Patio & French Doors on an ex-council semi in Cardiff
If you've got a ex-council semi on your hands in Cardiff, the recurring problem when quoting patio doors is original Crittall or 70s aluminium replaced with 90s-spec uPVC that's now failing at the gaskets. Tired 80s sliding aluminium doors that stick, lose heat and rattle in the wind is the paired issue you'll usually hear about at the same visit. Our spec here is thermally broken aluminium or reinforced uPVC with toughened safety glass to BS EN 12150. Stained-glass fanlights above the door can be re-set into a modern composite slab if intact, giving continuity across the swap. Stone walls hold thermal mass but radiate cold at the reveal edge; deep frames pull the cold plane further from the room. Roof canopies are usually mono-pitch and shallow — scaffold clearance rarely exceeds 2.1m above the frame head. New-build reveals are square to within 3mm — packing is minimal and the frame lands true first time. Slate roofs shed water tight to the head of the frame; lead flashing detail is usually original and only needs re-dressing. Original Crittall steel casements can be recycled at scrap — worth calling ahead if the client wants the fee. Ex-council reveal openings are generous — swapping to a slimmer profile actually loses daylight, not gains it. Soft verges take van weight for a few hours in dry weather; we stage deliveries around forecast rain. Original leaded lights are worth preserving; specialist restorers pay to buy them if the client wants to sell rather than store. Foil colour on the front elevation reads sympathetic when it lifts a warm undertone from the brick — pure white can look stark.
Local context — Cardiff
- Council
- Cardiff
- Postcodes
- CF10, CF11, CF14, CF23, CF24, CF5
- Main route
- A48
- Nearest town
- Penarth (4 mi)
Neighbourhoods we cover: Cyncoed, Llanishen, Roath, Cathays, Penylan. 10 miles from base, A470 the whole way — Cardiff installs run as smoothly as our home patch.
Reveal and install detail
- → Square, large openings — the frame options are wider than on period stock.
- → External cills are usually concrete — sound and stable, drip clean-out is standard.
Method: lintel and floor checked for level, track set with stainless packers, doors hung and aligned so they roll true under their own weight.
Guarantee: 10-year product, 2-year fitting.
Planning & permissions
Ex-council stock is rarely restricted; owners have free reign over colour and style. Many streets end up with a full mix of finishes as owners upgrade individually.
Locally in Cardiff, Cardiff Council covers this area. Capital city — everything from Edwardian conservation-area bays to glass-fronted Bay apartments. We check any conservation or Article 4 status against the address before quoting rather than after.
Who's asking
Right-to-buy long-time owners, and second-owner buyers refurbishing the plot for its garden size.
In Cardiff specifically that reads as city professionals, young families in the suburbs, landlords with HMOs near Cathays Park. The recurring driver for a patio doors enquiry is: Owners lifting the property from spec-basic to modern spec — often as part of a wider refurb.
What makes a ex-council semi its own thing
- solid front door with an off-centre small window or side pane
- cavity brick or block construction with a rendered upper storey
- generous garden front and back — often the largest plots on the street
- detached or semi-detached with a single garage or off-street parking
What we typically find on survey
- ·The frame drainage on a south-facing bathroom window is blocked with paint film from the exterior repaint.
- ·The letter plate cover has snapped off and the exposed brush strip has flattened over the years.
- ·The catch keep for the bathroom window has been packed out with a folded matchbox to make the sash lock.
- ·A previous cylinder swap left the escutcheon plate rotating freely — a snap risk that nobody logged.
- ·Original security stickers from the installer are still on the bottom of the panes, twenty years later.
- ·The multipoint lock still throws but the internal handle has 40° of dead travel before engaging.
- ·The internal window board has swelled at the sink end from years of splash and is delaminating along the front edge.
- ·The letterplate has a hinged internal flap that has snapped off and is currently held in place with masking tape.
- ·The top hinge on the front door has torn its middle screw out and been left to run on two fixings.
- ·The bottom hinge on the front door has torn its top screw fixing free of the frame.
- ·The internal glazing bead across the top of the bay lifts out completely with fingernail pressure.
- ·The composite front door skin has a shallow dent from a delivery bike handlebar and it has ovalised the door.
- ·The old timber back door has a live rot pocket at the bottom hinge that reads soft to a screwdriver tip.
- ·The letterplate is a straight through-plate with no anti-snap flap — visible from outside in the hallway.
- ·Every kitchen window handle has been replaced twice in ten years — a sign the espag is going, not just the handle.
- ·The composite slab has swelled by 2mm on the hinge stile from years of morning-sun exposure.
- ·The reinforcement steel inside the top rail of a wide sash has rusted through in one corner.
- ·Condensation runs down the inside of every north-facing pane between October and March.
- ·The composite door slab has a hairline crack along the letterplate cut-out from a delivery boot.
- ·The window boards inside are chipboard, swollen at the edges from years of trickle condensation.
- ·Original door furniture is 90s brass, tarnished, and no longer matches anything else on the elevation.
- ·Handles on the ground-floor windows have been swapped for cheap replacements that no longer match the espag rod.
- ·There is a permanent green algal streak below the sill where water is bypassing the drip groove.
- ·The cylinder on the front door still has the builder's key stamp, meaning it has never been changed since handover.
