Cardiff · Wales
Bath & shower resealing (mastic) in St Nicholas, Cardiff
Bath resealing for St Nicholas, without a refit. Get a fixed price from your photos, then book a visit.
- Silicone smeared on tiles
- Gaps in the seal
- Missing sealant behind the taps
Bath resealing in St Nicholas, done in place
The key to a good reseal is getting all of the old silicone out. Fresh sealant doesn’t stick to old, which is why so many DIY reseals peel. We regularly repair shower trays & enclosures, kitchen worktops & sinks and wet rooms, and the jobs we see most are black spots in the silicone and a messy previous reseal.
We stand behind the work with a one-year guarantee, so you’re not left on your own once we have gone.
- Area
- St Nicholas (CF5)
- Area hub
- Cardiff
- Guarantee
- One year on every repair
- Quote
- Free, fixed quote from pictures
- Call
- 0345 017 0787
- Updated
- 23 October 2026
Resealing in St Nicholas: why it matters
Resealing is a small job. Leaving split or mouldy sealant lets water get behind the bath or tray, which costs far more to put right. A repair generally costs much less than people expect, especially compared with replacing and refitting. Send photos and we’ll give you the exact figure.
Why St Nicholas clients choose us
- Nothing taken out or refitted
- One price list for the entire UK
- Free fixed quotes from pictures
- One visit for most repairs
Take a look at our full price list.
Honest limits
A few problems are outside what a surface repair can do:
- Loose tiles, which need refixing first
- Very wide gaps that need a trim
- A bath or tray that moves, until its support is fixed
Not sure? Send photos and we will give you a straight answer before you book.
What we work on
- Shower trays & enclosures
- Baths
- Kitchen worktops & sinks
- Basins & vanity units
- Wet rooms
Aftercare tips
How the surface is treated afterwards matters. Here’s what we suggest:
- Run the extractor fan during and after showers
- Store bottles on a shelf
- Reseal when black spots will not clean off
- Wipe the joints dry after use
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. Gaps or lifting edges mean it needs doing.
How it works
The work is clean and fairly quiet. Protection goes down first, then the job itself takes about two hours for a bath. Before we leave, we explain how soon it can be used and how to care for it.
- We protect the area and mask the joint lines.
- Old sealant and residue are removed.
- We clean, treat and dry the joint.
- Fresh silicone is applied in a continuous bead.
- The bead is smoothed, the tape removed and the seal left to cure.
Getting ready for the visit
- Let us know if it has been repaired before
- Make sure the area is dry
- Move bottles, mats and clutter away from the area
How to get a price
Upload pictures of the damage and one of the entire item, with your CF5 postcode, and we will come back with a fixed quote.
Read more
What your bath or shower is made of matters
Shower trays
Trays are sealed with weight on them, for the same reason.
Sinks and worktops
Basins, vanity units and kitchen worktops are resealed too, once the joint is completely dry.
Places near St Nicholas
More services for St Nicholas
Prices and what affects them
There’s no charge for travel to St Nicholas. The price depends on:
- Previous DIY repairs that have to come out
- How hard the colour is to match
- How easy the damage is to reach
- The type of damage
The price depends on the type and amount of damage, the material and how many items we do on one visit. We give a fixed price from your photos, so you know the cost before booking.
Getting a price from photos
A couple of clear pictures is all it takes. It helps if you send:
- The material, if you know it
- Your postcode, so we can check dates
- A coin or ruler next to the damage for scale
- A close-up of the damage, in focus
The quickest way to a price is to send two or three photos using our quote form or call us. We’ll tell you honestly if a repair is the right fix.
Should I try a DIY kit first?
You can buy a DIY kit for most repairs, and they can tidy up a tiny mark. The trouble is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler frequently lifts.
It’s natural to want to try a repair 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.
Where we work around St Nicholas
St Nicholas (Welsh: Sain Nicolas) is about 4 miles north-west of Barry, in Cardiff. We agree a date that works for you, and you’ll know when to expect us, so there is no waiting around. Our technicians cover 91 places in Cardiff.
Every address in CF5 is covered, from the main roads to the quietest streets. Other places close to St Nicholas include Wyndham Park (1 mile north-west), St Nicholas and Bonvilston (1 mile south-west), Bonvilston (1 mile west), Peterston-super-Ely (1 mile north-west) and Pendeulwyn (2 miles north-west). Within a short drive, we also cover Cardiff (6 miles north-east), Ely (3 miles north-east), Castle (6 miles east), Adamsdown (7 miles east), Roath (7 miles east) and Splott (7 miles east).
What’s near St Nicholas
Typical jobs here are in homes near St Nicholas C.I.W. Primary, Mary Immaculate High School and St Nicholas's Church. St Nicholas’s nearest station is Waun-Gron Park station, roughly 3.8 miles north-east of the centre. Further afield, we also cover the area around South Glamorgan (2.7 miles north) and Cythrel Castle (0.7 miles west). Open spaces near St Nicholas include Glamorgan Canal / Long Wood and Caia Hill.
Common problems we fix in St Nicholas
Most reseals are because of black mould. It grows into the sealant itself, so cleaning only removes the surface.
Look out for any of the following:
- Old sealant that looks dirty
- Gaps in the seal
- Black spots in the silicone
- Gaps by the taps
What your quote should include
- How the colour is matched
- What happens if they find more damage
- Whether a trained technician does the job
- How long the guarantee is and what it covers
FAQs for St Nicholas
Why does my sealant keep going mouldy?
Usually poor ventilation and moisture sitting on the joint. We use mould-resistant silicone, and ventilation helps it last.
Can I get a quote without a visit?
Nearly always. We only ask to see it in person if the photos cannot show what we need.
How do I book?
Photos of the damage, a photo of the whole bath or shower and your postcode. After that, we just agree a date.
Is there a guarantee?
Yes, for a year. If anything goes wrong with the repair within the year, we return to fix it.
Are you a vetted contractor?
We hold CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile accreditations.
How long before I can shower?
Usually after around 24 hours. We will tell you the exact time.
What happens if you find more damage?
The price is fixed for what the pictures show. If there’s more, we will tell you before starting.
How long does resealing take?
Around two hours for a bath, plus curing time.
About our accreditations · Every repair comes with a one-year guarantee.
