New aluminium windows for Caerphilly homes
Most of our aluminium windows jobs in Caerphilly start with the same call: "chunky uPVC bars that block daylight in narrow valley terraces, and dated 70s aluminium that cold-bridges and ices up internally". Around here that usually means a stone-fronted terraces where the original frames have given up. We work right across CF83 — Bedwas, Trethomas, Machen and the surrounding streets — typically arriving via A468. Structural openings checked for square, aluminium frames mechanically fixed to the substrate, perimeter sealed with low-modulus silicone.
Free quote in Caerphilly
Owner occupiers doing the whole property in one go
Who this page is for: owner occupiers doing the whole property in one go in Caerphilly
This page is written for the household replacing every opening at once rather than picking off one window a year. The decisions that matter are sequencing, how long the house is open, and whether the price holds from survey to final invoice.
The things worth checking before you accept a price
- An itemised written price so single openings can be added or dropped
- A programme that keeps the house lockable and weathertight every night
- The composite slab is not cut on site — if it does not fit, a new slab is ordered rather than trimmed.
- The frame reinforcing steel is confirmed inside the top rail before the transom fixing is chosen.
Recent whole property jobs, itemised quotes and the guarantee that covers the package rather than each frame separately
Aluminium windows across Caerphilly
- Bedwas
- Trethomas
- Machen
- Energlyn
- Llanbradach
- Abertridwr
- Rudry
- Nelson
- Ystrad Mynach
- Senghenydd
- Aber Valley
Caerphilly at a glance
- Council
- Caerphilly
- Postcodes
- CF83
- Main route
- A468
- Nearest town
- Cardiff (7 mi)
Market town with the castle as the centrepiece — a mix of stone period stock and modern estates.
Recent work near Caerphilly
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.
- Wind-driven rain off the mountain ridgeOur aluminium windows address this with thermally broken aluminium profile.
- Noise from the A469 corridorOur aluminium windows address this with thermally broken aluminium profile.
- Tired 1990s-era double glazing failing at the sealsOur aluminium windows address this with thermally broken aluminium profile.
What we typically find on aluminium windows surveys around here
- ·A previous decorator's dust sheet was left inside the frame chamber during a repaint and is still there.
- ·Trickle vents on the older units are 4000mm² each — modern regs would spec 8000mm² for the same room.
- ·The friction stays are the wrong hand for the sash — a previous swap fitted left-hand stays on a right-hand window.
- ·The composite front door skin has a shallow dent from a delivery bike handlebar and it has ovalised the door.
- ·There is a permanent green algal streak below the sill where water is bypassing the drip groove.
- ·The transom bar has a live crack in the plastic, opened up by summer expansion cycles.
- ·The friction hinge on a bedroom window has one detent — it either opens fully or slams shut on any breeze.
- ·The escutcheon on the front door is loose and rotates as the key turns.
- ·A tenant repair on the bathroom window has used bathroom silicone as the primary bead — it's already gone black.
- ·A previous fitter drilled through the outer frame chamber for the trickle vent — never fully sealed the drilling.
- ·The letterplate is a straight through-plate with no anti-snap flap — visible from outside in the hallway.
- ·The bay-window front elevation has a visible smile — the middle mullion has sagged and taken the head with it.
- ·The bay-corner post has bowed by about 4mm across two metres — visible only if you sight along it.
- ·A previous owner has fitted a chain to the front door on top of the multipoint — a sign they never trusted the lock.
- ·Condensation runs down the inside of every north-facing pane between October and March.
- ·Two units have the classic dust ring inside the sealed gap, meaning the perimeter seal has been breached for at least a year.
Why residents are booking aluminium windows right now
- ·The resident is done with condensation-driven mould at the sill line every February.
- ·The homeowner is on a smart meter and can see the room-by-room heat loss on a phone app.
- ·The owner wants a threshold that does not require a step for a mobility scooter to clear.
- ·The homeowner wants the composite front door to survive a decade of coastal salt without going chalky.
- ·The buyer wants the heating bill visibly lower before next winter, not a marginal improvement they have to guess at.
- ·The buyer is buying the property specifically for the garden and wants a bi-fold that opens the whole rear elevation.
- ·The resident wants the noise of the school run down and the light from the morning sun up.
- ·The homeowner has quotes from two national companies and wants a local one to be honest about the same job.
- ·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 is done with the biannual repaint of the timber back door and wants a paint-free equivalent.
- ·The homeowner is planning a garden studio and wants the patio doors to bookend the view when it's finished.
- ·The buyer wants no upsell scripts — a survey, a spec, a figure, and space to think.
