Quick answer
Composite door handle replacement means matching the PZ92 centre measurement, the correct 8mm spindle length for your door thickness, and a security rating that complements your existing cylinder. Supplied and fitted, expect £45-£160 depending on style, finish and whether you're upgrading security rating at the same time.
Overview
Replacement handles are widely available. Two things to get right: PZ measurement (usually 92mm) and security rating (aim for 2-star if you have a 1-star cylinder).
Symptoms
- Any handle problem beyond a tighten.
Common causes
- Wear, failure, upgrade.
Why homeowners replace a working handle
Not every handle replacement follows a breakage. A significant share of the jobs we do are proactive - homeowners upgrading finish to match new décor, moving to a higher security rating after a neighbourhood break-in scare, or simply wanting a smoother-feeling sprung handle to replace an older unsprung set that's become notchy with age. Understanding your reason for replacing shapes what we'd recommend, since a cosmetic swap has different priorities to a security-driven one.
It's also common after a house purchase - new owners often replace external handles alongside changing the cylinder, partly for a fresh look and partly to be certain nothing about the hardware's history is unknown, even though the two components are entirely independent of each other.
Getting the measurements right
The two measurements that matter are PZ centre and spindle length. PZ92 - 92mm between the keyhole centre and the spindle hole centre - is the standard on the overwhelming majority of UK composite doors, but a small number of older or imported doors use PZ72 or PZ68, and fitting the wrong centre means the keyhole simply won't align with your cylinder. Spindle length depends on door thickness, which on composite doors typically runs 44-48mm but varies by manufacturer and can be thicker on premium ranges.
Getting this wrong doesn't just mean an awkward fit - a spindle that's too short won't fully engage the far side handle or the gearbox follower, and one that's too long can foul the mechanism or protrude oddly. We always measure rather than assume, even on doors we've fitted ourselves originally, since replacement handle stock varies slightly between suppliers.
- PZ92 is standard; PZ72 and PZ68 exist on some older or imported doors.
- Spindle length must match door thickness (typically 44-48mm on composite doors).
- Always confirm sprung vs unsprung before ordering, as they aren't interchangeable in feel or gearbox compatibility.
Matching or upgrading security rating
Handle security ratings run alongside cylinder ratings under the TS007 kitemark scheme, which uses a star system from one to three stars combined across the cylinder and handle. A 3-star cylinder paired with a 1-star handle doesn't achieve the same protection as the combined rating suggests, since the handle itself can be a weak point in a snap or grab attack. If you're replacing a handle anyway, it's worth checking your cylinder's rating and choosing a handle that complements it - typically a 2-star handle alongside a 3-star anti-snap cylinder.
This is genuinely one of the best-value security upgrades available on a composite door, since you're paying the same fitting labour regardless of which handle you choose, and the price difference between a basic and a security-rated handle is usually modest.
Finish choices for Cornwall properties
Standard polished chrome is the most common finish but also the one that shows salt-air wear fastest, developing a dull, slightly pitted look within a few years on coastal properties. Satin and brushed finishes hide this better cosmetically, but for genuine longevity in a coastal or estuary location, marine-grade stainless steel or a PVD-coated finish resists corrosion significantly better over the handle's working life.
We'd particularly recommend this upgrade for any property within sight of the sea, or for holiday lets where a tired-looking handle is one of the small details that affects a guest's first impression of the property.
Fitting process and what to expect
A replacement typically takes 20-40 minutes once the correct part is confirmed. We remove the old handle from both faces of the door, check the spindle and gearbox follower for wear while access is easy, fit the new handle, and test the full lift-to-lock cycle from both sides before finishing. If anything unexpected turns up - a worn gearbox, a cracked backplate cut-out - we'll flag it before proceeding rather than fitting a new handle over an underlying fault.
For remote or let-property owners, we can source and fit without you needing to be present, provided access and a description or photo of the existing handle (or door make, if known) is available in advance.
Matching a set across multiple doors
If you're replacing handles across a front and back composite door, or across several units on a holiday-let portfolio, buying identical sets in one order is worth doing even if the doors were fitted at different times, since finish and lever style can vary subtly between manufacturing batches years apart. It also simplifies future maintenance, since spare parts and spindles become interchangeable across the property.
When a routine replacement reveals a bigger issue
Most handle replacement calls are exactly what they sound like - a straightforward swap for cosmetic or minor mechanical reasons. Occasionally, though, removing the old handle reveals a gearbox follower that's already partially rounded, or a spindle that's bent rather than straight, neither of which would have been obvious from outside. In these cases we'll always show you what we've found before proceeding, since it changes the scope and cost of the job.
This is part of why we prefer to inspect in person rather than quote blind over the phone for anything beyond the simplest like-for-like swap - a five-minute visual check at the door avoids either under-quoting a job that turns out to need a gearbox too, or over-quoting one that's genuinely simple.
Backplate and centre-distance compatibility
Before ordering any replacement we confirm the PZ centre distance - the measurement between the keyhole and spindle hole centres - since the near-universal UK standard is PZ92, but older doors and some European imports use PZ72 or PZ68, and a handle bought to the wrong centre distance simply won't align with the existing keyhole cut-out.
We also check backplate footprint against the door's cut-out, since replacement backplates aren't always interchangeable in size between manufacturers even at the same PZ centre. Where a slightly different footprint is unavoidable - for instance when the exact original range has been discontinued - we'll talk through whether that means a visible difference around the edge of the old cut-out before proceeding.
Choosing hardware for coastal conditions
A replacement is a natural point to reconsider finish for exposure to salt air rather than automatically matching the failed original. If the handle you're replacing has visibly pitted or dulled from coastal exposure, replacing like-for-like with the same standard chrome finish means you're likely to be back in the same position within a few years.
We stock marine-grade stainless and PVD-coated options specifically for this reason, and for properties directly on the coast - harbourside, clifftop, or facing open water - we'd generally recommend stepping up from a standard finish as part of the replacement rather than treating it as an optional extra.
What determines job timescale
Standard finish replacements from van stock are usually completed within a single 30-45 minute visit including testing the full lock cycle. Jobs needing a specific colour, a security-rated handle matched to an existing cylinder, or a discontinued backplate size typically involve a short sourcing delay of a few working days before the fitting visit is booked.
Where we discover additional wear during the visit - a rounded follower or a stiff gearbox, for example - we'll always explain the extra parts and time needed before proceeding, rather than assuming you want the additional work done on the spot without a clear cost first.
Guarantee cover and what to have ready when booking
New handle sets we supply and fit come with a fitting guarantee covering workmanship and a manufacturer's warranty on the part itself, provided the failure isn't due to external force or accidental damage. Keeping a simple record of the replacement date is useful if you need to call on that guarantee later.
When booking, it helps to have the door's approximate age, whether you're within a few miles of the coast, and a note of the existing handle's colour and finish to hand. If you can measure the PZ centre distance yourself beforehand - the gap between keyhole centre and spindle hole centre - that speeds up sourcing the correct part before we arrive.
Typical repair costs in Cornwall
| Work | Typical price | Notes |
|---|---|---|
| Standard finish handle set, supplied and fitted | £75-£110 | Like-for-like PZ92 replacement |
| 2-star security-rated handle set | £95-£140 | Recommended with a 3-star cylinder |
| Marine-grade stainless or PVD finish | £110-£160 | Best for coastal and let properties |
| Multiple matching sets (per additional door) | £65-£100 | Reduced labour when done in the same visit |
Guide prices only — we confirm the cost after seeing the door.
When to call a professional
- For sizing help and installation.
Prevention
- Choose 2-star sprung handles.
