French Doors in Cardiff
For city professionals, young families in the suburbs, landlords with HMOs near Cathays Park in Cardiff, French doors aren't a vanity upgrade — they're the single biggest fix for heritage-friendly frame profiles in conservation streets. We supply outward or inward-opening pairs as standard, with matching sidelights and top-lights available on request. 20+ years on the frame, 10-year hinge life before service, which matters when the next Cardiff Bay, Capital Business Park car park gets built and your elevation faces it head-on.
- Council
- Cardiff
- Postcodes
- CF10, CF11, CF14, CF23, CF24, CF5
- Main route
- A48
- Nearest town
- Penarth (4 mi)
Based down the road from Cardiff
10 miles from base, A470 the whole way — Cardiff installs run as smoothly as our home patch. We know the A48 corridor inside out.
07375 533723Why Cardiff homeowners choose us
- 1Free site survey
- 2Written quote within 24h
- 3Frames built to spec
- 4Single-day install
- 5Snag visit at 1 week
How we build French doors
Opening squared and levelled, cill fixed on stainless packers, both leaves hung and adjusted so the passive leaf closes flush without slam.
- • reinforced uPVC or thermally broken aluminium
- • toughened low-E double-glazed panes
- • multi-point hook-lock system
- • flag hinges rated to 100kg leaf
Guarantee: 10-year product, 2-year fitting.
Recent work near Cardiff
CF83 · May 2026New front door fittedRosac fitted our new composite door — beautiful finish, friendly lads and tidy from start to finish. House already feels warmer. Highly recommended.
CF37 · April 2026Full house of windowsHad every window in the house replaced. The team were punctual, polite and the quality is brilliant. Genuinely couldn't be happier.
CF63 · March 2026Back door & patio doorsReplaced our back door and patio doors. Great communication, fair price and excellent workmanship. Will be using them again for the windows.
French doors across Cardiff
- Cyncoed
- Llanishen
- Roath
- Cathays
- Penylan
- Whitchurch
- Pontprennau
- Rhiwbina
- Heath
- Grangetown
- Splott
- Canton
- Llandaff
- Radyr
- Gabalfa
- Ely
- Adamsdown
Owner occupiers replacing one door or one window
Buying French doors as owner occupiers replacing one door or one window
Most enquiries at this size start with one specific fault. This page covers what that fault usually turns out to be locally, what the fix costs relative to a full replacement, and when it is worth waiting and doing more openings together.
What this buyer actually needs from us
- A short arrival window rather than a whole day waiting in
- Making good inside so there is no decorating job left behind
- The frame drainage caps face outward and are set proud enough that they don't clog with a season of rainwater.
- The client is left with the manufacturer's paperwork in a labelled envelope, not a folded receipt tucked inside a drawer.
The same ten year product guarantee applies whether you buy one unit or twenty
What we typically find on French doors surveys around here
- ·The georgian bar between panes on one unit has slipped off its top spacer and is sitting diagonally inside the sealed cavity.
- ·One casement's friction stay has been swapped for a random spare that doesn't match the arm geometry.
- ·Original security stickers from the installer are still on the bottom of the panes, twenty years later.
- ·The internal glazing bead sits proud of the frame by 1.5mm, so the seal at the top corner has failed first.
- ·The stay arm on the top vent has bent and no longer sits into its rest bracket cleanly.
- ·Handles on the ground-floor windows have been swapped for cheap replacements that no longer match the espag rod.
- ·The trickle-vent screw covers are missing and the internal chamber has filled with cobweb.
- ·The old aluminium sliding door has grit in the track that has worn the roller wheels to elliptical.
- ·Every casement in the property opens with a firm tug on the second click — the friction stays are seized.
- ·One handle turns freely through 180° with no engagement — a snapped internal cam.
- ·The gasket at the vent has perished and pulled away from its channel in two-inch sections.
- ·The gap under the front door has been carpet-strip filled from inside — the exterior weather bar is missing.
- ·The frame colour has gone chalky on the sun side and stayed factory white on the shaded elevation.
- ·The kitchen window has a defrost line across the low-e coating — argon gas long gone.
- ·Every kitchen window handle has been replaced twice in ten years — a sign the espag is going, not just the handle.
- ·There is a live crack running from the top corner of a bay-window pane where the frame has been out of square since installation.
Why residents are booking French doors right now
- ·The owner has watched a neighbour's crew leave debris behind and wants a written cleanup expectation on the quote.
- ·The owner wants the job to finish clean — no leftover offcuts in the skip on the drive, no sealant on the render.
- ·The resident wants the sliding door to open with a fingertip after ten years of use, not two hands after two.
- ·The buyer wants the whole job done by one team who own the outcome — not designed in one place and fitted in another.
- ·The homeowner is selling the property and only wants to replace what visibly holds the survey back.
- ·The owner is done paying to service failing 90s uPVC every couple of years and wants the whole set replaced together.
- ·The buyer is buying the property specifically for the garden and wants a bi-fold that opens the whole rear elevation.
- ·The owner is having a kitchen refit next month and wants the patio door in first so the tiler works to a fitted threshold.
