Casement Windows

We supply a wide range of specialised casement window security hardware available in a variety of sizes, materials and finishes. Carefully designed to provide full security whilst adding a stylish touch to your property, our casement window furniture is manufactured to PAS24 standard and backed with a 10 year guarantee.

From espagnolette window handles and hinges to shoot bolt locks, friction stays and spare parts, at ERA you’ll find everything you need to upgrade your casement window security.

Casement windows are the most widely installed window type across the UK, found in the vast majority of residential properties from modern new builds to period homes.

Their side-hung or top-hung format, opening outward on a hinge, makes them versatile and practical — but like any opening in a building's envelope, they represent a potential security vulnerability if the hardware is not correctly specified.

At the core of any casement window specification is the handle.

ERA's casement window handle range spans four distinct formats — espagnolette handles, traditional timber window handles, cockspur handles and aluminium fork drive handles — giving fabricators and installers the right handle type for every window profile and system they work with.

Within the espagnolette range alone, styles include Connoisseur, Architectural, Maxim, Monkey Tail and Tear Drop, covering everything from clean contemporary aesthetics to traditional period-appropriate designs.

Locking handle options — including key-locking versions — are available across the range for applications where additional window security at handle level is required.

Window locks are the next critical element of the casement specification.

ERA's lock range includes double cam locks, offset twin cam locks, espagnolette locks and shootbolt locks, each suited to different window systems and security requirements. Shootbolt locks — including ERA's Extreme and Extreme3 ranges — are the high-security choice, driving bolts into keeps in the top and bottom of the window frame simultaneously for multi-point locking performance that meets PAS 24 requirements.

For applications where a cam lock is appropriate, ERA's double cam and offset twin cam options provide reliable, well-engineered locking that integrates cleanly with the window's espagnolette or cockspur handle system.

Window hinges and friction stays are the mechanical backbone of any casement window installation.

ERA's range covers standard friction stays, stormproof hinges, aluminium hinges, hingeguards and hinge bolts, and window restrictors — each serving a specific functional purpose in the overall window specification.

Friction stays control the opening angle and hold the sash in position; stormproof hinges suit windows with a stormproof rebate profile; hingeguards and hinge bolts reinforce the hinge side of the window against attack; and restrictors limit the opening angle for safety — particularly important on upper-floor windows in properties occupied by children or vulnerable adults.

Additional window security products extend ERA's casement offering beyond the primary hardware components to cover the supplementary security devices that many projects and clients require.

Sash jammers and packers, snaplocks and keys, swing locks and locking catches all provide targeted additional resistance to window forced entry — either as standalone security improvements on existing windows or as part of a more comprehensive new installation specification.

These products are particularly relevant for properties in higher-crime areas, rental properties and social housing schemes where supplementary window security is frequently specified or required.

Ventilation products round out ERA's casement window range with trickle vents designed to provide background ventilation through the window frame without compromising security or weatherproofing.

Modern building regulations increasingly specify background ventilation in new build and refurbished properties, and ERA's trickle vent range provides a straightforward, compliant solution that integrates neatly into the casement window frame.

Frequently Asked Questions

What casement window hardware does ERA stock?

ERA stocks a comprehensive range of casement window hardware including window handles across espagnolette, cockspur, traditional timber and aluminium fork drive formats; window locks including double cam, offset twin cam, espagnolette and shootbolt types; window hinges and friction stays including standard stays, stormproof hinges, aluminium hinges, hingeguards and restrictors; additional window security products including sash jammers, snaplocks, swing locks and locking catches; ventilation products; and spares and accessories.

All products carry a 10 year mechanical guarantee and the range is manufactured to PAS 24 standard.

What is the difference between an espagnolette handle and a cockspur handle?

An espagnolette handle operates a multi-point locking mechanism within the window frame — when the handle is turned, it drives locking bolts or cams into keeps around the frame perimeter, providing secure multi-point closure.

It is the most common handle type for modern PVCu and timber casement windows.

A cockspur handle is an older format, characterised by its distinctive spur-shaped lever that hooks over a striker plate to hold the window closed.

Cockspur handles are most commonly found on older PVCu windows and some traditional timber windows, and ERA stocks cockspur handles for both new installations and replacement applications on windows where this format is already in use.

What casement window handle styles does ERA offer?

ERA's espagnolette handle range covers five main styles — Connoisseur, Architectural, Maxim, Monkey Tail and Tear Drop — available in locking and non-locking versions, left and right hand configurations, and inline and offset backplate formats.

The Monkey Tail and Tear Drop ranges are designed with a traditional aesthetic particularly suited to heritage, period and conservation properties.

The Connoisseur and Architectural ranges suit contemporary and modern window styles.

The Maxim range, including the Universal Multi Spindle version, provides a versatile option for fabricators working across multiple window profiles.

Key-locking versions are available across the range for enhanced security at handle level.

What types of window locks does ERA supply for casement windows?

ERA's casement window lock range covers four main lock types. Shootbolt locks — including the ERA Extreme and Extreme3 — drive bolts into keeps at the top and bottom of the frame simultaneously, providing multi-point locking performance suited to PAS 24 compliant installations.

Double cam locks and offset twin cam locks engage cam mechanisms into keeps in the frame to provide secure closure.

Espagnolette locks form part of the window's espagnolette system and work in conjunction with the handle to provide the primary locking function.

The appropriate lock type depends on the window system and profile being specified, and ERA's technical team can advise on the best combination for specific installations.

What is a window restrictor and when is one required?

A window restrictor is a device that limits how far a casement window can be opened, typically to a maximum of 100mm for child safety compliance.

Restrictors are required on any opening window at height where there is a risk of a child or vulnerable person falling through the open window — this is a standard requirement in residential properties, schools, care homes and commercial buildings.

ERA's restrictor range includes safety locking restrictors that can only be overridden with a key or tool, ensuring the restriction cannot be removed by a child.

Fitting a restrictor does not prevent the window from being fully opened when required — it simply requires the deliberate engagement of the override to do so.

What is a hingeguard and why is it important for window security?

A hingeguard is a security device fitted over the exposed hinge of a casement window to prevent the hinge pin from being removed or the hinge from being levered off as a method of forced entry.

The hinge side of a casement window is a vulnerability that is sometimes exploited by intruders — removing or defeating the hinge allows the window to be pulled open even when the locking mechanism on the handle side is fully engaged.

ERA's Elite Hingeguard fits over the existing hinge and resists removal and attack, closing this security gap as part of a comprehensive window security specification.

Hingeguards are particularly relevant for ground floor and easily accessible windows.

What additional window security products does ERA stock for casement windows?

ERA's additional window security range for casement windows includes sash jammers and packers, snaplocks and keys, swing locks and locking catches.

Sash jammers are surface-mounted devices that prevent the window from being opened from outside even if the primary lock is defeated, providing a secondary layer of resistance.

Snaplocks provide key-operated additional locking. Swing locks and locking catches offer additional fixing points that supplement the primary handle and lock mechanism.

These products are frequently specified for ground floor windows, rental properties, social housing and properties in higher-crime areas where enhanced window security beyond the primary lock is required or recommended by insurers.