Repairs & Security
Physical Home Security Upgrades in Windsor
We upgrade door cylinders, keep plates, frame reinforcement and window locks across Windsor, Eton and the surrounding SL4 area. No alarms, no CCTV, no monitoring contracts — hardware only, assessed and quoted in writing before any work starts.
- Core Windsor & SL4 coverage
- Experienced carpenter
- Fully insured
- Physical security only
Our Approach
Hardware, Suited to Windsor's Housing Stock
Windsor mixes Georgian townhouses in the streets nearest the castle with Victorian and Edwardian terraces through Clewer and Dedworth, large detached houses around the Great Park, and newer developments toward Old Windsor and Datchet. Each brings a different starting point for a security assessment, and we check the door or window in front of us rather than apply a standard package.
Most forced entries succeed at the frame, not the lock. A good cylinder in a softwood frame with a short keep plate will give way at the timber long before the lock is defeated. On Windsor's older properties, where original frames are often worth keeping, reinforcing the frame and lengthening the fixings is usually the more effective and less disruptive upgrade than a new door. Some insurers specify locks meeting BS 3621 on final-exit doors; we tell you honestly whether yours already does.
The larger properties around the Great Park, some with several entrances and extensive glazing to the garden, often need a wider assessment covering patio and French doors as well as the front and back door. We carry out physical security upgrades only — carpentry and hardware, not electronics — assessed and quoted in writing before any work starts, with a free assessment visit and a fixed-price written quote within two working days.
What This Looks Like
Security Hardware, Fitted Properly
What We Upgrade
Security Hardware We Fit in Windsor
Door Cylinders and Locks
Worn or low-grade euro cylinders replaced with anti-snap, anti-pick, anti-drill cylinders, matched to the lock case the door needs.
Keep Plates and Frame Reinforcement
Reinforced keep plates that spread load into sound timber, longer screws reaching the structural frame, and steel reinforcement on split or thin sections — especially relevant on Windsor's Georgian and Victorian timber doors.
Window Locks
Key-operated window locks fitted to timber casement and sash windows on the ground floor and anywhere accessible from a flat roof or extension.
Multipoint Locking Mechanisms
Worn gearboxes replaced, cylinders upgraded, or new multipoint mechanisms fitted to doors that currently rely on a single-point lock, where the door and frame are suitable.
Letterbox and Hinge Security
Internal letterbox guards, cowls and restrictor plates, plus hinge bolts on outward-opening doors so they cannot be lifted off even if hinges are exposed.
Patio and French Door Security
Additional locking points, anti-lift blocks on sliding tracks, and upgraded multipoint hardware on French doors — common on the larger detached properties around the Great Park and the newer developments toward Datchet.
Scope
What We Leave to Other Specialists
This page covers physical security only. We do not supply, fit or monitor burglar alarms, and we do not supply, fit or monitor CCTV. We do not offer any connected monitoring contract or subscription service of any kind.
If you want electronic monitoring alongside the physical hardware we fit, a dedicated alarm or CCTV installer is the right person for that part of the job. We are happy to work alongside one — for example, reinforcing a frame before a sensor or camera bracket is fitted to it.
We also do not fit smart locks tied to an app, a Wi-Fi hub or a monitoring subscription. Mechanical cylinders, lock cases and multipoint hardware are within scope; connected devices are not.
How It Works
From Assessment to Sign-Off
Assessment
A free site visit to your Windsor property to check your existing doors, windows, locks, keeps and frame condition.
Recommendation
We explain what, if anything, needs upgrading and why — including telling you plainly if your current hardware is already adequate.
Written Quote
A fixed-price quote within two working days, itemising each piece of hardware.
Fitting
Hardware fitted to the agreed specification, with frame reinforcement carried out properly rather than just screwed into existing fixing points.
Sign-Off
Every lock, keep and hinge checked before we leave. Keys handed over and operation demonstrated.
Get Started
Request a Security Assessment in Windsor
Tell us what you would like assessed — a front door, patio doors, ground-floor windows, or the whole house — and we will arrange a free, no-obligation visit.
