Caerphilly · Wales
Bath & shower resealing (mastic) in Waterloo, Caerphilly
We travel to Waterloo for bath, shower and sink resealing with new mould-resistant silicone. Nothing is taken out, with a one-year guarantee.
- Silicone smeared on tiles
- Old sealant that looks dirty
- Black mould in the sealant

Keeping it looking good
Simple care helps the repair last. Our advice:
- Give the seal a regular clean
- Reseal when black spots will not clean off
- Wipe the joints dry after use
- Store bottles on a shelf
Use the extractor fan, dry the joints after bathing, and give them a regular clean with a mild cleaner to slow mould growth.
Do not wait until water gets behind the bath. Gaps or lifting edges mean it needs doing.
About our bath resealing in Waterloo
We reseal baths with them filled with water, so the joint is at its widest, which stops the new seal tearing the first time the bath is used. Our repair technicians work on baths, shower trays & enclosures and wet rooms, and common reasons people get in touch are discoloured, yellow sealant and leaks at the edges.
A one-year guarantee comes as standard, so you’re covered after the visit.

- Where
- Waterloo (CF83)
- County
- Caerphilly
- Guarantee
- A year, on every repair
- Quote
- Fixed and free, based on photos
- Telephone
- 0345 017 0787
- Updated
- 23 October 2026
What a repair can’t fix
Before booking, it’s worth knowing the limits:
- Loose tiles, which need refixing first
- Rotten walls or floors behind the bath
- Gaps too big for silicone alone
Not sure? Send pictures and we will give you a straight answer.
What we work on
- Basins & vanity units
- Kitchen worktops & sinks
- Wet rooms
- Shower trays & enclosures
- Baths
Places near Waterloo
Also in Waterloo
For landlords and businesses
For developers and builders, we fix damage before handover, so there’s no need to replace a damaged item at the last minute. We can visit several plots in one trip to keep costs down.
Hospitality businesses can’t afford rooms out of action for long, so most of our work is done in a single visit. We’ll fit around changeovers where we can.
Waterloo questions
How do I book?
Send photos through the quote form or call 0345 017 0787, and we’ll take it from there.
Are you a vetted contractor?
We are accredited with CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile.
Do you work in Waterloo?
Yes. We cover the whole UK and travel to Waterloo. Send us pictures for a fixed quote, or call 0345 017 0787.
What happens next?
We come back with a fixed price. There is no obligation to book.
Will it make a mess?
No. The work area is masked and covered, and we take our waste away with us.
Can landlords book you?
Yes. We work for landlords, agents, builders and businesses as well as householders.
How long does resealing take?
Most reseals take about two hours. Leave it to cure before use.
My seal keeps tearing. Why?
The bath or tray is probably flexing. Persistent splitting can mean the support needs attention.
Resealing in Waterloo: why it matters
Resealing costs very little. Leaving failed sealant can let water cause damage that costs far more to fix. The price depends on how much damage there is and what kind, what it’s made of and how many jobs we combine into one visit. You get a fixed price from your pictures, so there are no surprises on the day.
Why choose Surface Doctor in Waterloo
- No extra charge for your area
- CHAS, Constructionline and SafeContractor accredited
- Honest advice, even when it means no job
- A fixed quote before you book
Take a look at our prices page.
DIY repairs versus a professional job
We understand the appeal of fixing it yourself. The trouble is that kit repairs often look fine at first and then fail, and the old filler has to come out before a proper repair.
A kit can be fine for a tiny mark out of sight. For damage in plain view, cracks, holes or rust, or coloured finishes, it’s worth having it done properly.
What affects the price in Waterloo
Each job gets its own fixed price. This is what makes a difference:
- How many areas need work
- The type of damage
- Doing more than one item at once
- The material and finish
We do not add extras on the day. The price we quote from your pictures is the price you pay, and if the damage turns out to be different, we discuss it before starting.
Send photos for a quote
It only takes a minute to photograph the damage, and it saves a visit. Please include:
- Any details about the material
- Any earlier repairs or coatings
- One picture of the entire bath or shower
- Daylight if possible, and no flash reflection
Most customers in Waterloo get their price from pictures. Tell us what happened and where you are, and we will send back a fixed quote and some dates.
About Waterloo
Waterloo is about 3 miles east of Caerphilly, in Caerphilly. We travel to customers in Waterloo and the surrounding area, so you don’t need to take anything anywhere. We cover 94 places across Caerphilly.
All of CF83 is within our area. Whether you live on Waterloo Place, Waterloo Terrace Road and Ty'n-y-Coedcae or a nearby road, we can come to you. We also cover the places around Waterloo: Craig-y-Rhacca (1 mile north-west), Graig-y-Rhacca (1 mile north), Garth Place (1 mile south-west), Trethomas (1 mile west) and Machen (1 mile north-east). We also work in nearby towns such as Caerphilly (3 miles west), Blackwood (6 miles north), Risca (3 miles north-east), Ystrad Mynach (5 miles north-west), Cefn Fforest (6 miles north) and Pontllanfraith (5 miles north).
Local landmarks in Waterloo
Our customers here include homes close to Rudry Inn (The Monte), Graig-Y-Rhacca Primary and Nursery Community School and Church of St James and the streets around them. Waterloo’s nearest station is Caerphilly station, roughly 2.7 miles south-west of the centre. Further afield, we also cover the area around Caerphilly District Miners Hospital (3.3 miles west) and Rhyd-y-gwern (0.9 miles east). Not far away are Penhow.
Materials and what they mean for the repair
Sinks and worktops
Basins, vanity units and kitchen worktops are resealed too, once the joint is completely dry.
Baths
Baths are resealed with water in them, to open the joint fully.
How the visit works
It’s a tidy, low-fuss visit. We confirm the time with you beforehand, cover and mask the work area, and get on with the job, which normally takes a couple of hours. If anything looks different from your photos, we will talk to you before going ahead.
- We cut out all of the old sealant.
- Residue is removed and the joint cleaned.
- We treat mould and dry the joint thoroughly.
- The bath is filled with water, or weight put on the tray.
- New mould-resistant silicone is applied and tooled neatly.
Getting ready for the visit
- Let us know if it has been repaired before
- Clear toiletries, mats and anything else from around the area
- Point us to the nearest place to park
How to get a price
Getting a price is easy: take a close-up of the damage and a photo from further back, send them over with your postcode, and you’ll get a fixed quote back. There is no charge for the quote and you’re under no obligation.
Read more
About our accreditations · Every repair comes with a one-year guarantee.

