A sash is an integral component of any standard window. By understanding its workings, you can ensure it remains in good condition and detect any problems early.
Sash windows consist of two framed window units that slide up or down together. They are balanced by weights on cords and pulleys hidden within the frame for added security.
What is a sash?
A sash is the portion of a window that holds the glass in place. It can be constructed from wood, vinyl, aluminum or other materials and attached to its frame for strength and aesthetics.
Sashes are an integral component of windows and play a significant role in their structure and integrity. Sashes typically feature multiple chambers to maintain air tight seals that prevent leaks or drafts in your home. Without this feature, windows could potentially leak air or emit drafts that can lead to serious problems with your comfort level.
Window sashes can be made from a range of materials, such as wood, aluminum, fiberglass, composite and vinyl. Furthermore, they come in various sizes and shapes which will determine the cost-effectiveness of window replacement projects.
Sash windows are often found in homes that reflect the Victorian, Edwardian or Georgian eras. While they provide a classic aesthetic, sash windows can also be quite costly for those wishing to maintain the classic charm of their older property.
Sash windows are made up of several components that work together to allow the sashes to slide up and down with ease. These include the sash cord, counterweight, rails, pulley, and wag tails.
Sash weights
Window sash weights assist with the weight of the window sash, enabling it to open and close properly. There are various types of sash weights available, but the two most popular materials are lead and metal.
Lead weights come in a range of shapes, including round, square and rectangular. For decades they have been used to balance sash windows on thousands of buildings around the world.
If the weights on your window sash have worn away, you may need to replace them. This is particularly important if the sash is made up of insulated glass.
Therefore, it’s essential to replace them as soon as possible in order to enjoy a safer, more comfortable and energy-efficient home. Fortunately, finding a trustworthy manufacturer who can replace your old weights with new ones won’t be hard at all.
Before you can replace sash weights, you must first determine their correct size. This can easily be done using an ordinary household or bathroom scale.
When selecting windows for your home, it is important to take into account their weight capacity. A short, wide window will be heavier in proportion to its height, thus needing a heavier sash weight in order to open and close correctly.
Different balance types exist, but each has their own drawbacks. For instance, spiral balance units require considerable force to lift the sash due to a spiral rod and spring assembly that rotates when lifted.
Sash cords
The sash cord is a rope that runs through a pulley system, enabling the window sash to slide up and down or side-to-side. Additionally, it carries an internal counterbalance weight which balances the weight and keeps your window from slamming shut.
The counter balance system is commonly found in double-hung windows and consists of two cast-iron weights, a pulley and sash cord connecting them together. These weights make up half the window sash weight and attach to each side through their respective sash cords which in turn are attached to pulleys within the frame.
Over time, the sash cord can weaken or break due to various causes. These could include paint effects, frictional chafing, or simply general wear-and-tear.
When installing or repairing windows, it’s essential to get a quality sash cord. Opt for cotton with a synthetic reinforced core to improve tensile strength and reduce tearing in the cord.
When installing window sash cords, make sure they are long enough to reach from the sill area up to the top of the jamb and six inches above it. If unsure of its exact length, measure from where the window sill meets the top of the jamb and add six inches.
Sash pulleys
A sash pulley is a mechanism used in double-hung sash windows to enable smooth operation. This device consists of an internal cord running through the frame of the window and connecting to a wheel or pulley system at the top, enabling the sash to be pulled up and down or side to side while evenly distributing weight at one end of the pulley.
Sash pulleys come in several styles. All are constructed of solid brass with a ball bearing and axle for protection against dirt and grime as well as easy maintenance – making them great choices for decades to come.
Sash pulleys come with either square or round wheels and can accommodate both traditional sash chain and rope. Plus, they come in seven finishes to blend seamlessly with any home, whether traditional or modern.
Sash pulleys are an integral component of a sash window’s operation. They connect sash cords to weights on the window sashes, helping keep them from closing too quickly.
Some sash pulleys feature a curved wheel for better balance, while others boast square wheels to guarantee maximum strength and longevity.
Installing sash pulleys requires first removing interior vertical trim on one or both sides of the window. The window weights and some rope may then be taken out as well.
Sash rails
Window sashes are the parts of windows that hold the glass in place and open and close the window. Sashes come in a range of materials such as wood, aluminum, fiberglass and composites.
The sash frame of a window is composed of vertical side members called stiles and horizontal horizontal members called rails. On double-hung windows, there are four rails: the bottom rail, two meeting rails or check rails that meet in the middle, and finally, the top rail.
Each sash also contains a horizontal board or sill that directs rainwater away from the window, preventing moisture accumulation inside and leading to mildew and rot. These parts play an essential role in keeping homes warm during winters and cool during summers.
Selecting the ideal sash rail for your window is essential to guarantee it opens and closes smoothly. Make sure it’s strong, durable, and doesn’t break easily.
Additionally, sash rails should be constructed from material resistant to warping or distortion. Doing so will guarantee its aesthetic appeal for years to come.
Before you can restring a double-hung sash, you must first remove the stop moulding (the vertical strip on the window frame against which the sash slides). If these stops are screwed in place, score them with a putty knife to loosen them.
Sash wag tails
Sash windows are a timeless classic design found in many properties around the world. Their design allows for smooth and effortless movement of the window, opening or closing with ease. Furthermore, they feature an optional horizontal board or sill at the base that directs rainwater away from the window, helping prevent rot and mildew problems.
Sash weights (usually lead or cast-iron) provide counterbalance to the sash as it moves up and down within its frame. They are typically attached to the sash cord, running over a pulley on top rail of window.
The sash cord is typically braided and runs over the top rail and through a bottom rail, creating an even movement without any kinks or wiggles. Wag tails are used to separate weights from each other and prevent them from becoming tangled.
When selecting a sash wag tail, there are various options to choose from depending on the type of sash you have. Care should be taken when fitting them so as not to damage the sash and ensure the length is appropriate so the sash doesn’t get stuck when closed or opened.
To remove the sash wag tail, pry open the pocket section and pull each weight out through it – making sure the sash cord remains attached as well. Use an excellent quality white 6mm marine rope or cord so it does not stretch over time.
