Acclaim™ Custom & Specialty Windows

Renewal by Andersen Polar Block Sales offers custom and specialty replacement windows that go beyond standard window shapes. Whether you aim to infuse distinct character into an awkward space or simply maximize natural light, our custom windows are perfectly tailored to match your precise design vision and unique home needs in Illinois or Iowa.

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Customization Options

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Designed For You

Every specialty window is meticulously designed and manufactured to specifically complement and significantly elevate the architectural beauty and unique style of your residence.

Multiple Options

Homeowners can choose from 16 specific geometric shape styles, including striking options like full round, eye-catching hexagonal, sharp triangular, elegant arched units, and many more.

We Work With You

Our local Project Consultants will partner with you through every step, providing expert guidance to create a truly custom window solution that addresses your home's exact requirements.

When to Choose Replacement Specialty Windows

Living Rooms

Utilize unique shapes to establish an instant, dramatic focal point or expertly frame stunning outdoor views that are unique to the Central Illinois, Greater Des Moines and Quad Cities regions.

Entryways

Design a light-soaked, welcoming entrance that immediately boosts your home's perceived value and adds significant architectural interest.

Kitchens

Ideal for placement above sinks or in a small dining nook, providing ample added light and serving as a seamless design element to complete your kitchen’s aesthetic.

Lounges

Perfect for accentuating private or cozy retreats by adding a sophisticated touch of light and elegance where it's needed most.

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Features / Details

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Architectural Character

Every specialty unit is fabricated to perfectly match the exact arch and angles of your home's existing structure, significantly enhancing its overall character and architectural integrity.

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Maximized Daylight

Achieve the ultimate level of natural light exposure by using uniquely sized or shaped glass areas that are simply unobtainable with standard, conventional window dimensions.

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Value Proposition

Installing custom specialty windows creates a strong, distinguishing feature that will undoubtedly set your property apart and potentially boost its standing in the competitive Iowa and Illinois real estate market.

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Thermal Performance

Despite their unique shapes and sizes, these fixed-frame windows deliver excellent energy efficiency with an airtight seal designed for Illinois and Iowa's changing seasons.

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Total Flexibility

Enjoy the complete freedom to tailor shapes, sizes, and styles to precisely meet your most unique interior design preferences and exterior architectural needs.

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Signature Look

Opting for our custom windows allows you to distinctly and permanently refine your home's aesthetic, adding a truly unique and personal touch to your property.

Get a Deep Dive on Acclaim™ Custom & Specialty Windows

This short video highlights the key features of Acclaim™ custom and specialty replacement windows and helps you determine if they're the right fit for your home.

Get a Deep Dive on Acclaim™ Custom & Specialty Windows

Reviews

5 Stars+78,480 Reviews

Frequently Asked Questions

Although a specialty window requires a unique, completely custom build and is not mass-produced, our carefully optimized and fine-tuned manufacturing processes ensure that your custom unit will be fabricated and delivered on-time, coordinating seamlessly with the rest of your window order.

Renewal by Andersen Polar Block Sales offers a comprehensive range of custom design elements. This includes access to 48 different color combinations (featuring dual-color options for contrasting interiors/exteriors), 11 premium hardware finishes, and a selection of diverse grille options to perfectly complement the unique aesthetic of your home.

Fibrex® is our exclusive composite material, combining the durability of wood with the maintenance-free properties of vinyl. It is scientifically proven to be twice as strong as vinyl, provides outstanding thermal insulating properties, and never requires painting. Furthermore, our commitment to sustainability means Fibrex is made using 40% reclaimed wood fiber.

Our Polar Block Sales design consultants will guide you through a variety of advanced glass packages designed for Illinois and Iowa's climate. We will analyze specific performance details, including glass heating and cooling performance, the amount of visible light transmittance, and the level of ultraviolet (UV) protection to help you select the ideal, energy-efficient glass for your new custom windows.

That is one of their most common uses in our markets. Central Illinois has a significant stock of older homes with non-standard window openings that off-the-shelf sizes simply do not fit. The Quad Cities and Des Moines also have many homes with distinct architectural character—including arched, circular, or angled openings that require a fully custom solution. Our local Polar Block Sales Design Consultants measure and design to your exact opening, regardless of shape, angle, or size, and coordinate the custom build to arrive and install alongside the rest of your window order.