Choosing the Right Window Fastener
The correct window fastener depends first on the type of window you have.
Traditional casement windows require a fitting that secures the opening casement against the frame, while sliding sash windows use fasteners positioned around the meeting rails to hold the upper and lower sashes together.
When choosing window furniture, consider the window type, fixing arrangement, available mounting space, whether locking is required, handing and preferred finish.
Casement Window Fasteners
A casement fastener is fitted to an opening casement window and secures the window against the frame when closed.
Traditional designs include Monkeytail, Shepherd's Crook, Peardrop, Reeded, Avon and other decorative patterns, while simpler modern fasteners provide a more contemporary appearance.
Casement fasteners are commonly paired with matching casement stays, which hold the window in its selected open position.
Lockable Casement Fasteners
A lockable casement fastener incorporates an additional locking mechanism to prevent the fastener being operated normally without first releasing it.
Locking arrangements vary between designs. Some are key-operated, while others use different mechanisms depending on the product.
If locking is important, always check the individual fastener specification rather than assuming every traditional-looking fastener provides the same function.
Night-Vent Window Fasteners
Selected casement fasteners incorporate a night-vent position in addition to the normal fully closed position.
This allows compatible window arrangements to be secured in an alternative partially open position for ventilation.
Night-vent designs are available across several traditional patterns, allowing this additional function to be incorporated without necessarily changing the architectural style of the window furniture.
Handed Window Fasteners
Some window fasteners and espagnolette handles are handed, meaning separate left- and right-handed products are required.
Others can operate on either hand.
Always check the individual product description before ordering, particularly with Monkeytail, Shepherd's Crook and other specialist fastener designs.
Espagnolette Window Fasteners
An espagnolette window handle operates a compatible espagnolette gearbox or locking mechanism within the window.
These fittings allow the appearance of the visible handle to be coordinated with more modern multi-point window locking hardware.
Traditional styles such as Monkeytail, Shepherd's Crook and Peardrop espagnolette handles can therefore provide traditional-looking window furniture while operating a modern internal locking mechanism.
Sash Window Fasteners
Traditional sliding sash windows use different hardware from casement windows.
A sash fastener is normally fitted around the meeting rails where the upper and lower sash meet when the window is closed.
Our range includes several traditional sash-fastener styles, including Fitch, Brighton, Quadrant and sash hook fasteners.
Fitch Fasteners
A Fitch fastener uses a rotating fastening mechanism to secure the meeting rails of a sliding sash window.
Narrow versions are particularly useful where the sash has limited space available on the meeting rail.
Lockable Fitch designs are also available where additional control over opening is required.
Brighton Fasteners
A Brighton fastener is a traditional sash-window fitting that draws the meeting rails together as it is tightened.
The distinctive design makes Brighton fasteners particularly suitable for period properties and traditional timber sash windows.
Different profiles are available to suit varying meeting-rail dimensions and architectural styles.
Quadrant Fasteners
A quadrant fastener uses a curved operating arm and provides another traditional method of securing sliding sash windows.
Standard, heavy-duty and narrow-pattern designs are available depending on the window construction and required appearance.
Choosing Fasteners for Narrow Meeting Rails
Older and traditionally detailed sash windows can have relatively narrow meeting rails.
In these situations, the overall base dimensions of the fastener become especially important.
A narrow Fitch, Brighton or Quadrant fastener can provide a more suitable fit while avoiding hardware that appears oversized on the timber section.
Always check the product dimensions before drilling.
Matching Fasteners & Casement Stays
On casement windows, matching the fastener with the casement stay can create a much more coordinated appearance.
Traditional Monkeytail, Peardrop, Reeded and similar ranges often include both fasteners and stays in complementary designs and finishes.
This is particularly effective in period properties where the window furniture is an important visible detail.
Choosing a Window Hardware Finish
Traditional timber windows work particularly well with Aged Brass, Aged Bronze, Beeswax, Black and Pewter Patina.
Polished Brass provides a brighter heritage appearance, while Satin Brass, Chrome, Nickel and Stainless Steel can suit cleaner contemporary joinery.
For exposed or coastal windows, check the individual material and finish carefully. Selected marine-grade stainless-steel products are available, while other decorative finishes may have different environmental limitations.
Frequently Asked Questions
What is a casement window fastener?
A casement fastener is a piece of hardware used to secure an opening casement window against its frame when closed.
It is commonly paired with a casement stay.
What is the difference between a casement fastener and sash fastener?
A casement fastener secures a hinged opening window, while a sash fastener secures the meeting rails of a sliding sash window.
They are designed for fundamentally different window constructions.
What is a lockable casement fastener?
A lockable fastener incorporates an additional locking function that restricts normal operation of the handle.
The locking method varies between products.
What is a night-vent fastener?
A night-vent fastener provides an alternative secured position in addition to the fully closed position, where the window design permits it.
Are window fasteners handed?
Some are and some are not.
Always check the individual product description for left- or right-handed requirements before ordering.
What is a Fitch fastener?
A Fitch fastener is a traditional fitting used to secure the meeting rails of sliding sash windows.
Narrow and lockable versions are also available.
What is a Brighton fastener?
A Brighton fastener is a traditional sash-window fitting designed to secure the upper and lower sash together at their meeting rails.
Should my casement fastener match my window stay?
It does not have to, but matching the style and finish of your fastener and casement stay creates a much more coordinated window-furniture scheme.
Need Help Choosing Window Fasteners?
The correct fastener will depend on your window type, timber profile, available fixing space, required locking function, handing and preferred finish.
Roundtower Hardware supplies a wide range of window fasteners in Ireland, including casement, Fitch, Brighton, Quadrant, sash and espagnolette designs.
Browse the range online or contact our team if you need help matching fasteners with your casement stays or existing window joinery.
