Blackwood composite doors — survey, supply & install
Three things shape every composite doors install in Blackwood: the age of the brick, the prevailing weather off in the pointing, and what your neighbours have already done. Our spec uses 48mm solid composite slab and Solidor / Rockdoor style ranges, with fitted in a single day, usually 4–6 hours on site. Crews work out of vans serving NP12 weekly.
10/10 on Checkatrade across Blackwood and Bargoed
Over 50 verified reviews from Caerphilly homeowners. 10-year product guarantee with a 2-year fitting guarantee on top.
Recent work near Blackwood
NP4 · February 2026Composite door installFrom quote to fitting, faultless. The new door looks stunning and the security upgrade is night and day. Thanks Rosac!
NP12 · December 2025New windows throughoutBrilliant from start to finish. Quote was honest, install was tidy and the house feels so much warmer. Top job.
Blackwood at a glance
- Council
- Caerphilly
- Postcodes
- NP12
- Main route
- A4048
- Nearest town
- Bargoed (5 mi)
A valley town with more modern estate housing than most, which is why whole house replacement is the common job here.
Why Blackwood homeowners choose us
Owner occupiers doing the whole property in one go
Buying composite doors as owner occupiers doing the whole property in one go
The reader here has decided the whole property needs doing and is now comparing installers rather than products. That means the useful information is programme length, who is actually on site, and what the written quote covers opening by opening.
What we build into the quote for you
- Matching frame colour and hardware finish across the whole property
- Old frames, sashes and glass taken away rather than left in the garden
- The internal skirting is protected with a strip of packing tape across the top edge before any tool touches it.
- The client's paint colour on the internal reveal is patched with matching paint the crew brings, not left for someone else.
Full public liability insurance and a written two year fitting guarantee on the package
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.
- First generation double glazing from the 1980s that has misted across whole elevationsOur composite doors address this with 48mm solid composite slab.
- Damp valley air that finds any failed seal or gap in the pointingOur composite doors address this with 48mm solid composite slab.
- Large estate houses where a partial replacement leaves mismatched framesOur composite doors address this with 48mm solid composite slab.
What we typically find on composite doors surveys around here
- ·The glazing spacer bars are aluminium, not warm-edge — a decade behind current U-value expectation.
- ·The gap under the front door has been carpet-strip filled from inside — the exterior weather bar is missing.
- ·The letterplate has a hinged internal flap that has snapped off and is currently held in place with masking tape.
- ·One patio-door interlock has a bent alignment lug — the door jams shut half of the time.
- ·The gasket join at the bottom corner has separated by a few millimetres — that's where the draught is coming from.
- ·The composite slab has swelled by 2mm on the hinge stile from years of morning-sun exposure.
- ·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.
- ·The internal window board has swelled at the sink end from years of splash and is delaminating along the front edge.
- ·A cracked pane has been temporarily patched with clear tape and left for six months.
- ·The cylinder on the front door still has the builder's key stamp, meaning it has never been changed since handover.
- ·The internal reveal architrave has been re-fixed with panel pins that have rusted and stained the paintwork.
- ·The old timber sub-cill under a uPVC swap is boron-treatable but only if we lift the frame off it cleanly.
- ·A weep vent that was factory-drilled has been over-painted three times and no longer clears water from the chamber.
- ·Silicone at the outer perimeter has hardened, cracked, and lifted at the head — water tracks behind it in heavy rain.
- ·A cat flap has been cut through the lower panel of the back door, weakening the panel and voiding warranty.
- ·The internal beads pop out with a chisel and a tap, but the external glazing gasket is bonded solidly to the frame.
Why residents are booking composite doors right now
- ·The owner has tried draught-excluder tape and a chimney balloon and now accepts the frames themselves are the cause.
- ·The resident does not want to be sold to — they want a survey, a written figure, and to be left to decide.
- ·The resident wants an installer who will point out things the current property is doing well and leave those alone.
- ·The customer wants a specific hardware colour to match a kitchen renovation booked six months out.
- ·The resident wants the noise of the school run down and the light from the morning sun up.
- ·The owner is dealing with a partner who works nights and needs the bedroom acoustically watertight before summer.
