Caerphilly Edwardian bay-fronted house full-house replacement — Rosac survey & install
If you've got a Edwardian bay-fronted house on your hands in Caerphilly, the recurring problem when quoting full-house replacement is the original bay corner posts have almost always been replaced in cheap 90s uPVC and now sag. The false economy of replacing one tired window at a time while the others keep failing is the paired issue you'll usually hear about at the same visit. Our spec here is A+ uPVC or aluminium frames with argon-filled units. Estate roads are wide and van-friendly — we can leave the truck in one spot for the whole day without moving. Bay ceiling drops usually have a beam boxed in above — we route silicone around the boxing edge rather than through it. Rural cottages often have limited off-road parking; the van sits on the road and the crew boards through the front door. Rural access often includes a farm gate and a narrow lane — we check turn-in width at survey. Frame colour on the front elevation is often deed-restricted to white, cream or a heritage green in conservation areas. Single-skin wall means the frame carries no thermal break at the perimeter — sealant bead depth matters more than usual. Original 60s sliding aluminium frames cold-bridge — you can feel a two-degree temperature drop within a foot of the glass in winter. Salt air pits cheap aluminium at the fixing points; genuinely marine-grade powder coating resists. Original front cills are usually blue engineering brick — leave them, drill through them for the frame fixings. External cill drips block with paint over the decades — raking them clean stops water sitting on the frame after install.
Common edwardian bay-fronts problems we quote full-house replacement for
- 1The original bay corner posts have almost always been replaced in cheap 90s uPVC and now sag.
- 2Porch tiles cracked around the door frame where the timber has moved.
- 3Cold bridging at the bay-to-ceiling junction because the original lath-and-plaster was skimmed straight over.
Reveal and install detail
- → The porch canopy sits at 2.0–2.1m — deliveries and scaffold lifts need to allow for it.
- → Reveals are usually rendered internally over lath, so care during removal stops big patches falling.
Method: front-to-back schedule: front elevation first, sides, then rear; one team on site each day; rubbish cleared nightly.
Guarantee: 10-year product on every frame, 2-year fitting on the whole package, single point of contact.
Local context — Caerphilly
- Council
- Caerphilly
- Postcodes
- CF83
- Main route
- A468
- Nearest town
- Cardiff (7 mi)
Neighbourhoods we cover: Bedwas, Trethomas, Machen, Energlyn, Llanbradach. Easy in via the A469, and we're 10 minutes from the A470 for vans loaded with full-house glass.
Who's asking
Families in the leafy Edwardian suburbs and downsizers moving back into the character stock for the layout.
In Caerphilly specifically that reads as young families upgrading first homes, long-time owners replacing original 90s uPVC. The recurring driver for a full-house replacement enquiry is: Owners who want the bay preserved as a feature, not flattened, and hardware that reads period.
Planning & permissions
Bay elevations are a strongly protected feature in most Edwardian conservation areas — we usually replicate the original sightlines rather than modernise.
Locally in Caerphilly, Caerphilly County Borough Council covers this area. Market town with the castle as the centrepiece — a mix of stone period stock and modern estates. We check any conservation or Article 4 status against the address before quoting rather than after.
What we typically find on survey
- ·The hinges are all dropped one notch from level, taking the sash out of square against the outer frame.
- ·A cracked pane has been temporarily patched with clear tape and left for six months.
- ·The escutcheon plate on the back door hides a botched cylinder swap where the follower is worn.
- ·The top hinge on the front door has torn its middle screw out and been left to run on two fixings.
- ·The garden gate side of the property gets no direct sun and the frames there look ten years newer than the fronts.
- ·The internal reveal plaster is spalling under the cill where condensation has run for years.
- ·A previous fitter left the transport wedges in the frame corners and the internal seal never fully reset.
- ·The old timber sub-cill under a uPVC swap is boron-treatable but only if we lift the frame off it cleanly.
- ·One handle turns freely through 180° with no engagement — a snapped internal cam.
- ·The mid-rail on the composite door is bowed outward at the middle by 2mm — a slab-warp symptom.
- ·The old timber back door has a live rot pocket at the bottom hinge that reads soft to a screwdriver tip.
- ·Every casement in the property opens with a firm tug on the second click — the friction stays are seized.
- ·The top vent has been kept permanently closed with a wooden shim wedged inside the frame.
- ·Trickle vents on the older units are 4000mm² each — modern regs would spec 8000mm² for the same room.
- ·The old aluminium sliding door has grit in the track that has worn the roller wheels to elliptical.
- ·The reveal internally has been skimmed over the old plaster edge, hiding a 6mm gap behind the architrave.
- ·The reinforcement steel inside the top rail of a wide sash has rusted through in one corner.
- ·One of the sealed units carries the previous installer's phone number etched on the aluminium spacer bar.
- ·The old timber sub-frame under the current uPVC unit is still in place and is soft at the bottom left corner.
- ·The bay corner post has never had its structural bracket — a common corner-cutting shortcut a decade ago.
- ·Original security stickers from the installer are still on the bottom of the panes, twenty years later.
- ·A homemade timber threshold has been screwed to the concrete cill in front of the patio door.
- ·The transom bar has a live crack in the plastic, opened up by summer expansion cycles.
- ·The seal at the beading corner has shrunk enough to expose the mitre on the internal white finish.
