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Advantages of Fiberglass Windows

Why Fiberglass Makes the Best St. Louis Replacement Window

When choosing to replace old, drafty windows St. Louis homeowners cannot make a better, more durable choice that Infinity from Marvin windows from Lakeside Exteriors.

Infinity® from Marvin replacement windows and doors are made from Ultrex fiberglass, a material so strong and durable it is superior to other window materials. Best of all, it makes Infinity products virtually maintenance free.

Advantages of Ultrex Fiberglass Replacement Windows St. Louis

  • Low maintenance
  • Base material is silica sand — an abundant natural resource
  • Intricate profiles replicate the look of traditional wood windows
  • Low expansion provides easy operation for the life of the window
  • Strength keeps windows square and true
  • Narrow profiles allow for more visible glass area and expanded views
  • Long-term stability reduces the risk of seal failures and air leakage through the window
  • Patented, mechanically bonded inline acrylic finish is up to 3x thicker than competitive finishes, providing superior resistance to discoloring, scratching, and denting
  • Ultrex fiberglass is 8x stronger than vinyl and one square inch can support 34,000 pounds!*
  • Fiberglass windows have a 38% longer useful life expectancy than vinyl.**
  • Infinity windows with LoĒ glazing can reduce your heating and cooling bills by up to 30%.***

* Stiffness of the material to perform as designed. This stiffness is the flexural modulus of the material and is expressed in pounds per square inch.

** Life cycle assessment of windows for the North American residential market: Case study” by the University of British Columbia. Scandinavian Journal of Forest Research, 2008.

*** Estimated savings are based on data set forth in the Window Selection Tool of the Efficient Windows Collaborative, available at http://www.efficientwindows.org. Actual savings will vary by product type, location, method of installation, individual home characteristics, local climates and conditions, utility rates, and other factors.