Merthyr Tydfil · Wales
Bath Resealing for Gelli-deg homes
Bath resealing across Gelli-deg and nearby, done in a single visit in most cases and guaranteed for a year.
- Gaps by the taps
- Discoloured, yellow sealant
- Sealant that is split or lifting

How the visit works
Nothing needs to be moved out of the room. We bring everything we need with us, put protection down and get going once we’ve agreed what we are doing. It generally takes about two hours for a bath, and you can get on with other things while we are there.
- All the old sealant is cut out and removed.
- The joint is cleaned and any mould treated.
- We dry the joint thoroughly.
- For a bath, we fill it with water first so the joint is at its widest.
- We run a new bead of mould-resistant silicone and smooth it neatly, including around the taps.
Preparing for the visit
- Let us know about parking or access
- Keep a parking space free if you can
- Keep children and pets away from the room on the day
Getting a price
Send us photos of the damage and one of the entire item, with your CF48 postcode, and we will come back with a fixed quote.
Read more
Bath resealing at your home in Gelli-deg
Preparation is everything in a reseal: old silicone removed, mould treated, the joint cleaned and dried. Then the fresh sealant goes on, in a neat, continuous bead. Common call-outs are for old sealant that looks dirty and missing sealant behind the taps, across baths, kitchen worktops & sinks and shower trays & enclosures.
You get a one-year guarantee, the same in Gelli-deg as everywhere else we work.

- Location
- Gelli-deg (CF48, CF47)
- County
- Merthyr Tydfil
- Cover
- A year, on every repair
- Quotes
- Free, fixed quote from pictures
- Call
- 0345 017 0787
- Last updated
- 23 October 2026
DIY repairs versus a professional job
A kit can be fine for a tiny mark out of sight. 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.
Common problems we fix in Gelli-deg
Most reseals are because of black mould. It grows into the silicone, so cleaning can’t get it all out.
People usually call us when they notice something like this:
- Black mould in the sealant
- Old sealant that looks dirty
- Silicone coming away from the tiles
- Missing sealant behind the taps
What your quote should include
- Whether there are any call-out or travel charges
- How the room is protected while they work
- How changes to the job are handled
- Who turns up on the day
Aftercare tips
It’s all simple stuff:
- Open a window after bathing
- Do not stand toiletries on the seal
- Clean the sealant gently and regularly
- Use the extractor fan
Avoid scraping the joints, and keep shampoo bottles off the joints.
Do not wait until water gets behind the bath. Gaps or lifting edges mean it needs doing.
Common questions in Gelli-deg
What happens next?
You’ll get a fixed quote back, usually with dates to choose from. There’s no obligation to book.
Do I need to be at home?
Yes. We need access to the room while we work, at a time we agree with you.
Will the price change on the day?
If we find something the photos didn’t show, we explain it first. The price only changes if you agree.
Do you cover Gelli-deg?
Yes, we do. Technicians travel to Gelli-deg from across the region, and the price is the same as everywhere else.
How long does resealing take?
A bath or shower usually takes a couple of hours. It then needs time to cure.
Why does mould come back so fast?
Damp is the cause. Ventilation and drying keep it clean longer.
How do I get a price for bath resealing in Gelli-deg?
Because every job differs, we price from photos. You know the full cost before anything is booked.
Can pets and children be at home?
Please keep children and pets out of the room during the visit. The rest of the house is unaffected.
What affects the price in Gelli-deg
You won’t pay by the hour. The price is based on:
- Whether it’s a chip, crack, burn or wear
- The colour and finish to match
- How easy the damage is to reach
- What the surface is made of
It helps to know what pushes a price up or down: access, material, the extent of the damage and whether we can do several items together. Send photos and you’ll get a fixed figure.
Send pictures for a quote
Photographing the damage takes a minute. Try to send:
- A coin beside the damage so we can judge size
- The postcode, so we can plan the visit
- Daylight if possible, and no flash reflection
- Any earlier repairs or coatings
Ring 0345 017 0787, or send us photos through the quote form. With one close-up and one wider picture, we can give you a fixed price.
Why reseal now?
Resealing is a small job. Leaving split or mouldy sealant lets water get behind the bath or tray, and that damage costs much more to fix. Compared with replacing, a repair is usually a fraction of the price, because there is no removal, plumbing or making good. The quote lists exactly what you are paying for.
Why Gelli-deg clients choose us
- CHAS, Constructionline and SafeContractor accredited
- No extra charge for your area
- Straight answers about what a repair can do
- Dust sheets down, tidy finish
Take a look at our pricing.
Nearby places to Gelli-deg
Also in Gelli-deg
What we can’t put right
A few problems are outside what a surface repair can do:
- A bath or tray that moves, until its support is fixed
- Loose tiles, which need refixing first
- Hidden water damage
Not sure? Send photos and we will give you a straight answer before booking.
Surfaces we repair
- Baths
- Shower trays & enclosures
- Basins & vanity units
- Kitchen worktops & sinks
- Wet rooms
What your bath or shower is made of matters
Shower trays
We put weight on a tray before sealing it, for the same reason.
Sinks and worktops
Basins, vanity units and kitchen worktops are resealed too, with the joint fully dried first.
About Gelli-deg
Gelli-deg is about 1 mile south-west of Park, in Merthyr Tydfil. Clients in Gelli-deg get the same service as everywhere else we cover: a fixed quote from photos, and a technician at your door on the day. Our technicians cover 52 places across Merthyr Tydfil, from the larger towns to small villages.
Our visits in CF48 and CF47 work the same way as everywhere else we cover. Jobs here include addresses on Cwmglo Road, Swansea Road and Lansbury Road and the roads around them. You’ll find Gelli-deg on the A470, which makes it straightforward to reach. Neighbouring places we cover include Heolgerrig (1 mile south), Clwydyfagwyr (1 mile west), Winchfawr (1 mile south-west), Cefn-coed-y-cymmer (1 mile north) and Abernant (2 miles south-west). We also work in nearby towns such as Treharris (7 miles south-east), Nelson (9 miles south-east), Pentwynberth-lwyd (8 miles south-east), Trelewis (8 miles south-east), Aberfan (5 miles south-east) and Troedyrhiw (4 miles south-east).
Near you in Gelli-deg
In Gelli-deg, that means homes near Ysgol Gynradd Coed y Dderwen, Gelli-Deg Independent Chapel and Vaynor and Penderyn High School and the streets around them. The closest station to Gelli-deg is Merthyr Tydfil station, roughly 1.2 miles south-east. A little further out are Cyfarthfa Castle Museum & Art Gallery (0.7 miles north-east) and Tydfil Public Assistance Institution (1.2 miles east). The countryside around Gelli-deg includes Mynydd Aberdar and Pwll Waun Cynon.
About our accreditations · Every repair comes with a one-year guarantee.

