New composite doors for Cardiff homes
Most of our composite doors jobs in Cardiff start with the same call: "old timber and rotten 90s uPVC front doors that leak heat, jam in winter and fail break-in standards". Around here that usually means a Edwardian and Victorian bay-fronted houses in Cathays and Roath where the original frames have given up. We work right across CF10 and CF11 and CF14 and CF23 and CF24 and CF5 — Cyncoed, Llanishen, Roath and the surrounding streets — typically arriving via A48. Old frame stripped on the day, new outer frame fitted plumb to the brick reveal, threshold sealed with EPDM and silicone.
Free quote in Cardiff
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.
Composite doors across Cardiff
- Cyncoed
- Llanishen
- Roath
- Cathays
- Penylan
- Whitchurch
- Pontprennau
- Rhiwbina
- Heath
- Grangetown
- Splott
- Canton
- Llandaff
- Radyr
- Gabalfa
- Ely
- Adamsdown
Owners of older and character property
Why composite doors look different to owners of older and character property
This page is for older stock where the replacement has to look right as well as perform. Sightlines, reveal depth and the way a frame sits back from the brick face are the difference between a sympathetic job and an obvious one.
The things worth checking before you accept a price
- Slim sightlines so the glass area is not visibly reduced
- Astragal or bar options that match the original glazing pattern
- The site tidy happens twice per day, not once at the end, so brick dust doesn't track through the house.
- The door slab gets a full inspection before hanging — dents, delamination, edge integrity, all noted before fixings go through.
Ten year product guarantee on heritage profiles exactly as on standard ranges
- Heritage-friendly frame profiles in conservation streetsOur composite doors address this with 48mm solid composite slab.
- Traffic noise on the A48 ringOur composite doors address this with 48mm solid composite slab.
- Single-glazed bays losing heat in tall Victorian roomsOur composite doors address this with 48mm solid composite slab.
How we build composite doors
Old frame stripped on the day, new outer frame fitted plumb to the brick reveal, threshold sealed with EPDM and silicone.
- • 48mm solid composite slab
- • GRP weatherproof skin
- • multi-point Yale or ABS lock
- • PAS24 reinforced cylinder
Guarantee: 10-year product guarantee with a 2-year fitting guarantee on top.
Cardiff at a glance
- Council
- Cardiff
- Postcodes
- CF10, CF11, CF14, CF23, CF24, CF5
- Main route
- A48
- Nearest town
- Penarth (4 mi)
Capital city — everything from Edwardian conservation-area bays to glass-fronted Bay apartments.
What we typically find on composite doors surveys around here
- ·The internal glazing bead sits proud of the frame by 1.5mm, so the seal at the top corner has failed first.
- ·The door-side glazed sidelight has a shattered internal pane held together by the laminated interlayer.
- ·The friction hinge on one window sticks at 45° open and needs the palm of a hand to nudge past.
- ·The old timber sub-cill under a uPVC swap is boron-treatable but only if we lift the frame off it cleanly.
- ·The composite front door skin has a shallow dent from a delivery bike handlebar and it has ovalised the door.
- ·The top vent has been kept permanently closed with a wooden shim wedged inside the frame.
- ·The old timber sub-frame under the current uPVC unit is still in place and is soft at the bottom left corner.
- ·The mid-rail on the composite door is bowed outward at the middle by 2mm — a slab-warp symptom.
- ·A previous owner has fitted a chain to the front door on top of the multipoint — a sign they never trusted the lock.
- ·The bathroom pane is patterned glass from the original build, and the pattern is no longer a current stock line.
- ·A previous fitter drilled through the outer frame chamber for the trickle vent — never fully sealed the drilling.
- ·A cat flap has been cut through the lower panel of the back door, weakening the panel and voiding warranty.
- ·The trickle vent on the master bedroom has been foil-taped shut for warmth — condensation has doubled since.
- ·Handles on the ground-floor windows have been swapped for cheap replacements that no longer match the espag rod.
- ·Trickle vents on the older units are 4000mm² each — modern regs would spec 8000mm² for the same room.
- ·Every south-facing frame has visible micro-cracking in the surface film — early sign of UV embrittlement.
Why residents are booking composite doors right now
- ·The resident wants the crew to be locals who won't disappear if a warranty call needs answering in year eight.
- ·The owner has tried draught-excluder tape and a chimney balloon and now accepts the frames themselves are the cause.
- ·The resident has a shift-worker sleeping in the day and needs the bedroom to be a genuine acoustic step change.
- ·The buyer is running a small business from the home office and wants the kerb to say established and settled.
- ·The resident is moving elderly parents in downstairs and needs the front threshold to be wheelchair-usable.
- ·The buyer wants an installer who will still exist to honour a guarantee in year eight.
- ·The homeowner is expecting a Grandchild to stay for extended visits and wants the guest room genuinely warm overnight.
