Fiberglass Replacement Windows
Built for maximum strength and minimal upkeep—fiberglass windows offer the best of both worlds.
Fiberglass Window Collections
Andersen
100 Series
Made with Andersen’s sustainable Fibrex® composite, these windows are strong, energy efficient and virtually maintenance free.
A Series
Architectural windows crafted for high performance and design flexibility, combining durable composite exteriors with wood interiors.
E Series
Custom aluminum‑clad wood windows available in unlimited colors and configurations to match any style.
Marvin
Essential
All‑fiberglass frames and sashes for exceptional strength, narrow sightlines and virtually no maintenance.
Elevate
Warm wood interiors paired with durable Ultrex® fiberglass exteriors for beauty and strength.
Why Choose Fiberglass?
- Superior durability—fiberglass resists warping, rotting and corrosion.
- Narrow frames for more glass and better views.
- Exceptional thermal stability—minimal expansion and contraction in temperature swings.
- Low maintenance and long lifespan.
Our fiberglass windows are engineered to withstand Minnesota’s tough weather conditions. Let us help you find the perfect style and finish.
Fiberglass Window FAQs
- What do fiberglass replacement windows cost?
- Fiberglass frames are a premium choice. Costs depend on size and options. Try our upcoming Build Your Price tool for a quick estimate, or schedule a consultation for a precise quote.
- Are fiberglass windows stronger than vinyl or wood?
- Fiberglass is exceptionally strong and dimensionally stable, resisting warping, rotting and thermal expansion better than many other materials.
- Do fiberglass windows improve energy efficiency?
- Yes. They maintain their shape in temperature swings and, paired with high‑performance glass, deliver outstanding insulation.
Get Started Today
Use our upcoming Build Your Price tool for an instant estimate, or schedule an in‑home consultation with our experts.