Why residents are enquiring right now
- ·The owner wants the master bedroom quiet enough for a night-shift partner to sleep past 11am.
- ·The owner is buying and wants to time the frame swap for the week between exchange and moving in.
- ·The resident cycles to work and wants a bike-in-porch design that a survey needs to plan around.
- ·The homeowner has quotes for a new kitchen next spring and wants the patio doors in before those trades arrive.
- ·The buyer wants no upsell scripts — a survey, a spec, a figure, and space to think.
- ·The homeowner is preparing to work from home permanently and wants the office quieter than the living room used to be.
- ·The buyer has just moved in and is fixing everything the vendor's homebuyer report flagged, in priority order.
- ·The homeowner wants the crew to catch anything the vendor's survey missed while they're on site.
- ·The owner wants a threshold that does not require a step for a mobility scooter to clear.
- ·The homeowner wants the front porch to feel enclosed in winter and open in summer.
- ·The resident has already lost one composite door to a courier boot and wants the replacement rated for impact.
- ·The buyer wants the front door delivered pre-hung and pre-glazed on the same date as the frames.
- ·The homeowner is expecting twins and wants the room-to-room noise transfer down before the arrival.
- ·The resident wants the front to look distinct on a street of five identical houses.
- ·The buyer wants a full set of the same colour across every elevation, not the current mixed collection.
- ·The customer wants a specific hardware colour to match a kitchen renovation booked six months out.
- ·The homeowner is planning a garden studio and wants the patio doors to bookend the view when it's finished.
- ·The owner is done with the biannual repaint of the timber back door and wants a paint-free equivalent.
- ·The buyer is moving in with two dogs and needs a back door that will not degrade with claw scrape.
- ·The resident is on a listed street and wants a front door that will pass Article 4 first time.
- ·The buyer wants a specific coloured composite front door because they saw it three doors down and it made the street.
- ·The resident is done with condensation-driven mould at the sill line every February.
- ·The homeowner has an infrared thermometer and has been point-checking the frames — they want the readings up by ten degrees.
- ·A recent break-in on the street has moved security up the priority list ahead of aesthetics.
How we actually fit it
- ·The internal make-good uses caulk to the plaster, silicone to the tiles, and neither where paint has to go over.
- ·The window boards are pre-treated on the underside with a moisture seal before setting in place.
- ·The letterplate brush strip is trimmed to the exact height of the door thickness so it seals without dragging.
- ·Fixings are always at the reinforcement points — a screw through the chamber alone loosens within a year.
- ·The trickle vent chamber inside the frame is proven clear with a torch before the outer cap goes on.
- ·The composite slab is not trimmed on site — if it doesn't fit, a new slab is ordered rather than reduced.
- ·The internal trim goes on with pin nails through the flange, not straight through the visible face.
- ·The old broken glass is bagged in a labelled sack, not tipped loose into a general skip.
- ·Trickle vents are drilled through the outer frame with a bespoke jig — not freehand with a spade bit.
- ·We de-glaze into a padded rack, not straight into the skip — the intact panes go to a glazier for reuse.
- ·The internal architrave is scored along its length with a fresh blade before removal, so the wallpaper does not tear back.
- ·The frame drainage caps are proven flowing before the beading goes in — a bottle of water down the outer chamber.
- ·The frame reinforcement steel is confirmed by knock-test before selecting the fixing pattern.
- ·Ground protection sheet goes down before the old frame comes out — not after the mess starts.
- ·The old frame's fixing holes in the brick are filled and made good before the new outer frame beads up to the reveal.
- ·The bay assembly is squared with a laser diagonal, not a tape measure and eye.
- ·The perimeter tape between frame and reveal is a compressible foam tape, not a plain butyl strip.
- ·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 mitre joins on any Georgian bar are picked to face the corner that is least visible from indoors.
- ·The window board is scribed to the plaster line, not left with a caulked gap that shows in raking light.
- ·The multipoint hooks are lightly greased after fitting, before the door is closed for the first time.
- ·The threshold has an EPDM strip continuous under the frame — not stitched together across the door width.
- ·The client's paint colour is sampled at the survey visit and matched at the office before the fitters arrive on install day.
- ·The trickle-vent covers are set with their vane orientation matched across a bank of windows for visual consistency.
Free full-house replacement survey — Edwardian bay-fronted house, Caerphilly
Book a 30-minute visit. We walk every reveal, sample the one consistent foil/RAL across every elevation against the elevation, and email a written figure inside 24 hours.
Summary — full-house replacement on a Edwardian bay-fronted house in Caerphilly
Book a survey and you'll have a full-house replacement figure for your Edwardian bay-fronted house inside 24 hours. Developer window frames are typically low-spec multi-chamber uPVC — the profile is fine, the hinges and glass are the fail point. External timber cladding at the head of the window is easily matched to modern PVC trim in a coordinated foil. No pressure sell, no deposit until a date is confirmed. External foil cills are colour-matched to the frame — replace as a set or the elevation reads two-tone. The two-storey bay carries loading from the roof valley — reinforced steel corner cores accept it without deflection. Listed status is documented on the deed pack — we check before quoting anything other than like-for-like heritage spec. Gable-end glass panes are often 2.4m+ tall; we deliver on a dedicated glass lift rather than by hand.
Let's make your house feel more like home.
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