Comparing Andersen Windows in Wisconsin?
Explore a premium replacement window option installed by a trusted local Wisconsin team with nearly 30 years of experience.
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Lifetime Warranty on Infinity By Marvin windows -
Free in-home estimates — no pressure -
Licensed, insured & locally owned since 1997
Contact Quote
Why Choose Windows of Wisconsin Over Andersen?
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Uses durable Infinity By Marvin® windows featuring Ultrex® fiberglass instead of standard Andersen lines. -
Provides certified installation backed by nearly three decades of experience. -
Delivers personalized, dedicated service for homeowners across Northeast Wisconsin.
Built for Wisconsin's Climate
Premium Replacement Specialists
Certified Installation
Personalized Service
Local Company Since 1997
Infinity By Marvin at a Glance
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Ultrex® fiberglass construction -
Industry-leading strength -
Outstanding thermal performance -
Low maintenance -
Wide variety of colors and finishes -
Durable AAMA 624 verified acrylic finish -
Designed specifically for replacement applications
Infinity By Marvin vs. Andersen Materials
One of the biggest differences between window manufacturers is the frame material. Infinity By Marvin uses Ultrex® fiberglass, while Andersen offers wood, Fibrex® composite, vinyl, and aluminum-clad wood depending on the collection.
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Ultrex® fiberglass
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8× stronger
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Minimal movement
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Fully resistant
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AAMA 624 acrylic
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Replacement-specific
Why Wisconsin Homeowners Choose Infinity By Marvin
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8× stronger than vinyl -
3× stronger than Fibrex® composite -
Excellent resistance to expansion and contraction -
Resists warping and moisture damage -
Outstanding durability during seasonal temperature changes -
Long-lasting acrylic finish that resists fading
What You Get With Windows of Wisconsin
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FGIA InstallationMasters Certified -
Dedicated Project Management -
Manufacturer & Workmanship Warranty -
Clear Communication -
No Outsourced Labor Only Windows of Wisconsin Installation Professionals -
Premium Products Only -
Local Installation Teams
Why Many Wisconsin Homeowners Choose Fiberglass
Infinity By Marvin windows are made with Ultrex® fiberglass, a material that’s 8x stronger than vinyl and 3x stronger than Fibrex®. The result is a stronger, more stable window that delivers lasting durability, energy efficiency, and performance in Wisconsin’s climate.
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8× stronger than vinyl -
3× stronger than Fibrex® composite -
Excellent resistance to expansion and contraction -
Resists warping and moisture -
Outstanding durability during Wisconsin's seasonal temperature changes -
Long-lasting acrylic finish that resists fading
How Ultrex Fiberglass Compare
The Characteristics that separate Ultrex from other windows and doors truly make Infinity Built for life.
Customer Testimonials
Window Styles Available
Choose from our wide selection of window styles to match your home's architecture and your personal taste.
Serving Northeast Wisconsin
Windows of Wisconsin proudly serves homeowners across Northeast Wisconsin. From Green Bay to Appleton, Oshkosh to Sheboygan — we’re your local window replacement experts.
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Green Bay -
Oshkosh -
Fond du Lac -
Two Rivers
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Appleton -
Sheboygan -
Manitowoc -
Sturgeon Bay
Examples of Our Craftsmanship
Browse our recent installations across Wisconsin homes of all styles and sizes.
Frequently Asked Questions
Everything you need to know about window replacement in Wisconsin.
Is Renewal by Andersen the same as Andersen Windows?
No. Renewal by Andersen is Andersen’s replacement window division. Andersen also manufactures multiple window series that are sold through dealers, contractors, and retailers.
How does Infinity from Marvin compare to Renewal by Andersen?
Both are premium replacement window products. Infinity from Marvin features Ultrex® fiberglass, known for its exceptional strength, durability, and resistance to temperature changes. The best choice depends on your home’s needs, budget, and installation quality.
Why choose fiberglass instead of composite or vinyl?
Fiberglass offers exceptional strength and dimensional stability. Because it expands and contracts very little with temperature changes, it helps maintain tighter seals and long-term energy efficiency.
Do you install Andersen windows?
No. Windows of Wisconsin specializes in installing Infinity from Marvin replacement windows. We believe they offer an outstanding combination of durability, energy efficiency, and long-term performance for Wisconsin homeowners.
Do you offer financing?
Yes. Flexible financing is available through Service Finance.
Is installation included?
Yes. Every project includes professional installation performed exclusively by Windows of Wisconsin employees never outsourced subcontractors.
What warranty do you provide?
Infinity from Marvin windows include a comprehensive manufacturer warranty, and Windows of Wisconsin backs every installation with a 5-year workmanship warranty.
Which areas do you serve?
We proudly serve homeowners throughout Northeast Wisconsin, including Green Bay, Appleton, De Pere, Kaukauna, Neenah, Menasha, Oshkosh, Manitowoc, and surrounding communities.