Swansea · Wales
Bath & shower resealing (mastic) in Carn-glas, Swansea
Bath, shower and sink resealing with new mould-resistant silicone for homes and businesses in Carn-glas and across Swansea. Free, fixed quotes from your photos.
- Black spots in the silicone
- Gaps by the taps
- Old sealant that looks dirty

Is resealing worth it?
Resealing costs very little, and it protects everything around the bath. Failed sealant can lead to water damage that is much more expensive. The price reflects the work involved, not where you live. You’ll see the full price before you book, with no extras added later.
Why choose Surface Doctor in Carn-glas
- Honest advice, even when it means no job
- No need to remove anything
- Rooms protected and left tidy
- Work done at your home or business
See our full price list.
About our bath resealing in Carn-glas
The key to a good reseal is getting all of the old silicone out. Fresh sealant doesn’t stick to old, which is why many DIY jobs peel. Our technicians work on basins & vanity units, shower trays & enclosures and wet rooms, and common reasons people contact us are stained silicone and gaps by the taps.
All of our repairs are guaranteed for twelve months. If something goes wrong with the work, we come back.

- Where
- Carn-glas (SA2, SA5)
- County
- Swansea
- Warranty
- A year, on every repair
- Quote
- Fixed and free, based on pictures
- Phone
- 0345 017 0787
- Page updated
- 23 October 2026
More services for Carn-glas
What affects the price in Carn-glas
There are no hourly rates or hidden extras. The price depends on:
- Whether it’s a chip, crack, burn or wear
- How many items we do on one visit
- The material and finish
- How easy the damage is to reach
Compared with replacing, repairing usually costs far less, because nothing has to be taken out, refitted or made good. The quote lists exactly what you are paying for.
Getting a price from photos
When you take your photos, these tips help us give you a firm price:
- Where you are, by postcode
- Whether it’s been repaired or coated before
- The material, if you know it
- Good light, ideally daylight, without flash glare
You don’t need a survey visit. Photos are enough for us to price nearly every job: we need a close-up, a wider picture and your postcode, and we’ll come back to you with a fixed figure.
Carn-glas questions
Do I have to be there?
Yes. We need access to the room while we work, at a time that suits you.
Is there a guarantee?
Yes, for a year. If anything goes wrong with the repair within the year, we return to fix it.
How long will it take?
Usually a couple of hours, then it needs to cure.
Can you price it without visiting?
Generally, yes. A close-up and a wider photo are enough to give a fixed price.
What information do you need?
Send photos through the quote form or call 0345 017 0787, and we will do the rest.
Why does the silicone keep cracking?
Usually because the bath or tray moves, or it was sealed with the bath empty. We fill the bath before sealing it.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure the landlord agrees.
Can you repair something that is been repaired before?
In most cases. We remove the old repair before doing a new one, so let us know about it.
Repairs by material
Shower trays
Trays are sealed with weight on them, so the joint is at its widest.
Sinks and worktops
We reseal basins, vanity tops and kitchen worktops, once the joint is completely dry.
Where we work around Carn-glas
Carn-glas is about 2 miles west of Swansea, in Swansea. Our work suits any type of property, old or new, large or small, plus businesses and rented homes. We cover 153 places in Swansea.
Here we cover the SA2 and SA5 postcode area. You’ll find streets such as Gower Road, Tycoch Road and Rowan Avenue. Close by, we cover Garn-Las (1 mile south), Tycoch (1 mile south-east), Penyrheol (1 mile south), Sketty (1 mile south-east) and Cockett (1 mile east). Within a short drive, we also cover Morriston (4 miles north-east), Gorseinon (4 miles north-west), Landore (3 miles north-east), Llwchwr (3 miles north-west), Mumbles (3 miles south) and Waterfront (3 miles east).
Near you in Carn-glas
Around Carn-glas, we work in homes near St Paul's Church, Olchfa School and Toby Carvery Killay pub. Nearby too are Glanmôr School (0.9 miles east) and Sketty Primary School (within half a mile north-east). The nearest railway station is Gowerton station, roughly 2.3 miles north-west of the centre. Nearby you will also find Cefn Coed Hospital (less than half a mile north-east) and Quadrant Shopping Centre (2.2 miles east). Not far away are Carnglas Hill and Bishop's Wood.
Should I try a DIY kit first?
For a hairline mark somewhere you’ll never see, a kit may be enough. For anything you look at every day, anything that has rusted, cracked or holed, or anything on a coloured surface, a professional repair is worth it.
It’s tempting to reach for a kit, but the repairs we redo most frequently are DIY ones that have discoloured or lifted. Doing it properly first is usually the cheaper route.
Do you need bath resealing in Carn-glas?
Joints split if the bath or tray moves, frequently because it was sealed with the bath empty.
The most common problems we are called about are:
- Silicone smeared on tiles
- Discoloured, yellow sealant
- Damp near the bath
- Black spots in the silicone
Before booking anyone
- Whether a trained technician does the job
- What prep work is covered
- What the guarantee covers, and for how long
- What protection goes down before work starts
Looking after it afterwards
Good habits make a big difference to how long a repair lasts:
- Do not stand toiletries on the seal
- Let steam out after showers
- Replace the seal when mould sets in
- Clean the joints with a mild cleaner
Avoid scraping the joints, and do not stand bottles on the seal.
Reseal before water gets in. Gaps or lifting edges mean it needs doing.
The process
Arrival times are agreed in advance, so you’re not left guessing. Once we’re there, the work takes a couple of hours in most cases. The room is left tidy and you’ll know when it can be used.
- The old silicone is cut out completely.
- We remove the residue and clean the joint.
- We treat mould and dry the joint thoroughly.
- We fill the bath, or weight the tray, to open the joint.
- We apply fresh mould-resistant silicone and tool a neat bead.
Before we arrive
- Keep a parking space free if you can
- Make sure the area is dry
- Open a window if you can
Ask for a price
Getting a quote takes a couple of minutes: photograph the damage, then the entire bath or shower, add your postcode and send them to us. You will get a fixed quote, not an estimate.
Advice
When we would advise against a repair
We’ll always be straight with you, so here’s what a repair can’t fix:
- A bath or tray that moves, until its support is fixed
- Hidden water damage
- Very wide gaps that need a trim
If in doubt, send photos and we will say what we think.
What we work on
- Shower trays & enclosures
- Basins & vanity units
- Wet rooms
- Kitchen worktops & sinks
- Baths
About our accreditations · Every repair comes with a one-year guarantee.