- ·The buyer wants the property to be quieter after 11pm — the street noise is fine, the bass from next door is not.
- ·The resident wants the ground-floor windows to be genuinely secure — laminated inner pane, PAS24 hardware, real not marketed.
- ·The homeowner is planning a loft conversion next year and wants the windows sorted before scaffold cost is priced.
- ·The owner is done with the annual condensation season and wants the fabric of the openings to end it.
- ·The resident wants the whole property warm to bare feet on a January morning — the frames are the last variable.
- ·The buyer wants a written commitment on the sealant colour and the trim colour before any deposit changes hands.
- ·The homeowner wants the back door to be a family door — kids in and out, and no one having to slam it to lock.
- ·The buyer wants a composite front door that reads more house-proud than the run of identical rentals on the road.
- ·The homeowner is preparing to work from home permanently and wants the office quieter than the living room used to be.
- ·The resident wants an installer who will honestly say when a repair beats a replacement.
How our fitters actually do the work
- ·The crew calls the client at 5pm the day before to confirm arrival window and site access details.
- ·Door thresholds are set with a spirit level along their full length and then re-checked with a straight edge.
- ·The head of the frame is packed dry before the sides are fixed, so the frame does not distort during installation.
- ·The friction stay on a new casement is set to the client's preferred restraint at handover — 45°, 90°, or fully open.
- ·New frames sit on hardwood packers, not plastic offcuts — plastic creeps under load, timber does not.
- ·The threshold ramp on an accessible door is set to a maximum 15mm rise and confirmed with a spirit-level lip.
- ·The internal architrave is coped rather than mitred where the reveal wall is out of true.
- ·The install team pull the fridge out for kitchen-window swaps only after checking the flooring can take the drag scuff.
- ·The old broken glass is bagged in a labelled sack, not tipped loose into a general skip.
- ·The crew asks the client where the kettle lives before they set up so tea gets made rather than negotiated.
- ·The frame reinforcing steel is confirmed inside the top rail before the transom fixing is chosen.
- ·The crew photographs the finished elevation from the street and shares it with the office as the sign-off record.
- ·The window board is scribed to the plaster line, not left with a caulked gap that shows in raking light.
- ·The bead-in tools are rubber-faced, not steel — a steel tool marks the profile within minutes.
- ·The multipoint gearbox is thrown by hand before the frame goes in — a factory fault at that point is a five-minute fix.
- ·The lead fitter photographs the reveal condition before the old frame comes out and shares those photos with the office.
FAQs — composite doors in Blackwood
Do you cover Bargoed and Risca as well?+
Yes — Bargoed is roughly 5 miles from Blackwood, Risca about 7. Same team, same prices, same guarantee.
Do you do commercial composite doors for sites near Oakdale Business Park?+
Yes. We've worked across Oakdale Business Park and Penmaen Industrial Estate, supplying the same 48mm solid composite slab build we use on residential. Commercial quotes include site access notes and out-of-hours options.
How long does a composite doors install take in a Blackwood property?+
Fitted in a single day, usually 4–6 hours. Most of the a broad mix we see in Blackwood fit our standard schedule with no surprises.
What colours and finishes are available for composite doors?+
Solidor / Rockdoor style ranges; anthracite, navy, racing green, chartwell, black; brass, chrome or matt black hardware. We bring physical samples to the quote so you can see them against your a broad mix in real light.
What guarantee do I get when you fit composite doors in Blackwood?+
10-year product guarantee with a 2-year fitting guarantee on top. We're insured to work right across Caerphilly County Borough Council's area, and you have one named contact from quote to snag.
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.
Will the house be secure overnight during a full replacement?+
Yes. Only one elevation is open at a time and every opening we start is finished, glazed and locked before we leave for the day.
Plan the work around your household in Blackwood
Tell us the rooms you cannot lose and we will sequence the elevations around them. Most properties are finished in two to four days. Composite doors for Blackwood and the Caerphilly County Borough Council area, fitted in a single day, usually 4–6 hours, with a written price inside 24 hours.
Summary — composite doors in Blackwood
From Cefn Fforest to Oakdale, our patch is small enough that we'll see your finished composite doors install ten times a year. That keeps us honest around Blackwood. Get in touch when you're ready. 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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