- ·The resident has already had one failed installation and wants to know exactly how this one will differ.
- ·The resident is fitting a home cinema in the front room and needs the windows to be a full acoustic upgrade, not a nominal one.
- ·The resident is on a listed street and wants a front door that will pass Article 4 first time.
- ·The resident wants the frames to survive a specific paint colour on the render for at least a decade.
- ·The owner is done with rattling frames in a westerly and wants a demonstrable acoustic upgrade, not a numerical claim.
- ·The homeowner is expecting twins and wants the room-to-room noise transfer down before the arrival.
- ·The owner wants the master bedroom quiet enough for a night-shift partner to sleep past 11am.
- ·The homeowner has quotes for a new kitchen next spring and wants the patio doors in before those trades arrive.
How our fitters actually do the work
- ·The frame drainage caps are proven flowing before the beading goes in — a bottle of water down the outer chamber.
- ·The door hinges are set with the correct rise before the frame is finally fixed — retro-adjustment on cheap hinges is limited.
- ·The crew leaves the client with a printed adjustment card so the multipoint keeps can be re-set six months on without a callout.
- ·The multipoint hooks are lightly greased after fitting, before the door is closed for the first time.
- ·The window board is scribed to the plaster line, not left with a caulked gap that shows in raking light.
- ·The old handles are offered to the client before being binned — sometimes a chrome D-handle finds a shed door life.
- ·New frames sit on hardwood packers, not plastic offcuts — plastic creeps under load, timber does not.
- ·The multipoint keeps get a smear of grease inside the pocket before the door is closed for the first time.
- ·The frame is protected with a low-tack tape at any point a tool might scrape it during the fitting hour.
- ·Fixings are set at the manufacturer's spacing, not evenly spaced by eye — the corner loads matter.
- ·The perimeter foam goes in in two passes so the second lift meets the first without a void in the middle.
- ·The bay assembly is squared with a laser diagonal, not a tape measure and eye.
- ·The trickle vent chamber inside the frame is proven clear with a torch before the outer cap goes on.
- ·The reveals are photographed on arrival so any pre-existing damage is on record before the crew touches them.
- ·The old frame comes out in one piece where possible so the reveal detail is not chased through with a demolition bar.
- ·Ground protection sheet goes down before the old frame comes out — not after the mess starts.
FAQs — French doors in Cardiff
How long does a French doors install take in a Cardiff property?+
Single day on a like-for-like swap, 2 days with a new lintel. Most of the Edwardian and Victorian bay-fronted houses in Cathays and Roath we see in Cardiff fit our standard schedule with no surprises.
What colours and finishes are available for French doors?+
outward or inward-opening pairs; matching sidelights and top-lights available; white, anthracite, cream or dual-colour. We bring physical samples to the quote so you can see them against your Edwardian and Victorian bay-fronted houses in Cathays and Roath in real light.
Why replace the whole set rather than one-by-one in a Cardiff home?+
Because a small back door that blocks the view of the garden and only opens one way rarely stays isolated — once one unit goes, the rest follow within a few years. Doing it once means matching frames across the elevation and one trip for our team into CF10.
Do you cover Penarth and Caerphilly as well?+
Yes — Penarth is roughly 4 miles from Cardiff, Caerphilly about 7. Same team, same prices, same guarantee.
What guarantee do I get when you fit French doors in Cardiff?+
10-year product, 2-year fitting. We're insured to work right across Cardiff Council's area, and you have one named contact from quote to snag.
Is it cheaper to repair the existing frame?+
Often, yes. Hinges, handles, gearboxes and single sealed units can all be replaced without touching the frame. We quote the repair first when the frame itself is sound.
Will one new unit match the older frames already fitted?+
We match profile, colour and hardware finish as closely as the current stock lines allow, and we will tell you honestly at survey where an exact match is not possible.
Just need the one replaced? in Cardiff
Send a photo of the opening and we will tell you whether it is a repair or a replacement, and what each costs, before anyone visits. French doors for Cardiff and the Cardiff Council area, single day on a like-for-like swap, 2 days with a new lintel, with a written price inside 24 hours.
Summary — French doors in Cardiff
A small back door that blocks the view of the garden and only opens one way won't fix itself, and putting it off through another winter in Cardiff just costs more in heating, particularly with heritage-friendly frame profiles in conservation streets working on the elevation every week. A 20-minute call gets the survey on the diary. On French doors specifically: a small back door that blocks the view of the garden and only opens one way, single day on a like-for-like swap, 2 days with a new lintel, 10-year product, 2-year fitting.
Faults we fix before recommending French doors
A door that needs lifting, shoving or a second attempt to lock is warning you before the gearbox fails completely.
A composite slab that catches on the frame has almost always moved at the hinges, and hinges are adjustable in three planes.
A sliding door that fights you is nearly always rollers and track debris, not a dead door.
Most break-ins through glazed openings exploit the cylinder or the keeps, both of which are upgradeable in an afternoon.
Let's make your house feel more like home.
Fill in a few details and we'll come back within 24 hours with a clear quote — no callout fee, no pressure.