Caerphilly · Wales

Bath Resealing for Pentwyn-mawr homes

Bath resealing in Pentwyn-mawr without the cost of replacing. Get a fixed price from your pictures, then we come to you.

  • Sealant that’s split or lifting
  • Black spots in the silicone
  • Missing sealant behind the taps
Surface Doctor technician refinishing the outside of a roll-top bath

Book bath resealing in Pentwyn-mawr

Repairs by material

Shower trays

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

Sinks and worktops

Basins, vanity units and kitchen worktops are resealed too, once the joint is completely dry.

Bath resealing at your home in Pentwyn-mawr

A fresh seal protects your bathroom. Failed sealant lets water get where it shouldn’t, and a new seal stops it. If you are dealing with discoloured, yellow sealant and silicone smeared on tiles, we can help, whatever the material.

We guarantee the work for a year. If there’s a problem with the repair within the year, we return and sort it.

Surface Doctor technician refinishing the outside of a roll-top bath
Location
Pentwyn-mawr (NP11, NP12)
County
Caerphilly
Cover
One year on every repair
Price
Fixed and free, based on photos
Phone
0345 017 0787
Last updated
23 October 2026

Landlords, agents and businesses in Pentwyn-mawr

Builders use us to fix snagging damage before handover. We can visit several plots in one trip.

We regularly work with letting and managing agents. Send the address, photos and access details and we will handle the rest.

Pentwyn-mawr and the surrounding area

Pentwyn-mawr is about 1 mile south-west of Trecceln, in Caerphilly. Our work suits any type of property, old or new, large or small, as well as offices, shops and holiday lets. Pentwyn-mawr is one of 94 places in Caerphilly where we work. You can also see our page for Birmingham, about 78 miles away.

All of NP11 and NP12 is within our area. Whether you live on Fox Avenue, Pennar Lane and High Street or anywhere nearby, we can come to you. Pentwyn-mawr sits on or near the A4048, which makes travel easy. If you’re just outside Pentwyn-mawr, we cover Tonypistyll (1 mile east), Penmaen (1 mile north-west), Woodfieldside (1 mile north-west), Trecceln (1 mile north-east) and Persondy (1 mile south-east). We also work in nearby towns such as Caerphilly (6 miles south-west), Risca (4 miles south-east), Ystrad Mynach (3 miles west), Beddau (7 miles south-west), Trecenydd (7 miles south-west) and Risca East (5 miles south-east).

Near you in Pentwyn-mawr

Our clients here include homes close to Newbridge School, Pentwynmawr Primary School and Oakdale Comprehensive School, among other places. Other local landmarks include The Three Horseshoes Inn (less than half a mile east) and Church of St Paul (0.8 miles north-east). Pentwyn-mawr’s nearest station is Newbridge station, about 1 mile north-east of the centre. Nearby you’ll also find Twyn Castell (3.7 miles west) and Oakdale Hospital (1.6 miles north-west). The countryside around Pentwyn-mawr includes Cwm Lickey Lake and Cefn Rhyswg.

Map of Pentwyn-mawr © OpenStreetMap contributors

Should I try a DIY kit first?

For a hairline mark somewhere you’ll never see, a kit may be enough. For anything you look at every day, anything that has rusted, cracked or holed, or anything on a coloured surface, it’s worth having it done properly.

Kits are cheap and easy to find, but many of the jobs we do start with putting right a DIY repair. Doing it properly first is typically the cheaper route.

Questions from Pentwyn-mawr

What happens next?

You will get a fixed quote back. There’s no obligation to book.

Why does my sealant keep splitting?

The bath or tray is probably flexing. Persistent splitting can mean the support needs attention.

How do I stop mould in sealant?

Damp is the cause. Ventilation and drying keep it clean longer.

Is repairing better than replacing?

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

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

Generally, yes. Let us know what was used before.

How long before I can shower?

You will get the curing time from us, normally around a day.

Do you cover the entire of Caerphilly?

The entire UK, including all of Caerphilly. Just include your postcode and we’ll offer you dates.

Are there extra charges for Pentwyn-mawr?

No. Our quotes include travel, with the same prices everywhere we work.

Is resealing worth it?

Sealing over old silicone is a false economy. It soon peels, and mould stays trapped behind it. A proper reseal removes the old first. A repair normally costs much less than people expect, especially compared with replacing and refitting. Send photos and we will give you the exact figure.

Why Pentwyn-mawr clients choose us

  • Work done at your home or business
  • One visit for most repairs
  • We will tell you if it’s not worth repairing
  • No need to remove anything

Read our full price list.

What happens on the day

There is not much you need to do on the day. Show us the job, point us to the room, and we will get on with it. The job generally runs to around two hours, including clearing up.

  1. The old silicone is cut out completely.
  2. Residue is removed and the joint cleaned.
  3. We treat mould and dry the joint thoroughly.
  4. The bath is filled with water, or weight put on the tray.
  5. We apply fresh mould-resistant silicone and tool a neat bead.

Getting ready for the visit

  • Tell us about parking, stairs or access
  • Open a window if you can
  • Point us to the nearest place to park

Getting a price

Pricing is simple: snap the damage close up and then the whole item, send them to us with your postcode, and we’ll reply with a fixed price. There is no charge for the quote and you are under no obligation.

Send photos for a quote

Related advice

Prices and what affects them

Quotes are free and the price is fixed. What we look at:

  • Whether old repairs or coatings need taking off
  • What the surface is made of
  • How many items we do on one visit
  • The colour and finish to match

Set against the cost of replacement, a repair is usually a fraction of the price, because nothing has to be taken out, refitted or made good. The quote lists exactly what you are paying for.

Send pictures for a quote

Phone pictures are fine. Make sure they show:

  • A picture taken from further back
  • Any details about the material
  • Details of any past repairs
  • The postcode, so we can plan the visit

For most jobs, photos are all we need to give you a price. Add a line about what happened and your postcode, and we’ll send back a fixed quote and some dates.

What we’re called out for in Pentwyn-mawr

A bathroom without good ventilation is hard on sealant: moisture sits on the joints longer, and mould takes hold.

The most common problems we are called about are:

  • Silicone coming away from the tiles
  • Water getting behind the bath or tray
  • Discoloured, yellow sealant
  • Black spots in the silicone

Comparing quotes

  • How the colour is matched
  • Whether a trained technician does the job
  • What aftercare is recommended
  • How soon you can use it again

Our hiring checklist

Aftercare tips

So the finish stays in good condition:

  • Reseal when black spots won’t clean off
  • Wipe the joints dry after use
  • Use the extractor fan
  • Don’t stand toiletries on the seal

Avoid scraping the joints, and do not stand bottles on the seal.

If you notice damp, stains on the ceiling below or loose tiles, act quickly. It may be more than a reseal, so we will tell you if it needs a builder or plumber.

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