Prefer our standard quote form? Request a free quote instead.
Pricing
What Does a Security Upgrade Cost in Windsor?
These are indicative all-in figures covering hardware and fitting, based on recent Berkshire and South Buckinghamshire projects. Exact pricing depends on door and window condition, hardware specification and how many openings are involved — the free assessment gives you a written figure.
| Security Upgrade | Typical Range (all-in) |
|---|---|
| Euro cylinder upgrade, single door | £85 – £160 |
| BS 3621 lock case, single door | £150 – £320 |
| Keep plate & frame reinforcement, per door | £120 – £280 |
| Window lock upgrade, per window | £60 – £140 |
| Multipoint mechanism replacement, per door | £220 – £450 |
| Letterbox guard & hinge bolts, per door | £80 – £180 |
| Patio / French door multipoint upgrade | £250 – £550 |
| Full ground-floor upgrade (doors + accessible windows) | £700 – £1,600+ |
Ordinary quotations are free. A formal, written insurance reinstatement estimate is a separate paid service — see our Insurance & Reinstatement Estimates page for details.
Common Questions
Home Security Upgrades in Windsor — FAQs
Do you cover Windsor and Eton for security upgrades?
Yes. Windsor and Eton are part of our core SL4 working area alongside Old Windsor, Clewer and Dedworth, and physical security upgrades are a regular part of our work across the whole area, including the larger properties near the Great Park.
Do you fit alarms or CCTV as part of a security upgrade?
No. We carry out physical security upgrades only — locks, cylinders, keep plates, frame reinforcement and window locking hardware. We do not supply, fit or monitor alarms, CCTV or any connected monitoring service.
What is BS 3621 and does my Windsor front door need it?
BS 3621 is a British Standard for thief-resistant lock cylinders and cases. Some insurers specify BS 3621 locks on final-exit doors, so it is worth checking your policy wording. We can supply and fit cylinders and lock cases that meet the standard.
Can you upgrade security on a Georgian townhouse near the castle without replacing the door?
In most cases, yes. Cylinders, lock cases, keep plates and window locks are hardware that fits into the existing door or window. We only recommend replacing the door or frame itself where the timber is too decayed or thin to hold reinforced hardware securely — something we check carefully on the taller, older Windsor doors.
How much do home security upgrades cost in Windsor?
A single cylinder upgrade typically costs £85–£160. Keep plate and frame reinforcement runs £120–£280 per door. Window lock upgrades are £60–£140 per window. A full ground-floor upgrade is typically £700–£1,600. The free assessment gives you an exact, written figure.
How long does a typical security upgrade take?
A cylinder or lock swap on a single door is usually finished within the same visit. Keep plate and frame reinforcement work takes half a day per door. A full ground-floor upgrade covering several doors and windows is typically completed within a single working day.
Is the assessment visit free?
Yes. The security assessment and the written quote that follows it are both free, with no obligation to go ahead.
Can you tell me honestly if my current locks are good enough?
Yes — that is the starting point of every assessment. We check your existing cylinders, lock cases and frame condition and tell you plainly what, if anything, needs upgrading. We would rather say nothing needs doing than sell an upgrade you do not need.
Related Services
Often Paired With Security Upgrades
Window Repairs in Windsor
A window with a swollen frame or worn handle often needs a repair before a lock upgrade will sit properly.
Burglary Damage Repairs in Windsor
If a frame has already been forced, we restore it first, then upgrade the hardware so the same point of failure is not repeated.
Roof Carpentry in Windsor
Structural roof carpentry for Windsor extensions and loft conversions.
Repairs & Security Hub
The full range of repairs and security services we offer across Berkshire and South Buckinghamshire.
Request a Free Security Assessment in Windsor
Tell us about your doors and windows and we will arrange a free, no-obligation assessment, with a fixed-price written quote to follow.
We also carry out home security upgrades across Berkshire and South Buckinghamshire: