Prices and choosing
Composite Door Prices: What You’ll Actually Pay in 2026
What a fitted composite door costs in 2026: our prices and real jobs, the extras, fitting only, repairs, and what pushes the price up.
In the Midlands, where we fit, our composite doors start at £1,500 for a GRP door and £1,900 for a Rockdoor, fitted, with VAT and taking your old door away. Most doors also need a cill, a low threshold and a letterplate, about £85 for the three, so a plain white Rockdoor front door comes to about £1,985. Our last 60 Rockdoors, side panels and toplights included, averaged about £2,400. Across the UK, the price guides we checked in October 2026 put a fitted composite door at about £1,000 to £2,500, and more with side panels.
The short answer
- GRP composite door
- from £1,500
- Rockdoor
- from £1,900
- Most single Rockdoors we fit
- £1,900–£2,800
- Our last 60 Rockdoors
- about £2,400 on average
Fitted, with VAT and your old door taken away. A cill, a low threshold and a letterplate add about £85 between them. Prices last updated October 2026: they’re estimates, and vary with the specification.
Already bought a door? A good fitter charges from about £350 to fit a standard one (fitting only). Door needs fixing? A repair visit is typically £120 to £200 (repair costs).
We’re Jim and Josh, a family business. We’ve fitted over 3,000 Rockdoors across the Midlands since 2010, and we’ve been Rockdoor Trusted Installers since 2015. Where this guide gives our prices, they come from our own quotes and jobs. Where it gives another make’s price, it’s what the sellers of that make publish, because we don’t fit them.
Our prices at a glance
What our doors cost, fully fitted, with VAT and your old door taken away (October 2026):
| Door | Rockdoor | GRP |
|---|---|---|
| Single door, white, clear glass | From £1,900 | From £1,500 |
| What most single doors come to | £1,900–£2,800 | £1,500–£1,850 |
| With one side panel | £2,200–£2,900 | Add £300–£500 a panel |
| With two side panels | £2,500–£3,400 | Add £300–£500 a panel |
| With a toplight | £2,200–£2,900 | Add £300–£500 |
| Stable door | From £2,350, most £2,400–£2,700 | Rockdoor only |
| French doors | £3,400–£4,000 | Rockdoor only |
A few Rockdoor styles start higher: the Vogue at about £2,000, the Classic at about £2,100, and a pair of Classic French doors from £3,650. The rest, about 95% of them, start at £1,900 and come with clear glass or a privacy glass at no extra cost.
What a fully fitted price includes
A fully fitted price should cover the door, the fitting and the clearing up. Ours covers:
- The door and its frame, made to measure for your opening
- Lever handles, a standard threshold, the multipoint lock, and a 3-star cylinder with its keys
- Fitting by us, never a subcontractor
- Taking away your old door and frame
- Internal trims, and sealing inside and out
- Registration with Certass when your door needs it, Rockdoor’s 10-year guarantee, and an insurance-backed guarantee
- VAT, and no travel charge anywhere we cover
The cill, low threshold and letterplate are listed on the quote, with anything you choose on top: a colour, a glass design, a bar handle. Most doors need the first three, about £85 together.
Check what’s in a starting price
Firms split their prices in different ways. Some charge more for the door and less for the extras; others start low and charge more for each extra, so a cill that’s £15 to £20 with us can be £35 elsewhere. Neither tells you much on its own. What matters is the total for the same door: the same make and style, colour, glass, handle, cylinder, cill, threshold and letterplate, fitted, with VAT. When you have two or three quotes, check each of these:
| Check | What to ask |
|---|---|
| Make and style | The make and the door’s name. “Composite door” alone tells you nothing. |
| Frame | A new outer frame, or the door alone? A door on its own isn’t a fitted price. |
| Colour and glass | Which colour and which glass design, and is each one priced? |
| Handle | Lever handles, usually included, or a bar handle, usually extra? How long? |
| Cylinder | The make and its rating: 3-star at least, ideally rated to the 2024 tests (which cylinder to choose). |
| Cill, threshold, letterplate | In the price, or extra? |
| Old door | Taken away and disposed of? |
| Finishing | Internal trims and sealing included? |
| VAT | Included? Trade prices are often shown without it. |
| Registration | Is the fitter registered with a scheme like Certass or FENSA, for a door that needs it? |
| Guarantees | The maker’s guarantee, and an insurance-backed one in case the installer stops trading. |
Prices by make
The make sets the starting price, because it decides how the door is built. We fit two: Rockdoor, nearly all of what we fit, and GRP doors made by HomeFrame.
Rockdoor, from £1,900
Made to measure in Lancashire around an aluminium-reinforced frame, with the glass sealed into the door (S-Glaze) and Winkhaus multipoint locking. Rockdoors made from 12 October 2026 come with the Apecs AP v3 cylinder, rated to the 2024 tests. Most single Rockdoors we fit come to £1,900 to £2,800. Every option is priced on our Rockdoor prices page, and our Rockdoor features guide explains how one is built.
GRP, from £1,500
A GRP skin over a foam core, in a steel-reinforced frame, with 5-point locking and a 3-star anti-snap cylinder. Most GRP doors we fit cost £1,500 to £1,850. It starts £400 below a Rockdoor and it’s a sound, secure door. The main difference from a Rockdoor is the glass: in most GRP doors it sits in a cassette clipped into the door, where a Rockdoor’s is sealed in. See our GRP composite doors.
Other makes
We haven’t fitted these in the last year, so these are what their sellers publish (October 2026), not our prices:
| Make | Published fitted price |
|---|---|
| Door-Stop (GRP) | From about £1,200 fitted, and about £570 supply only, at one large online seller |
| Comp Door | From about £1,400 fitted, at the same seller |
| Solidor | From about £1,450 fitted, at the same seller. Solidor’s own guide puts composite doors at £1,000 to £3,000 |
| Endurance | We didn’t find a published price |
| National firms | Everest’s own page says from £2,500, with fitting and a 10-year guarantee |
A “from” price usually means a plain door in white, so compare it with a quote for the door you want, fitted, with everything in the checklist above. For how a Rockdoor is built differently from a Solidor or an Endurance door, see Rockdoor vs Solidor vs Endurance.
Extras and what they cost
What each extra adds on our doors (October 2026):
| Extra | Cost |
|---|---|
| Colour, Rockdoor On the outside or the inside, from 14 colours (Rockdoor colours) | £70 |
| Colour, GRP On the outside; the inside and the frame stay white | From £50 |
| Cill By its length, type (a stub cill, or 150, 180 or 225mm) and colour. About 95% of our doors need one | £15–£20 |
| Low aluminium threshold Easier to step over. About 85% of our doors have one | £20 |
| Letterplate A contemporary one £80–£130 | £50 |
| Glass design Satin and simple designs at the lower end, Rockdoor’s 3D designs at the top | £80–£260 |
| Bar handle By its length, up to 1800mm | £100–£180 |
| Knocker A contemporary bullring knocker up to about £120 | £20–£40 |
| Spyhole Made in at the factory, so order it with the door | £15 |
| Cat flap Made in at the factory: cutting one in later voids the guarantee | £70 |
| Side panel or toplight By size and glass. A wider opening may need building work | £300–£500 each |
The colours we fit most at the moment are Agate Grey, Anthracite Grey and Pebble Grey. Darker colours take in more heat in strong sun, so on a door that faces south a lighter one moves less. For more protection, laminated glass with the steel mesh upgrade makes a Rockdoor Secured by Design, with a TS008 letterplate if it has one: see our laminated glass guide.
How the extras add up: a worked example
| Item | Cost |
|---|---|
| Rockdoor front door in white, with a lever handle and standard threshold | £1,900 |
| Anthracite Grey instead of white | £70 |
| Haze glass design | £260 |
| 1200mm stainless steel bar handle | £120 |
| Low aluminium threshold | £20 |
| White cill | £15 |
| Letterplate | £50 |
| Total, fully fitted, with VAT | £2,435 |
Add a spyhole and a knocker and it passes £2,500. Add a side panel and it gets close to £3,000.
Fitting only, supply only, and fitting it yourself
Fitting a door you’ve bought
We don’t fit doors that someone else has supplied. We like to deal with everything from start to finish, the door and the fitting, so we can stand behind both.
If you’ve bought a door, find a fitter who has fitted plenty of composite doors and has a good name locally. A good one will charge from about £350 to fit a standard door. Some price guides quote £150 to £400, and you’ll find cheaper, but you’re paying for experience: a composite door that isn’t set straight and plumb won’t seal or lock properly, and an older house takes longer.
Buying supply only
We supply Rockdoor and GRP doors for delivery across mainland UK, for your own fitter or the trade: a Rockdoor from about £1,500 supply only. Say “supply only” when you send your photos. Before you buy one, check three things:
- The guarantee. A maker’s guarantee can depend on who fits the door, so read its terms first.
- Building Regulations. In England, a replacement door must meet an energy limit: 1.4 W/m²K, or a Doorset Energy Rating of band B, or band C if more than 60% of it is glass (Approved Document L). A door that’s more than half glass has to be signed off as well. A fitter registered with Certass, FENSA or a similar scheme does that for you; otherwise your council’s building control does, for a fee. A door that’s half glass or less needs no sign-off (the Building Regulations, Schedule 4).
- The measurements. A door made to measure can’t be altered once it’s made. We’ve been called out to doors made too big for their opening, which can never be set straight and plumb.
Changing the cylinder yourself? Our guide to measuring and swapping a cylinder shows how.
Repair costs
We sometimes go out to repair a door we didn’t fit. It’s typically £120 to £200, depending on whether parts are needed, and it can be more. We’re careful about taking on other people’s work, because sometimes a door was fitted so badly that it has to come out and go back in properly, and sometimes it was made too big for its opening, so it can never be set straight and plumb.
Plenty of problems are small enough to sort yourself:
- A stiff, worn or broken cylinder: a new one costs about £40 to £80, and most people swap it in 10 to 15 minutes (how to measure and swap one).
- Draughts round the door: the Q-Lon seals usually last 8 to 12 years, and they can be replaced (Rockdoor parts and what they fix).
- A door that has dropped or catches: a Rockdoor’s hinges adjust, so it can often be set right without new parts.
- A broken handle, letterplate or hinge: Rockdoor spares are in our shop.
- Misted glass: a Rockdoor’s sealed glass unit has a 10-year guarantee, so ring your installer first (what the Rockdoor guarantee covers).
If the door, frame and lock are sound, a repair costs far less than a new door. A new one makes sense when the frame is rotten or twisted, or the door can’t be set straight.
Fitting day, and how long it takes
From order to fitting it’s about seven weeks. We survey within a week of you saying go ahead, Rockdoor take three to four weeks to make your door, and because we're busy, your fitting day is usually two to three weeks after that.
On the day, we lay dust sheets in the hallway and round the door, and extra ones if it’s raining. We take the old door off its hinges, unscrew the frame from the brickwork and take everything away, so you don’t need a skip. The new frame goes in level and plumb, packed where it needs it, and is fixed through the frame into the brickwork with frame fixings, never with expanding foam alone. Foam then fills the gap for insulation, and silicone seals the outside against the weather. The cill goes under the threshold, and the trims go on inside.
We test the door before we go: opening, closing and locking it, from inside and out, with every key. Then we show you how it all works. A standard door takes us about five hours. An older house takes three to five hours longer, and side panels or a widened opening can take up to ten.
One thing we never do is reuse part of the old door. Every door gets a new frame, cill, threshold, hardware and lock: old parts bring old wear with them.
What changes the price
An older house
Victorian, Edwardian and pre-war houses take longer. Their timber frames are often thick and painted over many times, so we take them out in pieces to save the plaster round them, which after decades can be loose. There’s architrave to work round, reveals that have settled out of level, and sometimes a light switch, doorbell or alarm sensor near the frame. Old doors often sit on deep timber cills, 50 to 60mm or more against a modern 30mm cill, so we build the cill up to fit a low threshold and still clear the floor inside.
About nine in ten of our doors take standard 25mm trims inside. Fewer than one in a hundred need a 90mm trim, usually on an old house where the walls are well out of true. All small things, but they add up: on an older house, expect about £100 more in materials and £150 to £300 more in labour than on a newer detached house, so roughly £250 to £400 in all. We see it at the survey, so it’s in your quote and not a surprise on the day.
Side panels, toplights and wider openings
Each side panel or toplight adds £300 to £500, and the cill gets longer to match. If the opening has to be widened for them, that’s building work with a new lintel and building control, and it can add £500 to £1,500 or more.
A front or a back door
The same door costs the same at the front or the back, as long as the fitting is the same. If one opening is harder, with an old thick timber frame, plumbing or wires to work around, or more trims and silicone, it can take twice as long, which adds to the price. Back doors usually come to less, because people choose a plainer one: a plain colour, simple or no glass, lever handles. Replacing both at once usually costs less than two separate jobs. For the front, see our composite front doors.
Where you live
London and the South East cost more, mostly in labour: the price guides we checked put it at about a fifth more. We fit across Derbyshire, Nottinghamshire, Leicestershire, Staffordshire, Warwickshire and the West Midlands, and north to Sheffield, with no travel charge anywhere we cover. Find your town in the areas we cover, or see doors we’ve fitted near you in Derby, Nottingham, Leicester, Burton upon Trent, Coventry and Warwick.
The energy rating
Every replacement door in England has to meet the energy limit above. Most Rockdoor styles are rated A with clear backing glass, and a few with more glass, like the Vogue and the Classic, are rated B. Both pass, and on the same make a better rating rarely costs more.