Why residents are enquiring right now
- ·The homeowner has quotes from two national companies and wants a local one to be honest about the same job.
- ·The homeowner wants the property EPC to move up a band ahead of a remortgage in six months.
- ·The resident wants the whole property warm to bare feet on a January morning — the frames are the last variable.
- ·The homeowner wants the composite front door to survive a decade of coastal salt without going chalky.
- ·The resident wants the kitchen brighter in the mornings without losing the privacy from next door's back garden.
- ·The buyer wants the porch to stay a porch and not turn into a mud room by function.
- ·The wife wants the noise from the trunk road down; the husband wants the heating bill down; both are on the enquiry.
- ·The homeowner is preparing to work from home permanently and wants the office quieter than the living room used to be.
- ·The homeowner wants a warranty they can pass on to the next owner without a fee or a form.
- ·The customer wants a specific hardware colour to match a kitchen renovation booked six months out.
- ·The homeowner is preparing the property for a smart-home installation and wants sensor pockets designed into the reveals.
- ·The resident is a keen gardener and wants a patio door that opens as fully as possible into the garden.
- ·The homeowner is on holiday half the year and wants a security spec they can leave for weeks without worrying.
- ·The homeowner wants the crew to catch anything the vendor's survey missed while they're on site.
- ·The resident has already had one failed installation and wants to know exactly how this one will differ.
- ·The resident wants the ground-floor windows to be genuinely secure — laminated inner pane, PAS24 hardware, real not marketed.
- ·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 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 planning a loft conversion next year and wants the windows sorted before scaffold cost is priced.
- ·The resident wants the letterbox to stop being a draught source without giving up daily post.
- ·The buyer has just moved in and is fixing everything the vendor's homebuyer report flagged, in priority order.
- ·The owner wants the frames to disappear visually and let the view do the work.
- ·The buyer wants a composite door slab that a courier's boot cannot dent when a delivery is fumbled.
- ·The buyer wants the frames branded with the manufacturer's paperwork stapled to the frame chamber for the next owner.
How we actually fit it
- ·The door is closed, locked, and left overnight before final adjustment, so any settlement is captured before sign-off.
- ·The letterplate cowl is checked to swing free without touching the door face — a rubbing cowl marks the paint within weeks.
- ·The frame perimeter sealant is a low-modulus polymer where the substrate is going to move — plain silicone otherwise.
- ·The old cylinder is disposed of by the crew, not left in a bag on the drive for the client to bin.
- ·The frame drainage slots are checked and blown clear before the beads go in — a plugged slot fills the chamber.
- ·The frame perimeter is checked with a smoke pencil for airtightness before the internal trims go on.
- ·The frame square is checked at the diagonals before any glass goes in — a square frame stays square.
- ·The composite slab is not cut on site — if it does not fit, a new slab is ordered rather than trimmed.
- ·The crew takes the old glass off site in a labelled sack that day, not a skip left on the drive.
- ·The threshold has an EPDM strip continuous under the frame — not stitched together across the door width.
- ·The bay assembly is squared with a laser diagonal, not a tape measure and eye.
- ·The van carries a set of dust extraction attachments and uses them on any grinder work in occupied rooms.
- ·The threshold ramp on an accessible door is set to a maximum 15mm rise, checked with a spirit-level lip.
- ·The install team pull the fridge out for kitchen-window swaps only after checking the flooring can take the drag scuff.
- ·The client's paint colour is sampled at the survey visit and matched at the office before the fitters arrive on install day.
- ·The manufacturer's kite mark on the corner of the glass is left in place at handover — proof of spec for the next owner.
- ·The keys are handed to the client only after the lock has been thrown four times in and out from both sides.
- ·Fixings are always at the reinforcement points — a screw through the chamber alone loosens within a year.
- ·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 is protected with a low-tack tape at any point a tool might scrape it during the fitting hour.
- ·The friction stay on a new casement is set to the client's preferred restraint at handover — 45°, 90°, or fully open.
- ·The threshold sealant runs the full width with a single tool pass, not stitched together in inches.
- ·The multipoint keeps get a smear of grease inside the pocket before the door is closed for the first time.
- ·The letterplate brush strip is trimmed to the exact height of the door thickness so it seals without dragging.
Free patio doors survey — ex-council semi, Cardiff
Book a 30-minute visit. We walk every reveal, sample the 2- or 3-panel sliding patio against the elevation, and email a written figure inside 24 hours.
Summary — patio doors on a ex-council semi in Cardiff
Ex-council semi jobs in Cardiff get a named contact from survey to snag. 10-year product, 2-year fitting sits behind it. Foil colour on the front elevation reads sympathetic when it lifts a warm undertone from the brick — pure white can look stark. Original leaded lights are worth preserving; specialist restorers pay to buy them if the client wants to sell rather than store. Foil colour on the front elevation reads sympathetic when it lifts a warm undertone from the brick — pure white can look stark. Original leaded lights are worth preserving; specialist restorers pay to buy them if the client wants to sell rather than store. Grass verges take skip weight fine when boarded — check with the council before dropping directly onto turf. Original developer composite slabs often warp under southern sun; a replacement 48mm slab with GRP skin resists.
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