Neath Port Talbot · Wales
Bath & shower resealing (mastic) in Tonmawr, Neath Port Talbot
Bath resealing across Tonmawr and nearby, typically in one visit and guaranteed for a year.
- Discoloured, yellow sealant
- Missing sealant behind the taps
- Water getting behind the bath or tray

Bath resealing in Tonmawr, done in place
All of the old sealant is cut out, deal with any mould, and apply fresh mould-resistant silicone. We do this for baths, showers, sinks and worktops, and that includes the awkward spots behind the taps. Typical jobs include silicone smeared on tiles and silicone coming away from the tiles, across shower trays & enclosures, basins & vanity units and wet rooms.
Your repair is guaranteed for a year, as with every job we do.

- Area
- Tonmawr (SA12)
- County
- Neath Port Talbot
- Cover
- One year on every repair
- Quotes
- Free and fixed, from your pictures
- Telephone
- 0345 017 0787
- Last updated
- 23 October 2026
Resealing in Tonmawr: why it matters
Putting new silicone over old does not last. It peels within weeks, and traps mould underneath. A proper reseal removes the old first. What it costs depends on the type and amount of damage, what it’s made of and how many jobs we combine into one visit. We give a fixed price from your photos, so there are no surprises on the day.
Why choose Surface Doctor in Tonmawr
- Free fixed quotes from pictures
- Work done at your home or business
- Every repair guaranteed for a year
- Nothing taken out or refitted
Read our prices page.
Towns and villages near Tonmawr
What else we do in Tonmawr
Landlords, agents and businesses in Tonmawr
For anyone letting property in or around Tonmawr, we’ll quote for several properties at once. Send pictures for each one and we’ll price them together.
We work for landlords, letting agents and housing providers in Tonmawr as well as householders. A repair between tenants keeps the property empty for less time, and it costs much less than replacing.
Materials and what they mean for the repair
Shower trays
We put weight on a tray before sealing it, for the same reason.
Baths
Baths are resealed with water in them, so the joint is at its widest.
Honest limits
We will not take on work that will not last, so here’s what a repair can’t put right:
- A bath or tray that moves, until its support is fixed
- Rotten walls or floors behind the bath
- Gaps so wide they need filling or trims before sealing
Not sure? Send photos and we’ll give you a straight answer.
What we work on
- Shower trays & enclosures
- Kitchen worktops & sinks
- Baths
- Wet rooms
- Basins & vanity units
Questions from Tonmawr
Can you do more than one item on the same visit?
Of course, and it usually saves money. Send pictures of everything together and you’ll get one combined price.
How do I stop mould in sealant?
Mostly moisture and poor ventilation. We use mould-resistant silicone, and ventilation helps it last.
Do you seal over the old sealant?
All the old sealant comes out. Fresh silicone does not stick to old.
Can you redo someone else’s repair?
Yes, regularly. Removing the old work can add time, and that’s in the quote.
Is my repair covered?
All our work carries our one-year guarantee. We will explain what it covers when we quote.
Do you work in Tonmawr?
Yes. We work across the UK and travel to Tonmawr and the rest of Neath Port Talbot. Send us pictures for a fixed quote, or call 0345 017 0787.
What happens if you find more damage?
If we find something the pictures didn’t show, we explain it first. You decide whether to go ahead.
Can you quote from photos?
Nearly always. We only ask to see it in person if the photos can’t show what we need.
The process
We turn up at the time we agreed with you, introduces themselves and checks the damage against your photos first. Dust sheets and masking tape go down before we open a single tin. The work itself takes a couple of hours, and we leave the room as we found it.
- We protect the area and mask the joint lines.
- Old sealant and residue are removed.
- We clean, treat and dry the joint.
- We run a continuous bead of new silicone.
- The bead is smoothed, the tape removed and the seal left to cure.
Getting ready for the visit
- Ensure the area is dry
- Tell us about any previous repairs or coatings
- Plan for the room to be out of bounds to pets and children
Ask for a price
Getting a quote takes a couple of minutes: take one close-up and one wider shot of the bath or shower, add your postcode and send them to us. You will get a fixed price, not an estimate.
Advice
Signs you need bath resealing in Tonmawr
Joints split if the bath or tray moves, often because it was sealed with the bath empty.
You may need us if you’ve spotted any of these:
- A messy previous reseal
- Black spots in the silicone
- Water getting behind the bath or tray
- Sealant that’s split or lifting
Before you book anyone
- Whether the colour is mixed to match
- How to care for the finish
- Is the price fixed, and does it include VAT?
- What preparation is included
Aftercare tips
After the repair has cured, a few habits help it last:
- Replace the seal when mould sets in
- Dry the seal after bathing
- Ventilate the bathroom well
- Clean the sealant gently and regularly
Use the extractor fan, dry the joints after bathing, and give them a regular clean with a mild cleaner to slow mould growth.
Reseal before water gets in. Split or lifting sealant is a sign it’s time.
Should I try a DIY kit first?
It’s natural to want to try a repair yourself. The risk is that a kit repair hides the damage for a while, then fails, and then the old filler has to be removed first.
What a professional repair adds is preparation, colour matching and finishing. 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.
About Tonmawr
Tonmawr is about 3 miles east of Neath, in Neath Port Talbot. Customers in Tonmawr get the same service as everywhere else we cover: a fixed quote from your pictures, and a technician at your door on the day. We work in 100 places across Neath Port Talbot.
We cover every part of the SA12 postcode area and the streets around it. That includes homes on Maes-Gwyn, Ton-Mawr Road and Dan-y-Coed. If you are just outside Tonmawr, we cover Efail Fach (1 mile south-west), Michaelston (1 mile east), Pontrhydyfen (1 mile south), Rock (2 miles south) and Pwll-y-glaw (2 miles south). Larger places within reach include Neath (3 miles west), Port Talbot (5 miles south-west), Sandfields (5 miles south-west), Mount Pleasant (3 miles west), Baglan Moors (4 miles south-west) and Sandfields West (5 miles south-west).
What’s near Tonmawr
Typical jobs here are in homes near The Colliers pub and Cefn Saeson Comprehensive School and the streets around them. The nearest railway station is Neath station, about 3.1 miles west. Other landmarks nearby include Neath Museum (2.9 miles west) and Tonna Hospital (2.2 miles north-west). Not far away are Cefn Morfudd and Gnoll Estate Country Park lake 1.
- Parks and local facilities nearby include Pelenna (0.9 miles south-west)
About our accreditations · Every repair comes with a one-year guarantee.

