Choosing Sash Window Hardware
Traditional sliding sash windows use a number of specialist fittings to allow the upper and lower sashes to move smoothly, remain balanced and be operated comfortably.
Typical sash window hardware includes sash pulleys, sash cord, sash lifts, pulls, eyes, stops and fasteners.
When repairing or restoring a sash window, consider the existing window construction, sash weight, pulley arrangement, cord type, available fixing space and preferred architectural finish.
How Traditional Sash Windows Work
A traditional sash window normally consists of one or more glazed panels, known as sashes, that slide vertically within the window frame.
Many traditional designs use counterweights concealed within the sash boxes. The sash is connected to these weights using cord running over pulleys positioned within the frame.
When properly balanced, this system allows a relatively heavy glazed sash to move smoothly and remain at the required opening position.
Sash Pulleys
A sash pulley is fitted into the side of the sash box and guides the sash cord between the moving window and the concealed counterweight.
The pulley therefore forms an important part of the operating mechanism.
When replacing sash pulleys, consider the pulley dimensions, wheel capacity, plate shape and available recess within the existing frame.
Different faceplate styles are available, including square-ended and radiused designs.
Choosing Sash Pulleys for Heavy Windows
The sash pulley needs to be suitable for the weight of the sash and counterbalance system.
Larger or heavily glazed windows can place significantly greater loads on the pulley than smaller traditional sashes.
Always check the stated load capacity of the individual pulley rather than selecting one solely by appearance.
Sash Cord
Sash cord connects the moving sash to the counterweights concealed within the sash box.
As the sash moves, the cord travels over the pulley and allows the counterweight to balance the window.
When replacing damaged or worn sash cord, check the required cord diameter, length and compatibility with the existing pulley groove.
If restoring several windows, allow sufficient cord for both sides of each moving sash.
Sash Lifts
A sash lift is normally fixed towards the bottom of the lower sash and provides a convenient handhold for raising the window.
Sash lifts are commonly installed as a pair so that the sash can be lifted evenly using both hands.
They are available in numerous traditional and contemporary finishes, making them one of the most visible decorative elements of a sliding sash window.
Sash Pulls & Handles
Depending on the window arrangement, sash pulls or handles can provide an alternative gripping point for opening and closing the sash.
Slim designs can be useful where available fixing space is limited.
Before installation, check the dimensions of the fitting and ensure that it will not interfere with adjoining timber profiles or window operation.
Sash Eyes
Sash eyes provide a small gripping point that can assist with operating the window.
They are particularly useful where a discreet fitting is preferred or where traditional detailing needs to be maintained.
Sash eyes can also be coordinated with sash lifts, fasteners and other visible window furniture.
Sash Stops
A sash stop restricts how far a sliding sash can open.
Different designs are available, including key-operated and locking stops.
Stops can provide useful control over the opening of a traditional window, but they should be selected according to the actual window construction and required operation.
Where child safety or a specific security performance is required, the suitability of the individual product and complete window arrangement should be assessed rather than relying solely on the presence of a sash stop.
Sash Window Fasteners
A sash fastener secures the upper and lower sashes together at their meeting rails when the window is closed.
Traditional designs include Fitch, Brighton, Quadrant and sash-hook fasteners.
Roundtower Hardware stocks these within our dedicated Window Fasteners collection, allowing this Sash Window Hardware page to remain focused on the wider operating and restoration components.
Restoring Period Sash Windows
Existing sash windows often contain a mixture of original and later replacement hardware.
Before replacing fittings, check the dimensions and fixing locations of the existing components.
Where original timber is being retained, selecting fittings with compatible dimensions can reduce the need for additional cutting, filling or repair work.
This can be particularly important on historic windows where unnecessary alteration to surviving joinery should be avoided.
Choosing the Right Finish
Traditional sash windows work particularly well with Aged Brass, Bronze, Black, Pewter and Polished Brass hardware.
Chrome, Nickel and Stainless Steel provide alternatives for cleaner or more contemporary joinery.
Where several fittings are visible on the same window, coordinating sash lifts, fasteners and stops in the same or complementary finish can create a more considered appearance.
Frequently Asked Questions
What hardware is used on a sash window?
Typical sash-window fittings include sash pulleys, cord, lifts, pulls, eyes, stops and fasteners.
The exact components depend on the construction of the window.
What does a sash pulley do?
The pulley guides the sash cord between the moving sash and the counterweight concealed within the window frame.
What is sash cord used for?
Sash cord connects the sash to its counterbalance weight.
It runs over the sash pulley as the window is raised or lowered.
Where are sash lifts fitted?
Sash lifts are normally fitted to the lower rail of the bottom sash and are commonly used in pairs.
What is a sash stop?
A sash stop restricts the amount that the window can open.
Locking and key-operated versions are available depending on the required function.
What is the difference between a sash stop and sash fastener?
A sash stop restricts opening, while a sash fastener secures the upper and lower sashes together when closed.
Can old sash-window hardware be replaced?
Yes.
Measure the existing fittings and fixing positions carefully before ordering replacements, particularly when working with historic timber windows.
Can sash hardware be matched in the same finish?
Yes. Matching sash lifts, fasteners, stops and other visible fittings can create a more coordinated traditional window scheme.
Need Help Choosing Sash Window Hardware?
The correct fittings will depend on your window construction, sash weight, pulley and cord arrangement, existing dimensions and preferred finish.
Roundtower Hardware supplies a wide range of sash window hardware in Ireland for period restoration, traditional joinery and replacement projects.
Contact our team if you need help identifying suitable pulleys, cord, lifts, stops or other sash-window fittings.