Four of our jobs, and what they’d cost today
Four doors from our gallery, all on newer houses and simple fits, with the year we fitted each and what the same door costs now. The French doors were a one-off pair, so they sit above the usual range:
| Door | Fitted | The same door today |
|---|---|---|
| Rockdoor Newark Bright Star, Anthracite Grey, Hilton | 2023 | about £2,350 |
| Rockdoor Vermont Continuity, Light Oak, two side panels, Chellaston | 2025 | about £3,300 |
| Rockdoor Vermont, Agate Grey, two side panels and a bar handle, Leicester | 2024 | about £3,400 |
| Rockdoor Classic French doors, Rosewood, two side panels, Kenilworth: a one-off pair | 2024 | about £4,500 |
Composite, uPVC or timber?
On price, uPVC comes first, composite next, and timber varies the most. The price guides we checked in October 2026 put a fitted uPVC front door at roughly £800 to £1,500, a composite one at about £1,000 to £2,500, and a timber one anywhere from about £1,000 to over £4,000, depending on the wood and the maker.
For the extra over uPVC, a composite door is stronger, better insulated and keeps its colour without painting. Timber looks lovely, but it needs sanding and painting every few years and moves with the weather. For a front door, we think composite is the best mix of the three.
Getting an accurate price for your door
Send us two photos of your door, inside and out, and tell us what you like. We’ll reply within 24 hours with a design and a fixed price, with no home visit needed to quote. If you go ahead, a £100 survey deposit, which comes off your final balance, books a survey within a week to confirm the measurements. Wherever you get your quotes:
- Get two or three, for the same door, and go through the checklist above.
- Ask for the total, fitted, with VAT, not a monthly figure.
- Check the installer: registered with a scheme like Certass or FENSA, approved by the maker (Rockdoor list their Trusted Installers on their own site), and offering an insurance-backed guarantee.
- Take your time. A fair price will still be there next week.
Why the cheapest quote can cost more
A door’s guarantee runs through its installer, so if the installer stops trading, it can stop with them. That’s why we register every door that needs it with Certass and give an insurance-backed guarantee. The fitting matters as much: a door that isn’t packed, fixed and sealed properly will be draughty, let water in or lock badly within a few years, and none of that shows on the first day. Our Rockdoor guarantee guide explains what can void a guarantee.
Be wary of a price that drops while the salesperson is still in your kitchen. A discount for signing today means the first price was never the real one.
Finance
We don’t offer finance: fewer than two in a hundred of our customers have ever asked. If you’re offered it elsewhere, ask what the door costs without finance and compare that, then check the APR and the total you’ll repay. At 12.9% APR over eight years, a £2,400 door costs about £39 a month, and about £3,770 in all.
Composite door prices: questions
What does fitting a composite door cost?
Supplied and fitted by us, from £1,500 for a GRP door and £1,900 for a Rockdoor, with VAT and your old door taken away. If you already have a door, a good, experienced fitter charges from about £350 for a standard one. We don’t fit doors someone else has supplied.
How much do composite door repairs cost?
A repair visit is typically £120 to £200, depending on whether parts are needed, and it can be more. Some repairs you can do yourself: a new cylinder costs about £40 to £80 and takes most people 10 to 15 minutes to swap.
Is a composite door worth it over uPVC?
For a front door, we think so. It’s stronger, better insulated and looks more like a timber door, without the painting. For a back door that few people see, uPVC can be enough.
How long will a composite door last?
Rockdoor guarantee the door, frame and glass unit for 10 years, and a well-fitted door lasts long after that. Expect to replace the seals after 8 to 12 years, and lubricate the lock every six months with graphite or another non-silicone lubricant, never WD-40.
How long is the wait for a composite door?
About seven weeks from order to fitting, most of it Rockdoor making your door, which takes three to four weeks. The fitting itself takes about five hours for a standard door.
Do composite doors warp?
Every composite door moves a little with heat, most of all a dark one facing south. Rockdoor’s aluminium-reinforced frame keeps it small, and they guarantee their doors won’t bow by more than 3mm. Always lift the handle as you close the door, so all the locking points go in.
What lock should a composite door have?
A 3-star anti-snap cylinder at least, and if you’re buying one now, one rated to the 2024 tests. We recommend the Apecs AP v3 for any Rockdoor: our euro cylinder comparison explains which we recommend for which door.
Do I need planning permission to replace my front door?
Usually not, for a house, if the new door looks similar to the old one. A flat or maisonette usually needs permission, a listed building needs listed building consent, and an Article 4 direction or a planning condition can take the right away, so check with your council (Planning Portal). We’ve replaced four doors on a row of seven period houses in a conservation area, each Rockdoor matched to the original.
Get a price for your door
Ready for a price? Two photos of your door and the style you like are all we need: use the form below. Want to try styles and colours first? Use our Rockdoor door designer.
