Gwynedd · Wales
Bath & shower resealing (mastic) in Llanwnda, Gwynedd
Bath resealing in and around Llanwnda: photo quotes, tidy work and a year’s guarantee.
- Water getting behind the bath or tray
- Missing sealant behind the taps
- Silicone smeared on tiles

About our bath resealing in Llanwnda
The key to a good reseal is getting all of the old silicone out. Fresh sealant does not stick to old, which is why so many DIY reseals peel. Whether it’s silicone smeared on tiles and old sealant that looks dirty, we can generally put it right.
All of our repairs are guaranteed for twelve months. We return to put right any problem with the work.

- Where
- Llanwnda (LL54)
- Region
- Gwynedd
- Cover
- 12 months on all our work
- Quotes
- Free, fixed price from pictures
- Call
- 0345 017 0787
- Page updated
- 23 October 2026
Common questions in Llanwnda
Why does the silicone keep cracking?
The bath or tray is probably flexing. If it keeps happening, the support may need fixing.
What information do you need?
Use the quote form or ring 0345 017 0787, and we’ll take it from there.
Can new silicone go over old?
Never over old. The old sealant is cut out and the joint cleaned and dried.
Will the price change on the day?
The price is fixed for what the pictures show. Anything extra is discussed before we begin.
Are you a vetted contractor?
We’re accredited with CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile.
Do the materials smell?
There can be some smell while we work, so we ventilate the room. It fades as everything cures.
Is there a guarantee?
Yes: twelve months. If anything goes wrong with the repair within the year, we return to fix it.
How soon can you come?
It depends on the time of year and where you are. Send photos with your postcode and we’ll reply with the earliest dates.
Materials and what they mean for the repair
Shower trays
We put weight on a tray before sealing it, so the joint is at its widest.
Baths
We fill the bath before sealing, to open the joint fully.
Do you need bath resealing in Llanwnda?
Sealant splits when the bath or tray moves, frequently because it was sealed with the bath empty.
These are the problems we’re asked about most:
- Sealant that’s split or lifting
- Gaps by the taps
- Black mould in the sealant
- Water getting behind the bath or tray
What your quote should include
- How changes to the job are handled
- How your room will be protected
- What preparation is included
- Whether they match the colour on site
The process
On the day itself, there is little for you to do. Show us the job, point us to the room, and we will get on with it. Most visits take a couple of hours, tidy-up included.
- We cut out and remove all of the old sealant.
- The joint is cleaned and any mould treated.
- We make sure the joint is completely dry.
- Baths are filled with water first, so the joint is at its widest.
- We apply new mould-resistant silicone and tool it to a neat finish, including around the taps.
How to prepare
- Let us know which floor the room is on
- Tell us about any previous repairs or coatings
- Keep pets and children out of the room while we work
How to get a price
Getting a quote takes a couple of minutes: photograph the damage, then the whole bath or shower, include your postcode and send them to us. What comes back is a fixed price, not a guess.
Read more
When we would advise against a repair
A few problems are outside what a surface repair can do:
- Hollow or loose tiles
- Very wide gaps that need a trim
- A bath or tray that moves, until its support is fixed
Not sure? Send pictures and we will give you a straight answer.
What we work on
- Basins & vanity units
- Wet rooms
- Baths
- Shower trays & enclosures
- Kitchen worktops & sinks
Nearby places to Llanwnda
More services for Llanwnda
What affects the price in Llanwnda
You’ll know the full cost before booking. We look at:
- How easy the damage is to reach
- What the surface is made of
- The type of damage
- Previous DIY repairs that have to come out
It helps to know what pushes a price up or down: the amount of damage, the material, access to the area, and how many jobs we do in one trip. Photos let us give you a fixed figure.
Getting a price from photos
When you take your photos, a few simple things make all the difference:
- Your postcode, so we can check dates
- What it’s made of, if you know
- Natural light rather than flash
- Any earlier repairs or coatings
There’s no need for us to visit first. Photos are enough for us to price nearly every job: send a close-up, a wider shot and your postcode, and we’ll reply with a fixed price.
About Llanwnda
Llanwnda is about 11 miles south-west of Bangor, in Gwynedd. We travel to homes and businesses in Llanwnda, so you do not need to take anything anywhere. Llanwnda is one of 165 places in Gwynedd we cover. We work right across the region, from Llanwnda to Liverpool (about 60 miles away).
Every address in LL54 is covered. If you are just outside Llanwnda, we cover Groeslon (1 mile south), Rhostryfan (2 miles east), Rhosgadfan (2 miles east), Pen-y-ffridd (2 miles east) and Carmel (2 miles south-east). Further out, we also cover Bangor (11 miles north-east), Caernarfon (3 miles north), Bethesda (11 miles north-east), Hirael (12 miles north-east), Upper Bangor (11 miles north-east) and Glanadda (10 miles north-east).
Near you in Llanwnda
In Llanwnda, that means homes near St Gwyndaf's Church, among other places. Further afield, we also cover the area around Hen Gastell (within half a mile south) and Parc Glynllifon (1.9 miles south-west). For a walk, there’s Dinas Dinlle and Talysarn Lake.
- Other local spots include Seiont (2.5 miles north)
Should I try a DIY kit first?
If you do try a kit, read the instructions carefully, make sure the area is clean and completely dry, and give it the full curing time. If it doesn’t work out, we can still repair it properly.
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.
Aftercare tips
Once the work has cured, treat it gently:
- Replace the seal when mould sets in
- Keep bottles off the joints
- Run the extractor fan during and after showers
- Let steam out after showers
Keep the room well ventilated, and dry the joints after bathing so mould struggles to take hold.
Don’t wait until water gets behind the bath. Split or lifting sealant is a sign it’s time.
Why it’s worth resealing in Llanwnda
A reseal is one of the cheapest bathroom jobs there is and protects the walls and floor. Failed sealant can lead to water damage that is much more expensive. No two jobs are quite the same, so each one is priced on its own. What’s damaged, how badly and how easy it is to reach all play a part, and combining jobs on one visit brings the cost down.
Why Llanwnda customers choose us
- CHAS and Constructionline accredited
- Straight answers about what a repair can do
- Typically one visit, start to finish
- One-year guarantee on every repair
Read our prices page.
About our accreditations · Every repair comes with a one-year guarantee.