- ·The buyer wants a composite front door that reads more house-proud than the run of identical rentals on the road.
- ·The buyer is moving in with two dogs and needs a back door that will not degrade with claw scrape.
- ·The buyer has just moved in and is fixing everything the vendor's homebuyer report flagged, in priority order.
How our fitters actually do the work
- ·Fixings are always at the reinforcement points — a screw through the chamber alone loosens within a year.
- ·The trim between the frame and the plaster line goes on last, after the sealant has set and been proven leak-tight.
- ·The internal trim goes on with pin nails through the flange, not straight through the visible face.
- ·The composite slab is not cut on site — if it does not fit, a new slab is ordered rather than trimmed.
- ·The keys are handed to the client only after the lock has been thrown four times in and out from both sides.
- ·The cylinder key gets a keyring immediately, so it does not sit unnoticed in a jacket pocket for the day.
- ·The frame reinforcing steel is confirmed inside the top rail before the transom fixing is chosen.
- ·The internal reveal is masked before any silicone runs, so the finished bead is a clean line against the plaster.
- ·The internal skirting is protected with a strip of packing tape across the top edge before any tool touches it.
- ·The composite slab is not trimmed on site — if it doesn't fit, a new slab is ordered rather than reduced.
- ·The bay-corner post is set with a laser level across both faces before the outer frames are trimmed to fit.
- ·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 reveals are photographed on arrival so any pre-existing damage is on record before the crew touches them.
- ·The multipoint hooks are lubed with the manufacturer's grease, not household oil that dries and gums.
- ·The frame perimeter sealant is a low-modulus polymer where the substrate is going to move — plain silicone otherwise.
- ·The gasket at the corner mitre is butt-jointed with a fresh knife cut, not stretched and hoped.
FAQs — aluminium windows in Caerphilly
Do you fit aluminium windows across all of Caerphilly?+
Yes — we work across every CF83 postcode, from Bedwas through to Trethomas, and out as far as Machen. Easy in via the A469, and we're 10 minutes from the A470 for vans loaded with full-house glass.
What guarantee do I get when you fit aluminium windows in Caerphilly?+
10-year powder-coat guarantee, 2-year fit warranty. We're insured to work right across Caerphilly County Borough Council's area, and you have one named contact from quote to snag.
Why replace the whole set rather than one-by-one in a Caerphilly home?+
Because chunky uPVC bars that block daylight in narrow valley terraces, and dated 70s aluminium that cold-bridges and ices up internally 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 CF83.
Do you do commercial aluminium windows for sites near Pontygwindy Industrial Estate?+
Yes. We've worked across Pontygwindy Industrial Estate and Bedwas House Industrial Estate, supplying the same thermally broken aluminium profile build we use on residential. Commercial quotes include site access notes and out-of-hours options.
How do you reach jobs in Caerphilly from your base?+
Easy in via the A469, and we're 10 minutes from the A470 for vans loaded with full-house glass — typically a short run via A468.
Can I stage a whole house replacement over two visits?+
Yes. Front elevation and front door first, rear later is a common split. It costs slightly more overall than doing everything in one visit and we will show you the difference in writing before you decide.
Do I have to use the same specification in every room?+
No, and it is usually cheaper not to. Triple glazing where noise or cold is the real complaint, A rated double elsewhere, obscure glass in bathrooms. We price the options side by side at survey.
Solve wind-driven rain off the mountain ridge for good
Our aluminium windows use powder-coated RAL finish to fix the root cause — not patch it.
Book a free surveyBook a whole property survey in Caerphilly
We measure every opening, photograph each reveal and send an itemised written price within 24 hours. Nothing is estimated from the pavement. Aluminium windows for Caerphilly and the Caerphilly County Borough Council area, 1–2 days for a typical rear elevation, longer for full-house, with a written price inside 24 hours.
Summary — aluminium windows in Caerphilly
If you've been weighing up aluminium windows for your Caerphilly 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 CF83 surveys are booked inside the same week. On aluminium windows specifically: chunky uPVC bars that block daylight in narrow valley terraces, and dated 70s aluminium that cold-bridges and ices up internally, 1–2 days for a typical rear elevation, longer for full-house, 10-year powder-coat guarantee, 2-year fit warranty.
Faults we fix before recommending aluminium windows
Handles are a cheap wearing part — the trick is matching spindle length, backset and screw centres so it fits first time.
Friction stays are consumable — when they corrode or bend, the sash drops out of square and everything else starts to fail with it.
Asymmetric glass thickness and a good frame seal cut traffic noise; simply adding a third identical pane often doesn't.
Yellowing is cosmetic and treatable; splits at the welded corners are structural and aren't.
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.