reinforce the meeting rail using aluminum inserts (some added strength), reinforce the meeting rail with fiberglass inserts (adds some strength and energy efficiency) or reinforce each side with galvanized steel (adds lots of strength and a bit less energy efficient)

Design Pressure Test

Design pessure test using an independent 3rd party to test and score how effectively a window withstands air, wind and forced entry. The higher the score the better. When comparing these numbers it is important to compare comparable frame size. This number is only one indicator of energy efficiency, along with R & U values as well as SHGC.

uPVC Windows Manufacturers

The following companies make what some industry experts consider to be the best replacement uPVC windows.


Related Topics

Fiberglass Frames
Wood Prices
Vinyl Prices