Powys · Wales
uPVC Repair in Knucklas
We travel to Knucklas for scratch, chip, burn and hole repairs to uPVC windows, doors and sills. Nothing is taken out, with a one-year guarantee.
- Repairs from £95
- Chips and dents
- Scratches from ladders and furniture

uPVC repair in Knucklas without replacing anything
Builders and developers use us for snagging repairs too. We fill and refinish the damage to match the frame, including woodgrain finishes. Whether it’s chips and dents and holes from removed fittings and alarms, we can typically put it right, whatever the material.
A one-year guarantee comes as standard, so you’re not left on your own once we’ve gone. Clean with warm soapy water and a soft cloth. Avoid solvents and abrasive cleaners.
- Where
- Knucklas (LD7)
- Area hub
- Powys
- Warranty
- 12 months on all our work
- Price
- From £95. Free, fixed quote from pictures
- Phone
- 0345 017 0787
- Updated
- 23 October 2026

Should I try a DIY kit first?
If you do try a kit, read the instructions carefully and work on a clean, dry surface, and do not use it until it has fully cured. If it does not work out, we can still repair it properly.
The difference between a kit and a professional repair is mostly in the preparation and colour. We prepare the area properly, mix the colour on site and polish the finish to match, and the work is guaranteed.
Landlords, agents and businesses in Knucklas
Rental properties take more wear, and replacing things at every changeover adds up. Repairing between tenants keeps the property presentable for less.
We’re used to working with agents and managing companies. Just send pictures, the address and how to get access and we will handle the rest.
The process
Here’s how a visit generally runs: we arrive at the agreed slot, protect everything around the work area, carry out the work and tidy away. Allow a morning or an afternoon. Before we go, we’ll explain when it can be used and what to avoid for the first few days.
- First the frame or panel is cleaned.
- Scratches, chips and holes are filled.
- The repair is sanded smooth.
- The finish is colour-matched, woodgrain included.
- Finally we blend it into the rest of the frame.
How to prepare
- Point us to the nearest place to park
- Make sure the area is dry
- Mention if the room is upstairs or in a flat
How to get a price
Email us a picture of the damage and one of the whole item, and tell us you’re in Knucklas, and we will reply with a fixed quote.
Related advice
Honest limits
To be straight with you, some problems need a different fix:
- 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’ll give you a straight answer before booking.
Materials we repair
- Window frames & sills
- Doors & door panels
- White uPVC
- Conservatory frames
- Coloured and woodgrain uPVC
Also near Knucklas
What else we do in Knucklas
Prices and what affects them
Prices start from £95. You’ll know the full cost before you book. We look at:
- What kind of damage it is
- How easy the damage is to reach
- The material
- Doing more than one item at once
There are no surprise extras on the day. What we quote from your pictures is what you pay, unless the damage turns out to be different, in which case we talk to you first.
Send photos for a quote
We price nearly every job from photos. This is what we need:
- Whether it’s been repaired or coated before
- Natural light rather than flash
- Your postcode, so we can check dates
- What it’s made of, if you know
The quickest way to a price is to send a couple of photos through our quote form or call us. We’ll tell you honestly whether it can be repaired.
Signs you need uPVC repair in Knucklas
uPVC is tough but not indestructible: ladders, tools and building work scratch and chip it, candles and cigarettes burn sills, and old fittings leave holes.
It’s worth getting a quote if you see:
- Damage during building work
- Burns on sills
- Chips and dents
- Scratches from ladders and furniture
Questions to ask before you book
- How long it needs to cure
- How changes to the job are handled
- Who will actually do the work
- Whether cleaning and preparation are in the price
About Knucklas
Knucklas (Welsh: Cnwclas) is about 14 miles south-east of Y Drenewydd, in Powys. Customers in Knucklas get the same service as everywhere else we cover: a fixed quote from photos, and a technician at your door on the day. Knucklas is one of 234 places in Powys we cover. We work right across the region, from Knucklas to Birmingham (about 51 miles away).
Jobs in LD7 are booked in the same way as anywhere else. You will find streets such as Castle Green and Glyndwr, and we cover them all. Other places close to Knucklas include Knighton (2 miles south-east), Llwyn (4 miles north-east), Churchbank (5 miles north-east), Clun (5 miles north-east) and Newcastle (5 miles north). We also work in nearby towns such as Y Drenewydd (14 miles north-west), Newtown and Llanllwchaiarn (14 miles north-west), Llandrindod Wells (15 miles south-west), Penygloddfa (14 miles north-west), Pen-y-Glodfa (15 miles north-west) and Presteigne (7 miles south-east).
Local landmarks in Knucklas
We visit homes around The Castle Inn and Church of St David. Knucklas has its own railway station: Knucklas station. Well-known places in the area include Knucklas Castle (less than half a mile north-west) and Knighton Hospital (2.3 miles south-east). Open spaces near Knucklas include Pen-y-Clawdd Pool and Castle Hill.
Questions from Knucklas
Do I need to be at home?
Yes. The technician needs access to the room for the visit, at a time we agree with you.
Will you leave a mess?
We protect the room with dust sheets and masking first, and tidy up before we leave.
Do you cover the whole of Powys?
The entire UK, including all of Powys. Just include your postcode and we will confirm dates.
What information do you need?
Photos of the damage, a picture of the whole window, door or sill and your postcode. Then we will agree a date.
Do you work for landlords and businesses?
Yes. We work for landlords, agents, builders and businesses as well as homeowners across Powys.
Can you repair a burn on a uPVC sill?
Yes. We fill and refinish the burnt area to match.
Is the work guaranteed?
Every repair comes with a one-year guarantee. Ask us what it covers when you get your quote.
Are you a vetted contractor?
We’re accredited with CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile.
Why repair rather than replace?
A new window, door or sill is a much bigger job, and new uPVC may not match the weathered frames around it. A repair leaves the unit in place. Repairs from £95, with every job priced individually. Set against the cost of replacement, repairing usually costs far less, because there’s no removal, plumbing or making good. The quote lists exactly what you are paying for.
Why choose Surface Doctor in Knucklas
- Work done at your home or business
- One visit for most repairs
- Every repair guaranteed for a year
- Honest advice, even when it means no job
See our pricing.
About our accreditations · Every repair comes with a one-year guarantee.

