Cardiff · Wales
Bath & shower resealing (mastic) in Llanishen, Cardiff
Local bath resealing for Llanishen: photo quotes, tidy work and a year’s guarantee.
- A messy previous reseal
- Water getting behind the bath or tray
- Mould you cannot clean out
About our bath resealing in Llanishen
All of the old sealant is cut out, 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 work on basins & vanity units, kitchen worktops & sinks and wet rooms, and the jobs we see most are a messy previous reseal and silicone coming away from the tiles.
The work is covered for a year after we finish. Just call us if there is a problem and we’ll sort it.
- Where
- Llanishen (CF14, CF23)
- Region
- Cardiff
- Cover
- 12 months on all our work
- Price
- Fixed and free, based on pictures
- Telephone
- 0345 017 0787
- Updated
- 23 October 2026
Honest limits
Before booking, it’s worth knowing the limits:
- Hidden water damage
- Gaps too big for silicone alone
- A bath or tray that moves, until its support is fixed
If in doubt, send photos and we’ll say what we think.
Surfaces we repair
- Wet rooms
- Baths
- Kitchen worktops & sinks
- Basins & vanity units
- Shower trays & enclosures
How to look after the repair
Most damage we see is avoidable. A few tips:
- Give the seal a regular clean
- Air the room after use
- Replace the seal when mould sets in
- Keep the joints dry
Avoid scraping the joints, and don’t stand bottles on the seal.
Mouldy sealant is more than a cosmetic problem, it’s a sign moisture is sitting in the joint. An early reseal keeps water where it belongs.
What we do, step by step
Arrival times are agreed in advance, so you are not left guessing. Once we are there, the work takes around two hours for most jobs. The room is left tidy and ready to use once it has cured.
- The old silicone is cut out completely.
- Residue is removed and the joint cleaned.
- We treat mould and dry the joint thoroughly.
- We fill the bath, or weight the tray, to open the joint.
- We apply fresh mould-resistant silicone and tool a neat bead.
Before we arrive
- Avoid using the area for a few hours before we arrive
- Mention any parking restrictions or tricky access
- Open a window if you can
Ask for a price
Ring 0345 017 0787, or send us photos through the quote form. With a clear picture of the damage and one of the entire bath or shower, we can price the job without visiting.
Related advice
Work for landlords and builders
Housing associations and facilities teams use us for planned and reactive repairs. A repair avoids taking out and refitting, which is easier on the people living there.
Rented homes see more wear and tear, and replacing things at every changeover adds up. A repair between tenancies is a cheaper way to keep the property in good order.
Common problems we fix in Llanishen
Black mould is the most common reason people reseal. It grows into the silicone, so cleaning only removes the surface.
Send us a picture if you notice any of these:
- Stained silicone
- Mould you cannot clean out
- An untidy old seal
- Missing sealant behind the taps
What to look for in a quote
- Who turns up on the day
- Is the price fixed, and does it include VAT?
- What preparation is included
- How your room will be protected
Towns and villages near Llanishen
Also in Llanishen
Different materials, different repairs
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.
Llanishen questions
Do the materials smell?
Some materials have a smell while they’re applied, so we ventilate the room. It clears as the materials cure.
Can you repair something that is been repaired before?
Most of the time. Tell us what was done before and we’ll plan for it.
My seal keeps tearing. Why?
Usually because the bath or tray moves. We seal baths full of water.
Do you seal over the old sealant?
Never over old. The old sealant is cut out and the joint cleaned and dried.
Why does my sealant keep going mouldy?
Mostly moisture and poor ventilation. We use mould-resistant silicone, and ventilation helps it last.
Are there extra charges for Llanishen?
We do not add a call-out fee. The fixed quote covers the visit and the work.
Do I need to be at home?
Someone needs to let us in and show us the job. You don’t need to watch us work.
Do you work in Llanishen?
Yes. We work across the UK and come to Llanishen. Send photos and we’ll quote, or call 0345 017 0787.
Covering Llanishen
Llanishen is about 2 miles north of Cardiff, in Cardiff. We agree a date that works for you, and you’ll know when to expect us, so there is no waiting around. Llanishen is one of 91 towns and villages in Cardiff we cover.
Here we cover the CF14 and CF23 postcode area. Local streets include Usk Road, Tatham Road and Llanon Road. Other places close to Llanishen include Roath Park (1 mile south-east), Cyncoed (1 mile south-east), Heath (1 mile south), Lisvane (2 miles north-east) and Llanedeyrn (2 miles south-east). Larger places within reach include Ely (4 miles south-west), Castle (3 miles south), Adamsdown (3 miles south-east), Roath (3 miles south-east), Splott (3 miles south-east) and Newtown (4 miles south).
What’s near Llanishen
We visit homes around The Church Inn, Coed Glas Primary School and Roath Park, among other places. Other local landmarks include Llanishen High School (less than half a mile north-east) and St Isan's Church (less than half a mile north). Llanishen has its own railway station: Llanishen station. Further afield, we also cover the area around University Dental Hospital on Cardiff University (1.5 miles south) and Capitol Centre (3.3 miles south). Green spaces nearby include Wenallt Hill and Glamorgan Canal / Long Wood.
- Local facilities include St Martins (2.7 miles north-west)
Can I fix it myself?
DIY kits are sold for most surfaces, and they can make a small mark look better. The trouble is colour and preparation: they come in a handful of shades, and if the surface is not prepared the repair won’t last.
A DIY attempt is not a disaster. We take the old repair out and do it properly, so it does not stop a professional repair. Just mention it when you send photos, as it can add time.
Why reseal now?
Resealing is a small job. Putting off a reseal lets water get behind the bath or tray, which costs far more to put right. Most people are surprised how affordable a repair is, especially compared with replacing and refitting. Photos let us give you the exact figure.
What you get with us
- Straight answers about what a repair can do
- CHAS, Constructionline and SafeContractor accredited
- Typically one visit, start to finish
- One price list for the whole UK
Read our prices page.
About our accreditations · Every repair comes with a one-year guarantee.
