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Double Hung Windows

Double Hung Windows

Double hung windows, renowned for their classic design and versatility, have long been a favorite among homeowners in Chicago. Featuring two sashes that can be slid up and down within the frame, these windows offer both style and practicality. In this comprehensive guide, we'll explore the world of double hung windows, including the unique twin double hung windows. We'll also provide step-by-step instructions on how to open these windows effectively, all while keeping in mind the specific needs of Chicago residents.

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Double Hung Windows Customization Options

Exterior/Interior Finishes

Solid finishes

Solid white finish
Solid almond finish

Painted finishes

Our paint has been specially designed for vinyl windows and engineered for maximum durability and heat reflection:

  • Non-toxic, non-hazardous, non-flammable, environmentally friendly, lead- and chromium-free;
  • Has excellent cohesion to the vinyl. It is elastic and moves with the vinyl as it expands and contracts. Also, the paint has exceptional abrasion and impact resistance.
  • Ensures both long-term color retention and low heat absorption.
Painted bronze finish
Painted black finish

Laminated finishes

The laminate films endure a series of rigorous tests performed within the Grafco laboratory. These tests include heat reflectivity, Delta E (fade factor), distortion and adhesion, allowing us to offer a lifetime warranty.

Laminated light oak finish
Light Oak
Laminated dark oak finish
Dark Oak

Some of the Custom Color Options

Painted royal bronze finish
Royal Bronze
Painted cocoa finish
Painted bonneville green finish
Bonneville Green

Insulated Glass Units

Double- and Tripple-pane Glass Units

Our window and door products feature insulated glass units (IGU) with dual or triple pane combinations.

Solid white finish
Double glass unit
Solid almond finish
Tripple glass unit

Thickness ranges from 0.708" to 1.417" (18-36 mm) depending on the product. Glass panes are available in various thicknesses and types.

Coated glass, tints, and patterns are available for double and triple pane units. NEAT® coating on the exterior surface allows for easy cleaning.

Energy-efficient Spacers

The energy-efficient spacer systems used are stainless steel INTERCEPT UltraSpacer®, Endur, and organic SuperSpacer®. The spaces between the glass can be filled with dry air, argon, or a mix of argon/krypton gases.

Solid white finish
Solid white finish
Endur® Warm Edge
Solid white finish
Super Spacer®

All glass units meet industry standards and undergo frequent electronic quality checks. IGUs have a 20-year warranty for seal failures, the highest standard in the industry.

Glass Options


Cardinal LoE coated glass performance

LoĒ-270 Coated Glass

LoĒ coated glass delivers year-round comfort in any weather. In summer, it rejects the sun’s heat and damaging UV rays. In winter, it reflects heat back into the room.

LoĒ-366 Coated Glass

LoĒ-366 is a clear coating that blocks even more solar gain, reflects heat, and lets the light stream in. It even outperforms the tinted glass often used in warm climates.

Cardinal LoE-270 coated glass
LoE-270 coated glass
Cardinal LoE-366 coated glass
LoE-366 coated glass


Cardinal Annealed glass
Annealed glass break pattern (not safety certified)
Cardinal Tempered glass
Tempered glass break pattern (meets safety criteria)
Cardinal Laminated glass
Laminated glass break pattern (meets safety criteria)

Annealed glass

Annealed glass, commonly known as the standard glass, undergoes a thermal treatment process followed by slow cooling to eliminate internal stresses. It is commonly utilized in applications where safety considerations are not a primary concern.

Fully tempered glass

Fully tempered glass is significantly stronger than annealed glass, with a strength four times greater. In the event of breakage, it shatters into small, safe pieces, minimizing the risk of injury.

Heat Treated Glass

Heat-strengthened glass undergoes a slower cooling process compared to tempered glass, resulting in a lower compression strength. However, it still provides approximately twice the strength of annealed glass.

Laminated Glass

Laminated glass can withstand strong impacts. It is a superior solution to safety glazing.

Laminated glass does more: it is the type of safety glazing that also remains intact within the window frame.


Neat Glass

Unlike regular exterior window surfaces, Neat glass requires minimal maintenance. With Neat technology, the glass stays cleaner for longer periods. And when the time comes to clean, you'll find it quick and effortless.

Cardinal Neat glass

Grid Options

Decorative grids or blinds can be added and are sealed within the glass units.

Farmhouse grid style
Farmhouse grid style
Colonial grid style
Colonial grid style
Praire grid style
Praire grid style

Understanding Double Hung Windows

Double hung windows are named for their two operable sashes that can move independently within the window frame. This distinctive feature allows for various ventilation options and is well-suited to both traditional and contemporary architectural styles.

Twin Double Hung Windows

Twin double hung windows are essentially two double hung windows installed side by side. Here's why they are an attractive option:

  1. Expansive Views: Twin double hung windows provide a wide expanse of glass, allowing for exceptional outdoor views and abundant natural light.
  2. Enhanced Ventilation: With twice the number of operable sashes, twin double hung windows offer excellent control over airflow, making them ideal for rooms where fresh air circulation is crucial.
  3. Aesthetic Appeal: Their symmetrical design adds a touch of elegance to any home, making them a popular choice for both traditional and modern residences.

How to Open Double Hung Windows

Opening double hung windows is a straightforward process:

  1. Unlock the Sash: Locate the lock mechanism on the meeting rail, which is the horizontal bar where the two sashes meet. Unlock the sash by turning or pushing the lock, depending on the window's design.
  2. Lift or Lower: To open the bottom sash, grasp it with both hands and push upward. Conversely, push downward to open the top sash. Use even pressure on both sides to ensure smooth operation.
  3. Adjust for Ventilation: You can control the amount of ventilation by partially opening either the top or bottom sash. Experiment to find the perfect balance of airflow and security.
  4. Close and Lock: When you're done, reverse the process. Lower the sash and engage the lock to secure the window.

Double Hung Windows in Chicago

Double hung windows are particularly well-suited to the Chicago climate and architectural styles. Here's why they are a popular choice:

  1. Versatile Ventilation: In a city with diverse weather patterns, the ability to control airflow through double hung windows is highly valuable. You can adapt to changing temperatures with ease.
  2. Classic Aesthetic: Double hung windows complement Chicago's historic homes and blend seamlessly with more modern architectural designs.
  3. Easy Maintenance: The tilt-in feature of many double hung windows simplifies cleaning, allowing you to access both sides of the glass without stepping outside.

Double hung windows, including the elegant twin double hung windows, are a timeless choice for Chicago homeowners. Their versatile design, easy operation, and adaptability to the city's climate and architectural styles make them an ideal window option. When considering double hung windows, consult with a reputable window professional to explore the customization possibilities for your Chicago home. With the right double hung windows, you can enjoy enhanced comfort, ventilation, and aesthetic appeal in your living spaces.

Frequent Questions Answered

Are double hung windows energy-efficient?
Yes, double hung windows can be energy-efficient when installed with low-E glass and insulated frames. Look for windows with ENERGY STAR certification for optimal energy savings.
Can I replace a single window with twin double hung windows?
Yes, it's possible to replace a single window with twin double hung windows if the opening allows for it. Consult a window professional to assess the feasibility and make the necessary adjustments.
Are double hung windows suitable for homes with children or pets?
Double hung windows are a safe choice, especially when equipped with childproof locks and screens. They allow for secure ventilation without the risk of pets or children pushing out the window.
Can I customize the appearance of double hung windows to match my home's style?
Absolutely! Double hung windows are available in various materials, colors, and finishes, allowing you to tailor them to your home's unique aesthetics.