Caerphilly · Wales
Bath & shower resealing (mastic) in Gwrhay, Caerphilly
Fixed-price bath resealing in Gwrhay and the surrounding area, generally in one visit and guaranteed for a year.
- Black mould in the sealant
- Discoloured, yellow sealant
- Leaks at the edges
How we handle bath resealing in Gwrhay
We reseal baths with them filled with water, so the joint opens fully, so the seal does not tear when the bath is first used. If you are dealing with missing sealant behind the taps and old sealant that looks dirty, we can generally put it right, whatever the material.
All our work is covered by a one-year guarantee, wherever you are in Caerphilly.
- Area
- Gwrhay (NP12)
- Region
- Caerphilly
- Cover
- One year on every repair
- Quotes
- Free and fixed, from your photos
- Telephone
- 0345 017 0787
- Last updated
- 23 October 2026
Why reseal now?
Putting new silicone over old does not last. It peels within weeks, and mould stays trapped behind it. A proper reseal removes the old first. Most people are surprised how affordable a repair is, especially compared with replacing and refitting. Photos let us give you the exact figure.
Why choose Surface Doctor in Gwrhay
- Work done at your home or business
- Accredited with CHAS, Constructionline and SafeContractor
- Honest advice, even when it means no job
- Rooms protected and left tidy
See our pricing.
Gwrhay: your questions answered
Can you repair something that is been repaired before?
Normally, yes. The old repair comes out first.
Do you cover the entire of Caerphilly?
All of Caerphilly, and the rest of the UK. Travel is included in the price.
Is it OK to have pets in the house?
Keep pets and children away from the work area on the day, mainly so nothing gets touched before it has cured.
Do the materials smell?
A little, depending on the job. Ventilation keeps it to a minimum, and it soon fades.
Do you charge for travel?
Travel is included in the price, with the same prices everywhere we work.
What happens if you find more damage?
The price is fixed for what the pictures show. Anything extra is discussed before we begin.
What information do you need?
Send pictures through the quote form or call 0345 017 0787.
Does someone need to be in?
Yes. The technician needs access to the room for the visit, at a time that suits you.
Nearby places to Gwrhay
Also in Gwrhay
Honest limits
It helps to know what we can’t do:
- Hollow or loose tiles
- Rotten walls or floors behind the bath
- A flexing bath
If in doubt, send pictures and we will say what we think before booking.
Materials we work on in Gwrhay
- Baths
- Basins & vanity units
- Wet rooms
- Shower trays & enclosures
- Kitchen worktops & sinks
How to look after the repair
Once the work has cured, treat it gently:
- Use the extractor fan
- Reseal at the first sign of lifting
- Give the seal a regular clean
- Air the room after use
Use the extractor fan, wipe the joints dry after use, and clean them regularly with a mild cleaner to slow mould growth.
Mouldy sealant is more than a cosmetic problem. An early reseal keeps water where it belongs.
For landlords and businesses
Hotels, guest houses and holiday lets can’t afford rooms out of action for long, so we keep visits short and tidy. We can work around your bookings.
Letting agents often send us photos straight from the inventory. That means we can quote before you even visit the property, and we liaise with tenants about access if you’d like us to.
What bath resealing costs
There are no hourly rates or hidden extras. The price is based on:
- Where the damage is and how we get to it
- Any earlier repairs that need removing first
- How much damage there is
- What kind of damage it is
Compared with replacing, repairing usually costs far less, because nothing has to be taken out, refitted or made good. Your fixed quote shows exactly what’s included.
Send pictures for a quote
Most quotes are done from pictures alone. To help us price it:
- A photo taken from further back
- Any details about the material
- A clear, close picture of the problem area
- Details of any past repairs
Getting a quote takes a couple of minutes: take one close-up and one wider shot of the bath or shower, add your postcode and send them over. What comes back is a fixed quote, not a guess.
The process
On the day, the technician arrives at the agreed time, protects the room with dust sheets and masking and gets started. Expect it to take about two hours for a bath. We clean up when we are done and tell you when it’s ready to use.
- First we strip out every bit of the old mastic.
- The joint is cleaned and any mould treated.
- We make sure the joint is completely dry.
- For a bath, we fill it with water first so the joint is at its widest.
- New mould-resistant silicone goes on and is tooled to a neat finish, taps included.
Getting ready for the visit
- Avoid using the area for a few hours before we arrive
- Open a window if you can
- Let us know about parking or access
Getting a price
No survey visit is needed: we price from pictures. Use the quote form, or ring 0345 017 0787 to talk it through.
Related advice
Gwrhay and nearby
Gwrhay is about 2 miles north-east of Cefn Fforest, in Caerphilly. Our work suits any type of property, from flats and terraces to detached houses and new builds, plus businesses and rented homes. We work in all 94 towns and villages across Caerphilly. Our jobs stretch from Gwrhay to Birmingham (about 77 miles away).
Our technicians cover all of NP12 and the streets around it. Other places close to Gwrhay include Cwm-corrwg (1 mile north-west), The Rock (1 mile south-west), Argoed (1 mile north-west), Oakdale (1 mile south-east) and Croespenmaen (1 mile south-east). Larger places within reach include Caerphilly (8 miles south), Risca (6 miles south-east), Ystrad Mynach (4 miles south-west), Beddau (8 miles south), Trecenydd (8 miles south) and Risca East (7 miles south-east).
Near you in Gwrhay
In Gwrhay, that means homes near Oakdale Comprehensive School, Ysgol Gymraeg Cwm Derwen and Sirhowy Arms Hotel. The nearest railway station is Gilfach Fargoed station, roughly 2 miles west of the centre. Further afield, we also cover the area around Castell Taliorum (2.6 miles north-east) and Oakdale Hospital (0.5 miles south). For a walk, there is Parc Coetir Bargoed.
What your bath or shower is made of matters
Baths
We fill the bath before sealing, to open the joint fully.
Sinks and worktops
We reseal basins, vanity tops and kitchen worktops, with the joint fully dried first.
Should I try a DIY kit first?
DIY kits are sold for most surfaces, and they can make a small mark look better. Where they fall down is colour and preparation: they come in a handful of shades, and if the surface isn’t prepared the repair will not last.
It’s tempting to reach for a kit, but many of the jobs we do start with putting right a DIY repair. Getting it right first time is normally cheaper.
About our accreditations · Every repair comes with a one-year guarantee.