- ·The homeowner wants the property EPC to move up a band ahead of a remortgage in six months.
- ·The resident is a keen gardener and wants a patio door that opens as fully as possible into the garden.
- ·The resident does not want to be sold to — they want a survey, a written figure, and to be left to decide.
- ·The buyer wants the property to look owned rather than tenanted — the front door tells that story first.
- ·The resident cycles to work and wants a bike-in-porch design that a survey needs to plan around.
- ·The buyer wants the whole ground floor to feel more connected to the garden without losing the wall.
- ·The owner is done paying to service failing 90s uPVC every couple of years and wants the whole set replaced together.
- ·The homeowner wants a single date, a single crew, and a single guarantee — not a paper trail across three companies.
- ·The buyer wants the sound of the sea audible but the wind noise gone.
How our fitters actually do the work
- ·The screws through the outer frame go into pilot-drilled masonry, not driven with hammer action alone.
- ·The trickle vent chamber inside the frame is proven clear with a torch before the outer cap goes on.
- ·The internal architrave is coped rather than mitred where the reveal wall is out of true.
- ·Fixings are always at the reinforcement points — a screw through the chamber alone loosens within a year.
- ·The threshold is bedded on butyl mastic under the outer skin, giving the fitter a second waterproof line behind the perimeter silicone.
- ·The door is closed, locked, and left overnight before final adjustment, so any settlement is captured before sign-off.
- ·The crew calls the client at 5pm the day before to confirm arrival window and site access details.
- ·The door hinges are set with the correct rise before the frame is finally fixed — retro-adjustment on cheap hinges is limited.
- ·The bay-corner post is set with a laser level across both faces before the outer frames are trimmed to fit.
- ·The fitting van is stocked with the specific spare parts likely to be needed on the day — not a return trip on a missing hinge.
- ·The frame square is checked at the diagonals before any glass goes in — a square frame stays square.
- ·The multipoint hooks are lubed with the manufacturer's grease, not household oil that dries and gums.
- ·The keeps for the multipoint are set with the door open and the position marked, not adjusted by eye once the door is closed.
- ·The frame drainage caps are proven flowing before the beading goes in — a bottle of water down the outer chamber.
- ·The old timber cill under a uPVC swap is treated with a boron preservative before the new frame is set over it.
- ·The internal make-good caulk is polymer, tooled with a wet finger and then a spatula for a final radius.
FAQs — composite doors in Cardiff
Do you fit composite doors across all of Cardiff?+
Yes — we work across every CF10 and CF11 and CF14 and CF23 and CF24 and CF5 postcode, from Cyncoed through to Llanishen, and out as far as Roath. 10 miles from base, A470 the whole way — Cardiff installs run as smoothly as our home patch.
What guarantee do I get when you fit composite doors in Cardiff?+
10-year product guarantee with a 2-year fitting guarantee on top. We're insured to work right across Cardiff Council's area, and you have one named contact from quote to snag.
Can composite doors handle heritage-friendly frame profiles in conservation streets?+
Directly, yes — grp skins don't warp, fade only slowly under direct uv, and resist coastal salt better than aluminium-skin doors. That matters in Cardiff where heritage-friendly frame profiles in conservation streets is the single most common reason people call us.
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.
Will composite doors suit the older Edwardian and Victorian bay-fronted houses in Cathays and Roath common around Cardiff?+
The 48mm slab clears most South Wales brick reveals without needing a packer; sidelights match Edwardian bay layouts. We've installed dozens in Cyncoed and Llanishen alone.
Will modern frames look wrong on an older house?+
They can, if the profile is chosen badly. Flush sash sits back into the reveal and keeps the sightline slim, which is why we specify it on older elevations rather than standard chamfered casements.
Can original glazing bar patterns be matched?+
In most cases, using astragal bars externally or bars within the sealed unit. We will show you both at survey because they look noticeably different from the pavement.
Solve heritage-friendly frame profiles in conservation streets for good
Our composite doors use GRP weatherproof skin to fix the root cause — not patch it.
Book a free surveySee heritage options in person in Cardiff
Flush sash profiles, heritage colour range and traditional hardware, priced against the standard range so you can see the difference. Composite doors for Cardiff and the Cardiff Council area, fitted in a single day, usually 4–6 hours, with a written price inside 24 hours.
Summary — composite doors in Cardiff
If you've been weighing up composite doors for your Cardiff home, the next step is a free survey. Bring your address, we'll bring the samples, and you'll have a written quote in your inbox within a day. Most CF10 surveys are booked inside the same week. On composite doors specifically: old timber and rotten 90s uPVC front doors that leak heat, jam in winter and fail break-in standards, fitted in a single day, usually 4–6 hours, 10-year product guarantee with a 2-year fitting guarantee on top.
Faults we fix before recommending composite 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.
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.
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