Powys · Wales
Bath & shower resealing (mastic) in Defynnog, Powys
Bath, shower and sink resealing with new mould-resistant silicone at your home in Defynnog, with a one-year guarantee on every repair.
- Silicone smeared on tiles
- Unsealed corners
- Silicone coming away from the tiles
What your bath or shower is made of matters
Sinks and worktops
Basins, vanity units and kitchen worktops are resealed too, with the joint fully dried first.
Shower trays
Trays are sealed with weight on them, so the joint is at its widest.
How we handle bath resealing in Defynnog
We cut out all of the old sealant, treat any mould, and apply fresh mould-resistant silicone. We do this for baths, showers, sinks and worktops, and that includes the awkward spots behind the taps. We’re frequently asked to fix black spots in the silicone and discoloured, yellow sealant, in basins & vanity units, baths and shower trays & enclosures.
We guarantee the work for a year. If there is a problem with the repair within the year, we return and sort it.
- Area
- Defynnog (LD3)
- County
- Powys
- Cover
- 12 months on all our work
- Quote
- Fixed and free, based on pictures
- Telephone
- 0345 017 0787
- Last updated
- 23 October 2026
Why reseal now?
Resealing costs very little. Failed sealant can lead to water damage that is much more expensive. 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 pictures and you will get a fixed figure.
Why choose Surface Doctor in Defynnog
- One price list for the entire UK
- Nothing taken out or refitted
- CHAS, Constructionline and SafeContractor accredited
- Repair technicians who travel to you, UK-wide
See our full price list.
About Defynnog
Defynnog is about 15 miles north-west of Merthyr Tydfil, in Powys. Customers in Defynnog get the same service as everywhere else we cover: a fixed quote from your pictures, and a technician at your door on the day. Our repair technicians cover 234 places across Powys. Our nearest city page is Birmingham, about 80 miles away.
Our technicians cover all of LD3. Other places close to Defynnog include Sennybridge (1 mile north-west), Trecastle (3 miles west), Llywel (4 miles west), Tai'r Bull (4 miles east) and Yscir (5 miles east). We also work in nearby towns such as Brecon (7 miles east), Ystradgynlais (13 miles south-west), Llanfaes (7 miles east), Y Gurnos (15 miles south-west), Talgarth (15 miles east) and Pendre (7 miles east).
Landmarks near Defynnog
In Defynnog, that means homes near The Tanners Arms and St Cynog's Church. A little further out are Castell Du (0.6 miles north-west) and Senni (2.8 miles south). Open spaces near Defynnog include Llyn Traeth-Bach and Y Gaer.
Towns and villages near Defynnog
More services for Defynnog
Aftercare tips
Much of the damage we repair could have been avoided. A few tips:
- Store bottles on a shelf
- Clean the sealant gently and regularly
- Open a window after bathing
- Dry the seal after bathing
Do not scrape the sealant with anything sharp, and keep shampoo bottles off the joints.
Black mould in sealant is not just unsightly; it shows moisture is getting in. Resealing early keeps water out of the walls and floor.
What happens on the day
There’s not much you need to do on the day. Show us the job, point us to the room, and we’ll get on with it. The job generally runs to about two hours for a bath, tidy-up included.
- The old silicone is cut out completely.
- We remove the residue and clean the joint.
- Any mould is treated and the joint dried.
- We fill the bath, or weight the tray, to open the joint.
- New mould-resistant silicone is applied and tooled neatly.
Before we arrive
- Avoid using the area for a few hours before we arrive
- Let us know if it has been repaired before
- Have somewhere for us to park nearby if possible
Get a quote
Getting a price is easy: snap the damage close up and then the entire item, send them over with your postcode, and we’ll reply with a fixed price. There’s no charge for the quote and you are under no obligation.
Read more
FAQs for Defynnog
Do you do work for letting agents?
Yes, often. We can quote for several properties together and work between tenancies.
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 work in Defynnog?
We do. We send a technician to Defynnog for every job, with no extra charge for travel.
I’m a tenant. Can you help?
Of course. Check with your landlord; we can send the quote to them too.
Does someone need to be in?
Yes. The technician needs access to the room for the visit, at a time that suits you.
Do you seal over the old sealant?
No, we never seal over old silicone. The old sealant is cut out and the joint cleaned and dried.
How much does bath resealing cost in Defynnog?
Every job gets a fixed price based on photos of the damage. Send a close-up and a photo of the whole item and your postcode.
Is there a guarantee?
All our work carries our one-year guarantee. Ask us what it covers when you get your quote.
Work for landlords and builders
We regularly work with letting and managing agents. Just send pictures, the address and how to get access.
We work for landlords, letting agents and housing providers in Defynnog as well as householders. Repairing between tenancies keeps void periods short, and it typically costs far less than a refit.
When a repair is not the answer
We won’t take on work that will not last, so these are the limits:
- Hollow or loose tiles
- Water damage behind the bath that needs a builder
- A flexing bath
If in doubt, send photos and we’ll say what we think.
Surfaces we repair
- Basins & vanity units
- Kitchen worktops & sinks
- Shower trays & enclosures
- Baths
- Wet rooms
What affects the price in Defynnog
Every quote is fixed and free. What we look at:
- How many items we do on one visit
- How easy the damage is to reach
- Previous DIY repairs that have to come out
- How many areas need work
A repair is priced on what needs doing, not your postcode. The full price is agreed before booking, with no extras added later.
Send photos for a quote
Good pictures mean an accurate price. Here’s what helps:
- Your postcode, so we can check dates
- The material, if you know it
- A clear, close picture of the problem area
- Any earlier repairs or coatings
For a price in Defynnog, the easiest route is pictures: one close up, one from further back, plus your postcode. You will get a fixed quote with dates to choose from.
DIY kit or professional repair?
It’s tempting to reach for a kit, but the repairs we redo most often are DIY ones that have discoloured or lifted. Doing it properly first is typically the cheaper route.
The difference between a kit and a professional repair is mostly in the preparation and colour. We clean and key the area properly, mix the colour to your surface and finish it to the same sheen, then guarantee it for a year.
About our accreditations · Every repair comes with a one-year guarantee.
