Every standard window design includes a sash. This is a very important component of the entire window which is necessary for its smooth functioning, stability and overall appearance. Most homeowners tend not to give the structure of the windows a second thought as long as they are opening, closing and fulfilling their job of keeping the outside air out and inside air in. Knowing what a window sash is, why they are replaced and what signs of damage to look out for are all part of basic window restoration in Sydney. Continue reading this blog to find out more about the importance, types and everything there is to know about window sashes.
What is Window Sash?
The part of the window which surrounds the glass, holding it in place within the window frame, is known as the sash. Some types of window sashes are moveable while others are not. Those that do move allow the glass to slide up and down along its track. Modern window designs typically feature two types of sashes. Single-hung windows have a sash that moves while the other doesn't, while in double-hung windows both sashes can be moved.
Types of Window Sashes :
1 . Double-Hung Window Sashes
Such windows feature an upper and lower window sash. Both of these sashes are fixed parallel to each other. In most cases, the upper sash remains fixed while the lower slash can be slid up or down. In other instances, the upper sash can also be slid in either direction.
2 . Casement Window Sashes
Casement windows typically resemble a French door that opens and shuts instead of sliding open. Many are operated via crank while others are opened manually.
Casement windows offer a few advantages;
Casement windows can be fully opened, which is not the case with double-hung windows.
They facilitate superior airflow. The open window sash format allows more air to enter.
The open-door facility offers a wide unobstructed view of the outside.
Why is a Window Sash Important?
There is a very significant reason why window sashes are important. They are an integral part of the window, holding the glass in place and reinforcing the overall stability of the window frame. Sashes are designed to be completely airtight to prevent air leakage or draft from entering the house.
Sashes that are made to be moveable are also designed in a way that perfectly seals the air from escaping, supporting the energy efficiency of the entire house. With time, these seals become loose resulting in energy inefficiency.
Sashes of the windows have a special tightening feature which makes it possible for the window to maintain its tight seal. For instance, the vinyl sash features multiple chambers which prevent the window glass from being distorted. Otherwise, they would leak and emit drafts into the home.
How Does a Window Sash Work?
Window sashes fulfill a few significant functions within their framework. It consists of parts like sash cords, pulleys, rails, counterweights and wagtails. These components allow the sash to move smoothly and seamlessly along the track. This enables the window owner to move the sash effortlessly along its framing.
These essential components are all hidden away within the hollow lining of the window frame. Each of its sashes features a horizontal board that directs rainwater away from the window. This is crucial for preventing moisture collection which can lead to the formation of mildew and rot inside the window frame.
When to Replace a Window Sash?
Signs of damage on a window sash can be detected in different ways. As the sash is primarily designed to fix the window glass in place and to support smooth sliding movements, the ones that appear to be loose or have begun to fail in their function are most likely damaged. Eventually, they would fail in preventing water and gust from entering the premises. In many cases, signs of structural failure are hidden away within the frame until the window starts displaying signs of rot and rust.
Wooden Windows: Excessive air exposure over long periods of time can cause moisture absorption in wooden windows in tremendous amounts. The best way to prevent this is by keeping a tight seal around the wood, for instance, paint or sealant. Although, the seal can begin to wither away and end up swelling and shrinking due to high humidity. As a result, the window may stop functioning efficiently, getting stuck or jammed in its track. This can be prevented by replacing the window sash.
Aluminum Windows: Aluminum windows can start displaying signs of damage due to repeated exposure to sweating and condensation. This can cause rotting within the window frame. A unique way of spotting signs of damage earlier on is by inspecting the windows on a cold day. If the inside of the window feels wet to the touch due to droplets forming and condensing inside, it is best to have the sashes replaced. Even then, the entire window may need to be replaced later on.
Vinyl Windows: Vinyl windows used in the earlier days had a tendency to get warped and damaged with time and exposure to the elements. This problem has been corrected in the design of modern-day vinyl windows but the problem persists among the older ones. If the shape of the windows becomes warped and disfigured they would become particularly difficult to open. Soon, it can lead to water and air leakage. This problem can be dealt with a simple sash replacement.
So far, it has been established that maintaining or replacing window sashes is an essential part of window repair and maintenance. Homeowners need to pay closer attention to their sashes to determine whether they need single sash replacement or full double-hung window repairs in Sydney. It might be best to consult with a window repair specialist before proceeding further.