Cardiff · Wales

Bath & shower resealing (mastic) in Pwll-mawr, Cardiff

Bath resealing across Pwll-mawr and nearby, done in a single visit in most cases.

  • Black spots in the silicone
  • Water getting behind the bath or tray
  • A messy previous reseal
Surface Doctor technician refinishing the outside of a roll-top bath

Book bath resealing in Pwll-mawr

DIY repairs versus a professional job

We understand the appeal of fixing it yourself. The trouble is that kit repairs frequently look fine at first and then fail, and then the old filler has to be removed first.

If you’ve already tried a DIY fix, that’s fine. We take the old repair out and do it properly, so it does not stop a professional repair. Just mention it when you send photos, as it can add time.

Bath resealing in Pwll-mawr without replacing anything

All of the old sealant is cut out, deal with any mould, and reseal with new mould-resistant silicone. We reseal baths, showers, sinks and worktops, including the awkward bits behind the taps. Whether it’s stained silicone and silicone coming away from the tiles, we can help, whatever the material.

The work is covered for a year after we finish. If anything isn’t right, ring us and we will come back.

Technician in a mask working on a freestanding roll-top bath
Where
Pwll-mawr (CF3, CF23)
Area hub
Cardiff
Guarantee
One year on every repair
Quote
Free and fixed, from your pictures
Call
0345 017 0787
Last updated
23 October 2026

Looking after it afterwards

Looking after the surface is easy, and it makes a real difference:

  • Reseal at the first sign of lifting
  • Dry the seal after bathing
  • Let steam out after showers
  • Use the extractor fan

Good ventilation is the best protection, and dry the joints after bathing so mould struggles to take hold.

Mouldy sealant is more than a cosmetic problem. Resealing early keeps water out of the walls and floor.

Pwll-mawr: your questions answered

Is the work guaranteed?

Yes: twelve months. If anything goes wrong with the repair within the year, we return to fix it.

Are you a vetted contractor?

Yes, including CHAS, Constructionline and SafeContractor. The full list is on our accreditations page.

How do I get a price for bath resealing in Pwll-mawr?

The exact price depends on the damage, so we quote from pictures. You know the full cost before anything is booked.

Can you quote from photos?

Nearly always. We only ask to see it in person if the photos can’t show what we need.

How long does silicone take to cure?

Normally after around 24 hours. We will tell you the exact time.

What happens once I’ve sent pictures?

You get a fixed price and available dates. If we need another angle, we will ask.

Do you work for landlords and businesses?

Yes. We carry out repairs for homeowners, landlords, letting agents, builders and businesses in Pwll-mawr.

Is a repair better than a new one?

Typically, if the item is otherwise sound. A repair avoids removal and making good. If replacing would be better, we’ll say so.

What affects the price in Pwll-mawr

We price every job individually, from your pictures. What matters most is:

  • The material
  • How many areas need work
  • How easy the damage is to reach
  • Whether we combine several jobs

The price depends on the type and amount of damage, the material and how many jobs we combine into one visit. We give a fixed quote from your pictures, so there are no surprises on the day.

How to get a fixed price

Two or three clear pictures are generally enough. Try to include:

  • The material, if you know it
  • Your postcode, so we can check dates
  • One sharp close-up of the damage
  • Details of any past repairs

No survey visit is needed: we price from photos. Use the quote form, or ring 0345 017 0787 to talk it through, and we’ll come back with a fixed figure.

Resealing in Pwll-mawr: why it matters

Sealing over old silicone is a false economy. It peels within weeks, and traps mould underneath. A proper reseal removes the old first. Rather than charging by the hour, we price the entire job up front. Damage, material and access decide it.

Why us?

  • We leave the room as we found it
  • One-year guarantee on every repair
  • A fixed quote before booking
  • No extra charge for your area

See our prices page.

Honest limits

We will always be straight with you, so here’s what a repair cannot fix:

  • Gaps too big for silicone alone
  • Hidden water damage
  • Loose tiles, which need refixing first

Send us pictures and we’ll tell you honestly before booking.

Materials we work on in Pwll-mawr

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

What your bath or shower is made of matters

Shower trays

Trays are sealed with weight on them, so the joint is at its widest.

Baths

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

What we do, step by step

Once we are through the door, we keep the work contained to the one room. We mask off everything nearby, the job takes around two hours, depending on what we find, and we finish with a tidy-up and a look at the finished work together.

  1. All the old sealant is cut out and removed.
  2. The joint is cleaned and any mould treated.
  3. We make sure the joint is completely dry.
  4. We fill a bath with water before sealing so the gap is at its widest.
  5. We run a new bead of mould-resistant silicone and smooth it neatly, taps included.

Preparing for the visit

  • Ensure the room can be ventilated
  • Make sure the area is dry
  • Keep a parking space free if you can

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 you will get a fixed quote back. There’s no charge for the quote and you’re under no obligation.

Send photos for a quote

Advice

About Pwll-mawr

Pwll-mawr is about 2 miles north-east of Roath, in Cardiff. From the centre of Pwll-mawr to the outlying streets, the service is the same: fixed prices, tidy work and a one-year guarantee. Pwll-mawr is one of 91 places in Cardiff where we work.

Every address in CF3 and CF23 is within our area. You’ll find streets such as New Road, Rhyl Road and Mardy Road. Close by, we cover Rumney (1 mile north-west), Trowbridge (1 mile north-east), Llanrumney (1 mile north), Llanedeyrn (1 mile north-west) and Pentwyn (2 miles north). Further out, we also cover Cardiff (3 miles west), Ely (6 miles west), Castle (3 miles south-west), Newtown (3 miles south-west), Caerau (6 miles west) and Riverside (3 miles south-west).

Around Pwll-mawr

Our customers here include homes close to Waterloo Gardens, Blessed Sacrament Catholic Church and Potters Wheel pub and the streets around them. Other local landmarks include Eastern High School (0.8 miles north-east) and Rumney Primary School (within half a mile west). For rail, the closest station is Cardiff Queen Street station, about 2.6 miles south-west. Further afield, we also cover the area around Capitol Centre (2.7 miles south-west) and Caer Castell (0.9 miles north). Open spaces near Pwll-mawr include The Mount and Roath Park Lake.

Map of Pwll-mawr © OpenStreetMap contributors

What we are called out for in Pwll-mawr

In time, even good sealant discolours. Steam, soap and movement all take their toll.

You may need us if you’ve spotted:

  • Old sealant that looks dirty
  • Black mould in the sealant
  • Sealant that is split or lifting
  • Water getting behind the bath or tray

Before you book anyone

  • Is the price fixed, and does it include VAT?
  • The length of the guarantee and what it covers
  • How to look after the finish
  • How the room is protected while they work

Our hiring checklist

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.