Caerphilly · Wales
uPVC window & door repair in Thornhill, Caerphilly
Damaged window, door or sill in Thornhill? We repair it in place, mix the colour on the day and guarantee the work for a year.
- Repairs from £95
- Damage during building work
- Burns on sills
uPVC repair at your home in Thornhill
Builders and developers use us for snagging repairs too. The damage is filled and refinished so it blends into the frame, including woodgrain finishes. Our technicians work on coloured and woodgrain uPVC, white uPVC and doors & door panels, and the jobs we see most are holes from removed fittings and alarms and chips and dents.
We guarantee the work for a year. If something isn’t right in that time, we come back and put it right. Warm soapy water and a soft cloth are all it needs. Avoid solvents and abrasive cleaners.
- Location
- Thornhill (CF83)
- Region
- Caerphilly
- Warranty
- One year on every repair
- Price
- From £95. Free, fixed price from pictures
- Phone
- 0345 017 0787
- Page updated
- 23 October 2026
What uPVC repair costs
Repairs from £95. Every quote is fixed and free. What we look at:
- Doing more than one item at once
- The type of damage
- How easy the damage is to reach
- Unusual colours or finishes
Rather than charging by the hour, we price the entire job up front. It depends on the damage, the material and access, and doing several items at once reduces it.
Send pictures for a quote
You can take the pictures on your phone, there is no need for anything special. Just make sure we can see:
- Good light, ideally daylight, without flash glare
- The postcode, so we can plan the visit
- Any earlier repairs or coatings
- One picture of the whole window, door or sill
Email us a picture of the damage and one of the entire item, with your CF83 postcode, and we’ll come back with a fixed quote.
Work for landlords and builders
For anyone letting property in or around Thornhill, we will quote for several properties at once. Send photos for each one and we will come back with a combined price.
Rented homes see more wear and tear, and replacing things at every changeover adds up. A repair between tenancies is a cheaper way to keep the property in good order.
When we would advise against a repair
Before you book, it’s worth knowing the limits:
- Failed or misted double glazing units
- Broken locks, hinges or mechanisms
- Frames that are warped or out of square
Not sure? Send photos and we will give you a straight answer before booking.
What we work on
- White uPVC
- Doors & door panels
- Coloured and woodgrain uPVC
- Conservatory frames
- Window frames & sills
Your questions about uPVC repair in Thornhill
Are you a vetted contractor?
We hold CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile accreditations.
Is it OK to have pets in the house?
Keep pets and children away from the work area on the day, so the repair is not disturbed while it cures.
Can you quote from photos?
Normally, yes. Clear photos let us give you a fixed price without visiting.
Can you repair a burn on a uPVC sill?
Yes. The burn is filled and refinished to match.
Do the materials smell?
It depends on the job, but often a little. Ventilation keeps it to a minimum, and it soon fades.
Can you redo someone else’s repair?
Generally, yes. Tell us what was done before and we’ll plan for it.
Is a repair better than a new one?
Generally, yes. Replacement brings removal, refitting and making good, which a repair avoids. If it isn’t worth repairing, we will tell you.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
DIY kit or professional repair?
You can buy a DIY kit for most repairs, and they can make a small mark look better. Where they fall down is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler frequently lifts.
A DIY attempt isn’t a disaster. We take the old repair out and do it properly, so it won’t stop us repairing it. It does add a little time, so tell us about it when you send photos.
What we do, step by step
From the moment we arrive, the aim is to do the job without disturbing the rest of your home. We mask off everything nearby, the job takes a few hours, depending on what we find, and we finish by cleaning up and talking you through the result.
- We clean the frame or panel.
- Next we fill the damage.
- We smooth the repair.
- We match the colour, including woodgrain finishes.
- We blend the repair into the surrounding surface.
Preparing for the visit
- Keep pets and children out of the room while we work
- Let the surface dry out before the visit
- Mention if the room is upstairs or in a flat
Get a quote
A quote takes minutes to ask for: take one close-up and one wider shot of the window, door or sill, include your postcode and send them over. What comes back is a fixed price, not a guess.
Read more
Repairing versus replacing in Thornhill
Replacing the frame or sill is a much bigger job, and new uPVC may not match the weathered frames around it. Repairing the damage keeps the original. Our uPVC repair starts from £95. It helps to know what pushes a price up or down: access, material, the extent of the damage and whether we can do several items together. Photos let us give you a fixed figure.
Why book with us
- Same prices wherever you are
- Work done at your home or business
- Free fixed quotes from pictures
- Colour-matched on site
See our prices page.
Do you need uPVC repair in Thornhill?
uPVC is tough but not indestructible: ladders and building work leave scratches and chips, candles and cigarettes burn sills, and old fittings leave holes.
It’s worth getting a quote if you see:
- Damage during building work
- Scratches from ladders and furniture
- Holes from removed fittings and alarms
- Chips and dents
Questions to ask before you book
- When it can be used again
- How to care for the finish
- What happens if they find more damage
- Whether a trained technician does the job
Also near Thornhill
More services for Thornhill
About Thornhill
Thornhill is about 2 miles south-east of Caerphilly, in Caerphilly. We agree a date that works for you, and you will know when to expect us, so there’s no waiting around. Our repair technicians cover 94 places in Caerphilly.
Here we cover the CF83 postcode area. If you’re just outside Thornhill, we cover Wenallt (1 mile south), Van (1 mile north), Castle Park (1 mile north), Beddau (2 miles north-west) and Watford Park (2 miles north-west). Larger places within reach include Blackwood (8 miles north), Risca (6 miles north-east), Ystrad Mynach (7 miles north), Cefn Fforest (8 miles north), Pontllanfraith (7 miles north) and Trecceln (9 miles north).
What’s near Thornhill
In Thornhill, that means homes near St Martin's School, Travellers Rest Inn and Church of St Martin. Thornhill’s nearest station is Caerphilly station, about 1.2 miles north of the centre. Nearby you will also find Morgraig Castle (within half a mile south-east) and St Martins (0.7 miles north). For a walk, there is Roath Park Lake and Glamorgan Canal / Long Wood.
About our accreditations · Every repair comes with a one-year guarantee.
