Cardiff · Wales
Bath & shower resealing (mastic) in Radyr, Cardiff
Bath, shower and sink resealing with new mould-resistant silicone for homeowners, landlords and businesses in Radyr. Send pictures for a free, fixed quote.
- Black mould in the sealant
- Silicone coming away from the tiles
- A messy previous reseal

About our bath resealing in Radyr
A good reseal is all about preparation: old silicone removed, mould treated, the joint cleaned and dried. Then the fresh sealant goes on, as one neat, continuous bead. If you’re dealing with damp near the bath and an untidy old seal, we can help, on baths, basins & vanity units and shower trays & enclosures alike.
We guarantee the work for a year. If there’s a problem with the repair within the year, we return and sort it.
- Where
- Radyr (CF15, CF5)
- County
- Cardiff
- Guarantee
- A year, on every repair
- Quotes
- Free and fixed, from your pictures
- Telephone
- 0345 017 0787
- Page updated
- 23 October 2026

Should I try a DIY kit first?
Kits are cheap and easy to find, but the repairs we redo most often are DIY ones that have discoloured or lifted. Getting it right first time is usually cheaper.
If you’ve already tried a DIY fix, that’s fine. We remove the old filler and start again, so it won’t stop us repairing it. It does add a little time, so tell us about it when you send photos.
Other services in Radyr
About Radyr
Radyr is about 2 miles north of Ely, in Cardiff. Wherever you are in the CF15 postcode area, we carry out the work at your property. Our repair technicians cover 91 places across Cardiff.
All of CF15 and CF5 is within our area, from the main roads to the quietest streets. Jobs here include addresses on Drysgol Road, Windsor Road and St John Avenue and the roads around them. Other places close to Radyr include Radyr and Morganstown (1 mile north), Rhydlafr (1 mile west), Danescourt (1 mile south-east), Morganstown (1 mile north) and Coryton (1 mile north-east). Larger places within reach include Cardiff (3 miles east), Castle (4 miles south-east), Adamsdown (5 miles east), Roath (4 miles east), Splott (5 miles east) and Newtown (5 miles south-east).
What’s near Radyr
Typical jobs here are in homes near Radyr Comprehensive School, Radyr Tap and Hailey Park, among other places. Nearby too are Ysgol Gynradd Groes-wen Primary School (0.5 miles south-east) and Church of Christ Church (0.5 miles north-east). The nearest railway station is Radyr station, about 0.7 miles north-east of the centre. Well-known places in the area include Morganstown Castle Mound (1.3 miles north) and Creigiau & St Fagans (0.9 miles west). For a walk, there is Roath Park Lake and Garth Wood.
What happens on the day
A typical visit goes like this: we arrive on time, protect everything around the work area, carry out the work and clear up. Plan for about two hours for a bath from start to finish. Before we go, we will explain when it can be used and how to look after it.
- We cut out and remove all of the old sealant.
- The joint is cleaned and any mould treated.
- The joint is dried thoroughly.
- 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, including around the taps.
Before we arrive
- Let us know about parking or access
- Make sure the area is dry
- Mention if the room is upstairs or in a flat
Ask for a price
Getting a quote takes a couple of minutes: photograph the damage, then the entire bath or shower, add your postcode and send them over. You will get a fixed price, not an estimate.
Read more
Repairs by material
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, for the same reason.
Landlord and trade work in Radyr
We regularly price jobs from inventory or check-out photos. That means we can quote before you even visit the property, and we can arrange access with the tenant directly if that helps.
Builders, developers and site managers book us for snagging repairs, fixing chips and scratches before handover so nothing needs replacing. We hold CHAS, Constructionline and SafeContractor accreditations.
Common questions in Radyr
Is it worth repairing rather than replacing?
Generally, yes. A repair skips the removal, fitting and redecorating. If it isn’t worth repairing, we will tell you.
It’s been repaired before. Can you still fix it?
Generally, yes. We remove the old repair before doing a new one.
How do I stop mould in sealant?
Mostly moisture and poor ventilation. We use mould-resistant silicone, and ventilation helps it last.
Do you cover the whole of Cardiff?
Everywhere in the UK, Radyr included. There is no extra charge for travel.
What if the damage is worse than the pictures show?
If we find something the photos didn’t show, we explain it first. The price only changes if you agree.
How long will it take?
Around two hours for a bath, plus curing time.
Can landlords book you?
We do, regularly. We quote for multiple addresses and fit around tenancy changeovers.
Can you reseal over the old silicone?
All the old sealant comes out. Fresh silicone doesn’t stick to old.
What we are called out for in Radyr
In time, even good sealant discolours. Steam, soap and movement all wear it down.
Typical reasons for a call-out include:
- Missing sealant behind the taps
- An untidy old seal
- Black mould in the sealant
- Damp near the bath
Questions to ask before booking
- Who turns up on the day
- The length of the guarantee and what it covers
- How your room will be protected
- What aftercare is recommended
Looking after it afterwards
A little care keeps the finish looking good. We recommend:
- Keep bottles off the joints
- Clean the sealant gently and regularly
- Wipe the joints dry after use
- Reseal when black spots will not clean off
Good ventilation is the best protection, and dry the joints after bathing so mould struggles to take hold.
Damp below or loose tiles need checking quickly. It may be more than a reseal, so we’ll tell you if it needs a builder or plumber.
Why it’s worth resealing in Radyr
Compared with repairing water damage, resealing is cheap. It’s a quick job that protects your walls and floors. Rather than charging by the hour, we fix the price before we start. It depends on the damage, the material and access.
Why us?
- Everything repaired in place
- Work done at your home or business
- Honest advice, even when it means no job
- Free fixed quotes from pictures
See our pricing.
What we cannot put right
A repair isn’t right for every job, for example:
- Gaps so wide they need filling or trims before sealing
- A flexing bath
- Tiles that move, until they’re refixed
If in doubt, send photos and we’ll say what we think.
Materials we repair
- Basins & vanity units
- Kitchen worktops & sinks
- Shower trays & enclosures
- Baths
- Wet rooms
About our accreditations · Every repair comes with a one-year guarantee.

