---
title: Window Styles & Installation | Illumination Windows
description: Double-hung, casement, bay & bow, picture and specialty-shape replacement windows, installed with meticulous precision across the Chicago suburbs.
---

[![](https://www.illuminationwindows.com/hs-fs/hubfs/Job%20Photos/iw-logo-mark.png?width=40&height=40&name=iw-logo-mark.png) Illumination Windows](https://www.illuminationwindows.com/?hsLang=en)

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[Services](https://www.illuminationwindows.com/services?hsLang=en) [Our Process](https://www.illuminationwindows.com/our-process?hsLang=en) [Service Area](https://www.illuminationwindows.com/service-area?hsLang=en) [Reviews](https://www.illuminationwindows.com/reviews?hsLang=en) [About Us](https://www.illuminationwindows.com/about?hsLang=en) [Journal](https://www.illuminationwindows.com/journal?hsLang=en) [Claim My $500 Off](https://www.illuminationwindows.com/#quote)

[Call](tel:+17739644260) [Claim My $500 Off](https://www.illuminationwindows.com/#quote)

Window Solutions

# Every style. Expert installation.

---

From classic double-hungs in historic bungalows to custom arched windows in contemporary builds — installed with meticulous precision.

Most Popular

## Double-Hung Windows

Both sashes travel independently for versatile ventilation and easy interior cleaning. The tilt-in design keeps maintenance effortless year-round.

- Independent upper and lower sash operation
- Tilt-in sashes for easy cleaning
- Wood, vinyl, aluminum-clad, and fiberglass options
- Ideal for traditional and transitional architecture

Superior Seal

## Casement Windows

Side-hinged and crank-operated, casement windows compress their seal as they close — producing outstanding weatherproofing and dramatically reducing noise infiltration.

- Crank mechanism for effortless operation
- Compression seal for superior weatherproofing
- Unobstructed sightlines and maximum ventilation
- Inswing and outswing configurations available

Curb Appeal

## Bay & Bow Windows

Projecting window configurations that add dimensional space, architectural drama, and a flood of natural light. Custom-measured and reinforced for a permanent, seamless fit.

- Bay (3 panels) and bow (4+ panels) configurations
- Creates usable interior window seat space
- Structural reinforcement always included
- Significantly improves exterior curb appeal

Maximum Light

## Picture Windows

Fixed, non-operable panes with maximum glass-to-frame ratio. No moving parts means outstanding thermal efficiency and long-term reliability. Often combined with operable flankers.

- Maximum glass area for light and views
- Excellent thermal and acoustic performance
- Pairs beautifully with casement or awning units
- Custom sizes for any opening

## Slider Windows

Horizontal sliding sashes on a smooth track. Clean, contemporary profile that works especially well where casement units would interfere with exterior walkways or landscaping.

- Smooth-glide hardware with lift-out cleaning
- Low-profile frame for modern aesthetics
- Ideal for wide, low openings
- Two-lite and three-lite configurations

Custom Crafted

## Specialty & Custom Shapes

Arched tops, full circles, half-rounds, octagons, triangles — fabricated to exact dimensions and installed to preserve the architectural DNA of your home. The difference between a renovation and a transformation.

- Arched, circular, elliptical, and geometric shapes
- Factory-fabricated to exact measurements
- Matches existing trim and molding profiles
- Ideal for historic homes and distinctive architecture

Brands We Install

Climate SolutionsMarvinAndersen

## Find the right window for every opening.

Our specialists guide you through the options — free, in your home, same day.

Get a Free Quote

![Illumination Windows](https://www.illuminationwindows.com/hubfs/raw_assets/public/illumination-windows/images/logo-mark-footer.png)

Premium window replacement for Chicago-area homeowners. Licensed, bonded, and insured.

[(773) 964-4260](tel:+17739644260)[Greg.Saiki@illuminationwindows.com](mailto:Greg.Saiki@illuminationwindows.com)River Forest, IL · Mon–Fri 8am–6pm

##### Services

- [Double-Hung](https://www.illuminationwindows.com/services?hsLang=en)
- [Casement](https://www.illuminationwindows.com/services?hsLang=en)
- [Bay & Bow](https://www.illuminationwindows.com/services?hsLang=en)
- [Picture Windows](https://www.illuminationwindows.com/services?hsLang=en)
- [Specialty Shapes](https://www.illuminationwindows.com/services?hsLang=en)

##### Company

- [About Us](https://www.illuminationwindows.com/about?hsLang=en)
- [Our Process](https://www.illuminationwindows.com/our-process?hsLang=en)
- [Journal](https://www.illuminationwindows.com/journal?hsLang=en)
- [Reviews](https://www.illuminationwindows.com/reviews?hsLang=en)
- [Service Area](https://www.illuminationwindows.com/service-area?hsLang=en)

##### Get Started

- [Free Quote](https://www.illuminationwindows.com/free-quote?hsLang=en)
- [How It Works](https://www.illuminationwindows.com/our-process?hsLang=en)
- [Our Warranty](https://www.illuminationwindows.com/about?hsLang=en)
- [Financing](https://www.illuminationwindows.com/about?hsLang=en)

© 2025 Illumination Windows LLC · River Forest, ILPrivacy Policy

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