fiberframe replacement fiberglass windows

How Can I Confirm That My Windows Are ENERGY STAR Qualified When I Receive

ENERGY STAR® is a government-backed program that helps consumers identify energy efficient products. Look for the ENERGY STAR® label on your product. Every FiberFrame® window and door comes with a label that identifies its performance.

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Energy Efficiency

Fiberglass windows are more energy efficient

Windows can be responsible for 25% overall heat loss in your home.

Top 3 reasons fiberglass windows excel at energy efficiency:
  1. Stability. Fiberglass has almost zero thermal expansion. Essentially the same as glass itself, which means tighter seals against weather and always a true fit. 
  2. Durability. Fiberglass can withstand all of the elements and harsh weather. It will never rot, rust, corrode, warp, crack, dent, or split.
  3. Thermal Superiority. Fiberglass has low thermal conductivity, which means that it doesn’t allow heat or cold from outside into your home.

The Complete Energy Efficiency Package:
FiberFrame® fiberglass replacement windows + Cardinal Insulated Glass FiberFrame’s® fiberglass replacement windows are highly engineered to bring the maximum energy efficiency to your home. Our windows meet or exceed ENERGY STAR® guidelines, which means a more comfortable home for you.

The secret? Glass supporting glass. Through a special process that twists and hardened glass fibers, fiberglass is made. The fiberglass frames then hold and support the window glass, so it’s essentially glass holding glass. We use thermally improved Cardinal insulated glass and the Cardinal XL Edge Spacer Bar system.

Glass has the lowest expansion and contraction rate of any window material made, so the result is the best seal and insulation against weather possible. Add inert gases between the double panes and you couldn’t be more comfortable. All covered by a lifetime warranty. And, all without sacrificing one bit on style.