Powys · Wales
Bath & shower resealing (mastic) in Cwmdu, Powys
Our technicians come to Cwmdu for bath, shower and sink resealing with new mould-resistant silicone. Nothing is taken out, with a one-year guarantee.
- Silicone smeared on tiles
- Damp near the bath
- Gaps in the seal

Bath resealing in Cwmdu, done in place
A fresh seal protects your bathroom. Old, split or mouldy sealant lets water get behind the bath or tray, and resealing puts a stop to that. Our technicians work on wet rooms, shower trays & enclosures and baths, and the jobs we see most are gaps by the taps and water getting behind the bath or tray.
Your repair is guaranteed for a year, as with every job we do.
- Where
- Cwmdu (NP8)
- County
- Powys
- Warranty
- One year on every repair
- Quote
- Free and fixed, from your pictures
- Phone
- 0345 017 0787
- Page updated
- 23 October 2026

When a repair isn’t the answer
Before booking, it’s worth knowing the limits too:
- A flexing bath
- Loose tiles, which need refixing first
- Rotten walls or floors behind the bath
If in doubt, send pictures and we will say what we think before booking.
Surfaces we repair
- Shower trays & enclosures
- Wet rooms
- Kitchen worktops & sinks
- Baths
- Basins & vanity units
What your bath or shower is made of matters
Shower trays
We put weight on a tray before sealing it, so the joint is at its widest.
Baths
Baths are resealed with water in them, to open the joint fully.
Do you need bath resealing in Cwmdu?
Even good sealant eventually discolours. Steam, soap and movement all take their toll.
If you can see any of these, send us a photo:
- Stained silicone
- Gaps in the seal
- Leaks at the edges
- Silicone smeared on tiles
What your quote should include
- If travel is included in the price
- The length of the guarantee and what it covers
- Whether the colour is mixed to match
- Aftercare advice
Cwmdu: your questions answered
What happens once I’ve sent pictures?
You get a fixed quote and available dates. If anything’s unclear, we’ll ask for another photo.
How long does a reseal take?
Generally a couple of hours, plus curing time.
Do the materials smell?
There can be some smell while we work, so we ventilate the room. It clears as the materials cure.
Will it make a mess?
We protect the room with dust sheets and masking first, and tidy up before we leave.
Can you do more than one item on the same visit?
Yes. Doing several items on one visit typically costs less than separate visits. Include pictures of each item.
Can I get a quote without a visit?
Generally, yes. A close-up and a wider photo are enough to give a fixed quote.
Is there a call-out fee?
We do not add a call-out fee. The fixed price covers the visit and the work.
Do I have to be there?
We need someone to let us in. You don’t need to watch us work.
How to look after the repair
Good habits make a big difference to how long a repair lasts:
- Keep the joints dry
- Let steam out after showers
- Store bottles on a shelf
- Clean the joints with a mild cleaner
Good ventilation is the best protection, and dry the joints after bathing.
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.
Can I fix it myself?
If you’ve already tried a DIY fix, that is fine. We take the old repair out and do it properly, so it will not stop us repairing it. Just mention it when you send photos, as it can add time.
Kits are cheap and easy to find, but the repairs we redo most frequently are DIY ones that have discoloured or lifted. Doing it properly first is typically the cheaper route.
Places near Cwmdu
More services for Cwmdu
Our work in Cwmdu
Cwmdu is about 8 miles north of Ebbw Vale, in Powys. We travel to homes and businesses in Cwmdu and the surrounding area, so nothing has to leave your home. Cwmdu is one of 234 places in Powys where we work. We work right across the region, from Cwmdu to Birmingham (68 miles away).
All of NP8 is covered, from the main roads to the quietest streets. Close by, we cover Tretŵr (2 miles south), Bwlch (2 miles south-west), Cyffredyn (3 miles south), Coed-yr-ynys (3 miles south-west) and Llangynidr (3 miles south-west). We also work in nearby towns such as Brecon (9 miles west), Llanfaes (9 miles west), Crughywel (4 miles south-east), Talgarth (7 miles north) and Pendre (9 miles west).
Near you in Cwmdu
Our customers here include homes close to Farmers Arms and Church Villa and the streets around them. Further afield, we also cover the area around Tretower Castle (1.5 miles south). Not far away are Myarth and Llangorse Lake.
Is resealing worth it?
Resealing is a small job. Leaving split or mouldy sealant lets water get behind the bath or tray, which costs far more to put right. We do not add extras on the day. The price we quote from your photos is the price you pay, unless the damage turns out to be different, in which case we talk to you first.
Why choose Surface Doctor in Cwmdu
- Most jobs done in one visit
- A year’s guarantee on all work
- We will tell you if it’s not worth repairing
- One price list for the whole UK
See our full price list.
Landlords, agents and businesses in Cwmdu
Rental properties take more wear, and replacing items every time a tenant leaves is expensive. Repairing between tenants keeps the property presentable for less.
For anyone letting property in or around Cwmdu, we can repair and quote for several addresses together. Send pictures for each one and we’ll come back with a combined price.
How it works
Nothing needs to be moved out of the room beforehand. Everything we use comes in the van with us, lay protective sheets and start once you are happy with the plan. It typically takes about two hours for a bath, and you can get on with other things while we’re there.
- The surrounding area is protected and the joints masked.
- Old sealant and residue are removed.
- We clean, treat and dry the joint.
- Fresh silicone is applied in a continuous bead.
- The bead is smoothed, the tape removed and the seal left to cure.
Getting ready for the visit
- Let the surface dry out before the visit
- Clear the area around the damage
- Keep a parking space free if you can
Get a quote
A quote takes minutes to ask for: take one close-up and one wider shot of the bath or shower, include your postcode and send them over. What comes back is a fixed quote, not a guess.
Related advice
About our accreditations · Every repair comes with a one-year guarantee.

