Merthyr Tydfil · Wales

Bath Resealing for Trelewis homes

We travel to Trelewis for bath, shower and sink resealing with new mould-resistant silicone. Nothing is taken out, and the work is guaranteed.

  • Unsealed corners
  • A messy previous reseal
  • Black mould in the sealant
Surface Doctor technician refinishing the outside of a roll-top bath

Bath resealing for Trelewis homes

DIY kit or professional repair?

A DIY attempt isn’t a disaster. We remove the old filler and start again, so it won’t stop us repairing it. It does add a little time, so tell us about it when you send pictures.

DIY kits are sold for most surfaces, and they can make a small mark look better. Where they fall down is colour and preparation: they come in a handful of shades, and if the surface isn’t prepared the repair won’t last.

Bath resealing in Trelewis without replacing anything

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. Whether it’s a messy previous reseal and gaps by the taps, we can help.

All of our repairs are guaranteed for twelve months, and the guarantee is the same wherever you live. If something goes wrong with the work, we come back.

Where
Trelewis (CF46)
Region
Merthyr Tydfil
Cover
A year, on every repair
Price
Free, fixed quote from pictures
Call
0345 017 0787
Page updated
23 October 2026
Surface Doctor technician refinishing the outside of a roll-top bath

What your bath or shower is made of matters

Baths

We fill the bath before sealing, to open the joint fully.

Shower trays

We put weight on a tray before sealing it, for the same reason.

The process

We work cleanly and quietly, so you can carry on at home. Protection goes down first, then the job itself takes around two hours. Before we leave, we explain the curing time and the aftercare.

  1. All the old sealant is cut out and removed.
  2. We clean the joint and treat any mould.
  3. We make sure the joint is completely dry.
  4. For a bath, we fill it with water first so the joint is at its widest.
  5. We run a new bead of mould-resistant silicone and smooth it neatly, including around the taps.

How to prepare

  • Keep a parking space free if you can
  • Have a window or extractor fan available
  • Mention if the room is upstairs or in a flat

Ask for a price

Getting a price is easy: snap the damage close up and then the whole item, send them over with your postcode, and we’ll reply with a fixed price. There’s no charge for the quote and no obligation.

Get a fixed quote

Related advice

Keeping it looking good

A little care keeps the finish looking good. Our advice:

  • Reseal when black spots won’t clean off
  • Give the seal a regular clean
  • Keep bottles off the joints
  • Run the extractor fan during and after showers

Use the extractor fan, dry the joints after bathing, and give them a regular clean with a mild cleaner to slow mould growth.

Damp below or loose tiles need checking quickly. It may be more than a reseal, and we will say if you need a builder or plumber.

Common problems we fix in Trelewis

Even good sealant eventually discolours, especially in a busy family bathroom. Steam, soap and movement all wear it down.

These are the problems we are asked about most:

  • Water getting behind the bath or tray
  • Silicone coming away from the tiles
  • Gaps by the taps
  • Silicone smeared on tiles

Before booking anyone

  • How the room is protected while they work
  • Whether cleaning and preparation are in the price
  • Whether a trained technician does the job
  • How to look after the finish

Choosing a repair company

What we can’t put right

Honesty matters more than a booking, so here’s what a repair can’t fix:

  • Rotten walls or floors behind the bath
  • Tiles that move, until they’re refixed
  • Very wide gaps that need a trim

Send us pictures and we’ll tell you honestly.

Materials we work on in Trelewis

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

About Trelewis

Trelewis is about 4 miles east of Mountain Ash, in Merthyr Tydfil. Whether you are in the middle of Trelewis or on the outskirts, the service is the same: a fixed price, a tidy visit and a guarantee. Trelewis is one of 52 places in Merthyr Tydfil we cover.

Every address in CF46 is within our area, from the main roads to the quietest streets. We regularly work on streets such as High Street, Beechcroft and Nant Gwyn. Neighbouring places we cover include Nelson (1 mile south), Tai'r-heol (1 mile south), Llancaiach (2 miles south-east), Gelligaer (2 miles east) and Penybryn (2 miles east). Within a short drive, we also cover Merthyr Tydfil (7 miles north-west), Gurnos (8 miles north-west), Park (8 miles north-west), Thomastown (7 miles north-west), Glebeland (7 miles north-west) and Morgantown (7 miles north-west).

Near you in Trelewis

Around Trelewis, we work in homes near Ffaldaiach Inn and Trelewis Primary School, among other places. For rail, the closest station is Quakers Yard station, roughly 1.4 miles west of the centre. A little further out are Twyn Castell (1.8 miles east) and Ystrad Mynach Hospital (3.2 miles south-east). For a walk, there’s Goitre Coed and Pwll Waun Cynon.

Map of Trelewis © OpenStreetMap contributors

FAQs for Trelewis

Is repairing better than replacing?

In most cases, yes. Replacement brings removal, refitting and making good, which a repair avoids. We will be honest if it’s not worth it.

Can tenants book a repair?

Yes. Check with your landlord; we can send the quote to them too.

Do you cover Trelewis?

We do. Technicians travel to Trelewis from across the region, with no extra charge for travel.

Why does the silicone keep cracking?

Movement is the usual cause, or it was sealed with the bath empty. We seal baths full of water.

It’s been repaired before. Can you still fix it?

Yes, regularly. Removing the old work can add time, and that’s in the quote.

How long will it take?

Normally a couple of hours, plus curing time.

How long does silicone take to cure?

Usually after around 24 hours. We’ll tell you the exact time.

Do you do work for letting agents?

We do, regularly. We can quote for several properties together and work between tenancies.

Prices and what affects them

There are no hourly rates or hidden extras. The price is based on:

  • The colour and finish to match
  • Doing more than one item at once
  • Any earlier repairs that need removing first
  • The material

Most people are surprised how affordable a repair is, particularly next to the cost of replacement. Photos let us give you the exact figure.

How to get a fixed quote

Almost every job we do is priced from pictures. This is what to send:

  • Natural light rather than flash
  • A wider photo showing the whole bath or shower
  • A clear, close picture of the problem area
  • Any earlier repairs or coatings

For most jobs, pictures are all we need to give you a price. Add a line about what happened and your postcode, and we’ll reply with a fixed quote and the earliest dates we have.

For landlords and businesses

Builders use us to fix snagging damage before handover, saving last-minute replacements. We can visit several plots in one trip to keep costs down.

For anyone letting property in or around Trelewis, we will quote for several properties at once. Just send photos for each address and we’ll price them together.

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.