Check who can authorise work and use the appropriate landlord, utility, council or emergency route when needed. This enquiry form is not an emergency dispatch service. Local reporting contacts are below; this enquiry service does not provide emergency dispatch.
Identify the window and fault
Quick answer
Describe whether the window is a sash, casement, tilt-and-turn or another type. State if the key is missing, the handle fails, the lock does not engage or the window itself will not close. A hardware fault and a distorted frame may require different work. Visible markings can help a professional identify parts, but a photograph does not show all concealed details. Ask whether a compatible repair is possible and which parts will be retained, replaced or adjusted.
Make a room-by-room list if several windows are affected. A house can have different systems even where handles look similar. Distinguish windows that fail to close from ones that close but do not secure, and identify any that are used for escape. A survey of those differences helps the business specify compatible work and estimate quantities. It also avoids treating every window as a repeat of the first fault or assuming a replacement handle solves concealed mechanism problems.
Lost keys and broken handles
A missing window key does not necessarily mean the complete window needs replacement. A locksmith may be able to identify compatible keys or replace the relevant hardware, depending on the system and condition. Do not force a locked handle or use improvised tools near glass. Tell the contractor how many windows are affected and whether they share hardware. Where parts have failed, request the replacement specification and an explanation of how the window will close and secure correctly after the work.
Windows needed for escape
Security hardware must not compromise a suitable means of escape. Tell the professional if the window is an escape route or has access needs for a particular occupant. The right arrangement depends on the property and applicable requirements; do not add a key-dependent lock indiscriminately. Secured by Design’s guidance explicitly distinguishes escape windows when discussing key-operated locks. Ask the installer to explain both normal security and emergency use, and make sure authorised occupants understand how to operate the completed arrangement.
Sources: Secured by Design: window security
Restrictors and ventilation
A restrictor, window lock and child-safety device serve different purposes. Specify whether you want security, controlled opening or another function, and ask for a product suitable for the actual window. Do not assume any opening limiter is a security lock or meets a safety requirement. The fit and condition of the frame matter. Where ventilation is needed, explain how the room is used and what opening arrangement is practical. Product selection should follow that assessment rather than an appearance-only choice.
Security that suits the actual window
Essex Police distinguishes sash stops, key-operated locks and restrictors for different window arrangements. Ask which fitting suits the window’s opening action and condition, while retaining necessary ventilation and safe escape. Security advice does not remove the need to consider occupants and the building’s existing design.
The Town Centre appraisal records original timber windows in parts of Braintree. For retained joinery, explain proposed fixings and whether a compatible fitting can avoid unnecessary damage. Check current designation and any required permission before changes affecting significant fabric; a window repair and complete replacement are different proposals.
- Identify sash, casement or another opening arrangement.
- Explain which windows are accessible from outside.
- Agree key access, safe operation and making good.
Sources: Essex Police window security · Town Centre Conservation Area appraisal August 2023 · Listed buildings and mapping · Working on listed buildings
Accessible windows and overall security
Consider windows accessible from ground level, a flat roof or another structure when discussing a home-security review. A lock should be assessed alongside glazing, hinges, frame condition and ordinary use. Ask what benefit the proposed hardware provides and what remains outside its scope. No upgrade guarantees protection against every attempt at entry. Make sure windows are actually secured when appropriate, and keep spare keys in a suitable place rather than beside the glass or labelled with an address.
Useful next steps
Comparing window-lock quotes
What to tell the business
Count the windows and distinguish a missing key, new handle, internal mechanism and frame adjustment. Ask whether the price covers identifying parts, fitting, VAT and a return visit. If a component is no longer available, request an explained compatible alternative rather than an automatic whole-window replacement. Permission checks and joinery repairs may be separate. The number, condition and system determine the scope. Keep product details and the invoice for later maintenance.
- Window type, room and number affected.
- Whether the problem is a key, handle, mechanism or closing fault.
- Any escape-route, accessibility or historic-building requirements.
After the work
Open, close and secure the window with the contractor and check that the agreed function is achieved. Confirm how restrictors or safety features are released when appropriate, without compromising their intended purpose. Keep the keys and instructions accessible to authorised occupants in the planned arrangement. If the window binds or the frame is damaged, lock replacement alone may not settle the problem. Report a recurrence promptly. For a window damaged during a break-in, police evidence guidance may affect how repairs are arranged.
Useful next steps