Blog > Category > Posted: 2022-Jun-28, Updated: 2023-May-04

Window replacement - To sash or not to sash?

Sash vs no sash - interior and exterior views
When you are considering the overall look of a window, choosing the right sash option could dramatically affect the lighting and aesthetics of your home. This article may show the sash in a new light.

The sash

A sashed window is a traditional frame-styled window that is typically used in fixed and operational windows. The frame which can be several inches high depending on the manufacturer provides added window frame strength and hides the inner hardware needed to secure operational windows.

Sashed windows have several benefits, including:

  1. Better insulation: The sash design creates an air-tight seal that minimizes heat loss, making your home more energy efficient and reducing your energy bills.
  2. Enhanced security: Sashed windows are often designed with locking mechanisms that provide better security compared to sashless windows.
  3. Versatile design: Sashed windows are available in a range of styles and designs, allowing you to customize the look and feel of your home.
  4. Improved ventilation: Sashed windows can be opened at the top or bottom, allowing for improved ventilation and airflow in your home.
  5. Increased home value: Sashed windows are a popular and desirable feature in many homes, and installing them can increase the value of your property.

Here are some potential cons of having a sashed window:

  1. Reduced viewing area: The sash can block some of the views when the window is closed.
  2. More maintenance: Sashed windows can have more moving parts that require maintenance, such as hinges and locks.
  3. Higher cost: Sashed windows can be more expensive than other types of windows due to their more complex design and construction.
  4. Drafts and air leaks: Sashed windows can be more prone to drafts and air leaks than other types of windows, particularly if the weatherstripping is not properly installed or maintained.

A sashless window

A sashless (or low profile) window is considered a modern window and although some companies may offer sashless operational windows, sashless windows are typically only available as a fixed picture window (also known as panoramic windows).

Sashed windows have several benefits, including:

  1. Unobstructed views: allowing for an uninterrupted view of the outdoors.
  2. Less maintenance: can be cleaned easily from both sides.
  3. Versatility in design: They are also highly customizable in terms of size and shape, offering.

Here are some potential cons of having a sashless window:

  1. Energy efficiency: reduced energy efficiency compared to sashed windows, as they may not provide as good of a seal against the outside elements.
  2. Cost: They may also be more expensive to install than traditional sashed windows.
  3. Operation: Without a sash to hold onto, opening and closing the window may require more effort and be less convenient.
  4. Parts: Sashless windows may not be as widely available or common as sashed windows, which could make finding replacement parts or getting repairs more difficult.


If you are considering having a combination of a fixed picture window paired with an operational window such as a hung, casement or awning window into a single-window opening, you still may want to consider your sash or no sash option for the fixed window. See the examples below.


The photo above show:

  • Left - a fixed picture window (sashed) paired with a casement window (sashed)
  • Right - a hung window (sashed) paired with a picture window (no sash)

Related topics

Diagram - Anatomy of a window (exterior view)

e-book - Almost everything to know about windows

Diagram - Anatomy of a window (interior view)

Single-glazed vs multi-glazed windows

What's to know about window jambs?

Waterproofing your windows starts with the flashing

Need more information?

Are you looking to replace your windows but unsure of whether to go for sash or non-sash windows? Let Bayview Windows help you make an informed decision. Contact us today for a free consultation and let our experts guide you towards the perfect solution for your home's energy efficiency, comfort, and aesthetic appeal.

Don't wait any longer to upgrade your windows and start enjoying a more sustainable and comfortable living space.

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