Cardiff · Wales

Bath & shower resealing (mastic) in Newtown, Cardiff

Bath, shower and sink resealing with new mould-resistant silicone in Newtown, carried out at your home and guaranteed for a year.

  • Discoloured, yellow sealant
  • Gaps in the seal
  • Mould you can’t clean out
Surface Doctor technician refinishing the outside of a roll-top bath

Need bath resealing in Newtown?

When we would advise against a repair

We would rather lose a job than do one that won’t last, so here’s what a repair can’t put right:

  • A bath or tray that moves, until its support is fixed
  • Hollow or loose tiles
  • Rotten walls or floors behind the bath

If in doubt, send pictures and we’ll say what we think before you book.

Surfaces we repair

  • Baths
  • Basins & vanity units
  • Kitchen worktops & sinks
  • Shower trays & enclosures
  • Wet rooms

About our bath resealing in Newtown

A reseal is a small job that makes a big difference. Clean, white joints make a bathroom look cared for, and they protect the walls and floor. Typical jobs include discoloured, yellow sealant and unsealed corners, on shower trays & enclosures, baths and kitchen worktops & sinks.

Peace of mind is built in: each job carries a one-year guarantee, and we explain what it covers before booking.

Area
Newtown (CF10, CF24, CF11)
County
Cardiff
Guarantee
12 months on all our work
Quote
Free and fixed, from your pictures
Phone
0345 017 0787
Page updated
23 October 2026
Surface Doctor technician refinishing the outside of a roll-top bath

The process

Arrival times are agreed in advance, so you are not left guessing. On site, it takes around two hours in most cases. The room is left tidy.

  1. The surrounding area is protected and the joints masked.
  2. Old sealant and residue are removed.
  3. We clean, treat and dry the joint.
  4. Fresh silicone is applied in a continuous bead.
  5. The bead is smoothed, the tape removed and the seal left to cure.

Getting ready for the visit

  • Clear the area around the damage
  • Let us know which floor the room is on
  • Ensure the room can be ventilated

Getting 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. What comes back is a fixed quote, not a guess.

Send pictures for a quote

Advice

Can I fix it myself?

For a hairline mark somewhere you’ll never see, a kit may be enough. For damage in plain view, cracks, holes or rust, or coloured finishes, a professional repair is worth it.

You can buy a DIY kit for most repairs, and they can make a small mark look better. Where they fall down is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler often lifts.

Do you need bath resealing in Newtown?

Sealant splits when the bath or tray moves, often because it was sealed with the bath empty.

These are the problems we’re asked about most:

  • Old sealant that looks dirty
  • Missing sealant behind the taps
  • Black mould in the sealant
  • Damp near the bath

Before you book anyone

  • How long the guarantee is and what it covers
  • Who will actually do the work
  • How to care for the finish
  • What happens if the damage is worse than the photos show

Choosing a repair company

Prices and what affects them

Each job gets its own fixed price. This is what makes a difference:

  • How easy the damage is to reach
  • The colour and finish to match
  • Whether old repairs or coatings need taking off
  • Doing more than one item at once

What it costs 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 photos, so there are no surprises on the day.

Send photos for a quote

Before you send photos, these tips help us give you a firm price:

  • One sharp close-up of the damage
  • The postcode, so we can plan the visit
  • What it’s made of, if you know
  • Good light, ideally daylight, without flash glare

Ring 0345 017 0787, or send us pictures through the quote form. With one close-up and one wider picture, we can give you a fixed price without visiting.

Newtown: your questions answered

Is repairing better than replacing?

Generally, yes. Replacement brings removal, refitting and making good, which a repair avoids. If it is not worth repairing, we’ll tell you.

How soon can you come?

That depends on our diary for your area. Send pictures with your postcode and we’ll reply with the earliest dates.

What areas do you cover?

We work UK-wide. Our prices are the same everywhere.

Are you accredited?

Yes. Our accreditations include CHAS, Constructionline and SafeContractor. See our accreditations page for the full list.

Will the price change on the day?

Your quote covers the damage in the pictures. If there’s more, we will tell you before starting.

My seal keeps tearing. Why?

Generally because the bath or tray moves, or it was sealed with the bath empty. We fill the bath before sealing it.

Can you redo someone else’s repair?

Yes, we often do. It can add a little time, which we include in the quote.

How do I book?

Just pictures, your postcode and a contact number. On the day, we only need access to the room.

Keeping it looking good

Aftercare is simple:

  • Clean the sealant gently and regularly
  • Replace the seal when mould sets in
  • Keep the joints dry
  • Do not stand toiletries on the seal

Let it cure fully before using the bath or shower, typically around 24 hours.

If you notice damp, stains on the ceiling below or loose tiles, act quickly. It may be more than a reseal, and we’ll say if you need a builder or plumber.

Our work in Newtown

Newtown is about 2 miles south of Cardiff, in Cardiff. We work in every kind of home, old or new, large or small, as well as offices, shops and holiday lets. We work in all 91 towns and villages across Cardiff.

Our visits in CF10, CF24 and CF11 work the same way as everywhere else we cover. Jobs here include addresses on Mill Lane, Keen Road and Barry Lane. Main roads around Newtown include the A4234, so getting to you is simple. Nearby, we also work in Castle Quarter (1 mile north-west), Atlantic Wharf (1 mile south-east), Adamsdown (1 mile north-east), Butetown (1 mile south) and Splott (1 mile north-east). Further out, we also cover Ely (3 miles west), Caerau (3 miles west), Gwaun Treoda (3 miles north-west), St Mellons (4 miles north-east), Llanrumney (4 miles north-east) and Morristown (3 miles south). Being one of Cardiff’s larger places, Newtown is somewhere we visit frequently.

Landmarks near Newtown

Locally, our jobs take us to homes close to St Nicholas's Greek Orthodox Church, The Vulcan pub and Centre for Occupational and Health Psychology, among other places. Nearby too are Howardian High School (less than half a mile north), St Mary The Virgin C.I.W. Primary School (less than half a mile south-west) and St. John’s Gardens (under half a mile north-west). There is a railway station in Newtown itself: Cardiff Queen Street station. Other landmarks nearby include Dragon's Heart Hospital (0.6 miles west) and Royal Arcade (under half a mile west). The countryside around Newtown includes Cock Hill and Glamorgan Canal / Long Wood.

Map of Newtown © OpenStreetMap contributors

Different materials, different repairs

Sinks and worktops

We reseal basins, vanity tops and kitchen worktops, once the joint is completely dry.

Baths

Baths are resealed with water in them, to open the joint fully.

Work for landlords and builders

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.

Rental properties take more wear, and replacing things at every changeover adds up. A repair between tenancies is a cheaper way to keep the property in good order.

CHAS accredited contractor and Constructionline logos SafeContractor, SMAS Worksafe and Builder’s Profile logos

About our accreditations · Every repair comes with a one-year guarantee.

Read what customers say about us on Trustpilot.