Table of Contents
Guide to Window Types & Names
There are 7 main types of windows you can use in your home:
- Picture Windows
- Casement Windows
- Bay Windows
- Single-Hung Windows
- Double-Hung Windows
- Windows with awning
- Horizontal Sliding Windows
Below is a guide to window styles that will discuss the benefits of each style.
Picture Windows provide views of the outside and are available in large sizes. The picture window glass can be set with metal grids to reduce obstructive effects, especially for large windows.
Picture windows are fixed and do not open. A fixed picture window will not provide ventilation. However, permanent seals can be more energy efficient.
Casement Windows can be opened by turning a crank at the bottom of each window. Because the whole window opens, casement windows provide excellent ventilation. It is easy to use the crank with just one hand. This allows them to be installed in places that might otherwise be difficult or impossible to reach.
Gasketting is applied around the entire panel of a casement window to make them slightly more efficient than sliding windows.
Quality casement windows are durable and can last a lifetime. However, older casement windows might eventually need to be repaired or their crank mechanism may wear out. It is possible that the exterior of the casement windows may not be accessible from the inside.
The Bay Windows extend outwards (beyond the house walls) and are made up of several angled window panels. Bay windows are often found in kitchens and can offer wide views beyond what flat windows can.
The angled side windows are usually openable, which allows for good ventilation.
Single Hung Windows
Single-hung Windows are usually installed in smaller rooms like bedrooms or bathrooms. The term “single” refers to the fact that only one sash can open, rather than double-hung windows which allow both to be opened.
Single-hung windows are usually less expensive than double-hung versions.
Double Hung Windows
When closed, double-hung windows look similar to single-hung windows. Double hung windows can be opened by opening both sashes. A double-hung window provides better ventilation than a single-hung window of the same size.
The example image shows a tilting or “hinged” style. Double-hung windows can also be available in sliding versions. However, both sashes cannot be opened simultaneously on a sliding model.
Double-hung windows are safer than single-hung windows in certain situations. The top window can be opened, while the bottom is locked.
Windows with awning
An awning window is a casement window that opens vertically. Awning windows are similar to casement windows and provide excellent ventilation. They also seal well.
Bedrooms are a common place for awning windows. Because the crank mechanism can be operated while you reach, they can be placed in any high or narrow place (like above doors or windows).
Horizontal Sliding Windows
Horizontal Slide Windows have been more popular than any other style because they are flexible and cost-effective. Horizontal sliding windows can be wider than vertically opening single- or double-hung windows.
Horizontal Sliders come in single-slider and double-slider versions.
A horizontal sliding window is usually easier to clean than an awning or casement window. They are, however, less efficient than hinged Windows and can sometimes accumulate dirt/grime.
Washington State Replacement Window Guide
Whether you are looking for inspiration or identifying a window that is in need of replacement, this guide will help you to understand the most common styles.
Vertically opening Windows
There are two types of windows that can open vertically. Double-hung Windows feature 2 sliding sashes. The top or bottom can be opened. Single-hung windows look similar, but the bottom can only move up. The top is fixed. For their versatility and convenience, vertically opening sliding windows are extremely popular in Greater Seattle.