Monmouthshire · Wales
uPVC window & door repair in Pen-twyn, Monmouthshire
Scratch, chip, burn and hole repairs to uPVC windows, doors and sills in Pen-twyn, carried out at your home and guaranteed for a year.
- Repairs from £95
- Holes from removed fittings and alarms
- Damage during building work

About our uPVC repair in Pen-twyn
Builders and developers use us for snagging repairs too. The damage is filled and refinished so it blends into the frame, woodgrain finishes included. Our repair technicians work on coloured and woodgrain uPVC, doors & door panels and white uPVC, and common reasons people get in touch are damage during building work and holes from removed fittings and alarms.
You get a one-year guarantee, the same in Pen-twyn as everywhere else we work. Warm soapy water and a soft cloth are all it needs. Avoid solvents and abrasive cleaners.

- Location
- Pen-twyn (NP25)
- County
- Monmouthshire
- Guarantee
- 12 months on all our work
- Quote
- From £95. Free and fixed, from your photos
- Phone
- 0345 017 0787
- Updated
- 23 October 2026
What we do, step by step
You don’t need to empty the room. Everything we use comes in the van with us, lay protective sheets and start once you are happy with the plan. It generally takes a morning or an afternoon, and you are welcome to carry on with your day while we work.
- We clean the frame or panel.
- Scratches, chips and holes are filled.
- The repair is sanded smooth.
- We match the colour, including woodgrain finishes.
- The repair is blended into the surface around it.
Before we arrive
- Clear the area around the damage
- Mention if the room is upstairs or in a flat
- Keep children and pets away from the room on the day
Ask for a price
Getting a quote takes a couple of minutes: photograph the damage, then the whole window, door or sill, add your postcode and send them over. You’ll get a fixed price, not an estimate.
Related advice
What a repair cannot fix
A repair isn’t always the answer, and we would rather say so up front. Repairs won’t solve:
- Failed or misted double glazing units
- Broken locks, hinges or mechanisms
- Frames that are warped or out of square
Not sure? Send pictures and we will give you a straight answer.
Materials we work on in Pen-twyn
- White uPVC
- Conservatory frames
- Coloured and woodgrain uPVC
- Window frames & sills
- Doors & door panels
Should I try a DIY kit first?
You can buy a DIY kit for most repairs, and they can make a small mark look better. The trouble is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler often lifts.
The difference between a kit and a professional repair is mostly in the preparation and colour. We clean and key the area properly, mix the colour to your surface and finish it to the same sheen, then guarantee it for a year.
How we price uPVC repair
Prices start from £95. There are no hourly rates or hidden extras. The price is based on:
- The material and finish
- The colour and finish to match
- How easy the damage is to reach
- How many areas need work
We do not add extras on the day. The price we quote from your pictures is the price you pay, unless the damage turns out to be different, in which case we talk to you first.
Send pictures for a quote
Photographing the damage takes a minute. Please include:
- A photo taken from further back
- Where you are, by postcode
- The material, if you know it
- A coin or ruler next to the damage for scale
There is no need for us to visit first. Nearly every job can be priced from pictures: we need a close-up, a wider picture and your postcode, and we will reply with a fixed quote.
Pen-twyn: your questions answered
Can landlords book you?
Yes. We work for landlords, agents, builders and businesses as well as householders across Monmouthshire.
Do I have to be there?
Someone needs to let us in and show us the job. After that, you can carry on with your day.
Can a burnt window sill be fixed?
Yes. The burn is filled and refinished to match.
Do you come to Pen-twyn?
Yes. We cover the entire UK and travel to Pen-twyn. Send us photos for a fixed quote, or call 0345 017 0787.
Can you repair something that’s been repaired before?
Most of the time. Tell us what was done before and we’ll plan for it.
Is the work guaranteed?
Every repair comes with a one-year guarantee. Ask us what it covers when you get your quote.
Can you match woodgrain uPVC?
Yes. Colour and grain are matched by hand.
Will you leave a mess?
Very little mess: we sheet and mask everything nearby, and we leave the room clean.
Landlords, agents and businesses in Pen-twyn
We carry out planned and one-off repairs for housing associations and facilities teams. A repair avoids taking out and refitting, which matters when someone is living in the home.
Rental properties take more wear, and replacing items every time a tenant leaves is expensive. A repair between tenancies is a cheaper way to keep the property in good order.
Repairing versus replacing in Pen-twyn
A new window, door or sill is a much bigger job, and it may not match the rest after years of weathering. A repair leaves the unit in place. Our uPVC repair starts from £95. Instead of hourly rates, we fix the price before we start. It depends on the damage, the material and access.
Why choose Surface Doctor in Pen-twyn
- Repair technicians who travel to you, UK-wide
- No extra charge for your area
- Everything repaired in place
- Free fixed quotes from pictures
Read our full price list.
Places near Pen-twyn
More services for Pen-twyn
What we are called out for in Pen-twyn
uPVC is hard-wearing, but it does get damaged: ladders, tools and building work scratch and chip it, candles and cigarettes burn sills, and removed fittings leave holes.
It’s worth getting a quote if you see:
- Burns on sills
- Chips and dents
- Holes from removed fittings and alarms
- Damage during building work
Before booking anyone
- How to look after the finish
- What happens if they find more damage
- How long it needs to cure
- Is the price fixed, and does it include VAT?
Pen-twyn and the surrounding area
Pen-twyn is about 10 miles north of Chepstow, in Monmouthshire. Wherever you are in the NP25 postcode area, we carry out the work at your property. Our technicians cover 115 places across Monmouthshire. You can also see our page for Birmingham, about 59 miles away.
Jobs in NP25 are booked in the same way as anywhere else. You’ll find streets such as Pentwyn Park and Green Pastures. We also travel to Penallt (1 mile north-east), Lower Redbrook (1 mile east), Upper Redbrook (1 mile north-east), The Narth (2 miles south) and Newland (2 miles east). Further out, we also cover Chepstow (10 miles south), Abergavenny (14 miles west), Cil-y-coed (13 miles south), Pen-y-pound (14 miles west), Bulwark (10 miles south) and Cantref (15 miles west).
Local landmarks in Pen-twyn
We visit homes around Redbrook Church of England Primary School, Penallt Old Church and The Inn at Penallt. Nearby you’ll also find Cinderbury Iron Age Experience (3.6 miles east) and Monnow Vale Integrated Health and Social Care Facility (2.5 miles north-west). For a walk, there is Church Hill and Prisk Wood.
About our accreditations · Every repair comes with a one-year guarantee.

