Gwynedd · Wales
Bath & shower resealing (mastic) in Llanllechid, Gwynedd
Bath resealing in and around Llanllechid: photo quotes, tidy work and a year’s guarantee.
- Missing sealant behind the taps
- Leaks at the edges
- Stained silicone

Llanllechid and the surrounding area
Llanllechid is about 4 miles south-east of Bangor, in Gwynedd. Across the LL57 area, a technician comes to you. We work in 165 places in Gwynedd, from the larger towns to small villages. You can also see our page for Liverpool, about 49 miles away.
Postcode districts we cover here: LL57. That includes homes on Tan Fynnydd and Ffordd Llanllechid and the roads around them. Neighbouring places we cover include Rachub (1 mile south), Tan-y-foel (1 mile south-east), Hên-durnpike (1 mile south-west), Bethesda (1 mile south) and Tregarth (1 mile west). Larger places within reach include Bangor (4 miles north-west), Caernarfon (9 miles south-west), Hirael (3 miles north-west), Upper Bangor (4 miles north-west), Glanadda (4 miles north-west) and Coed-mawr (4 miles west).
Around Llanllechid
Our customers here include homes close to Bethesda County School, St Llechid's Church and The Royal Oak pub and the streets around them. The nearest railway station is Bangor (Gwynedd) station, about 3.5 miles north-west. Further afield, we also cover the area around Ty'n Twr (1.6 miles south) and Minffordd Hospital (3.1 miles north-west). The countryside around Llanllechid includes Moel Faban and Llyn Celanedd.
About our bath resealing in Llanllechid
Resealing is one of the simplest ways to protect your bathroom. Failed sealant lets water get where it shouldn’t, and a new seal stops it. Whether it’s sealant that’s split or lifting and discoloured, yellow sealant, we can typically put it right, whatever the material.
All of our repairs are guaranteed for twelve months. We return to put right any problem with the work.
- Area
- Llanllechid (LL57)
- Area hub
- Gwynedd
- Cover
- 12 months on all our work
- Price
- Free, fixed price from pictures
- Phone
- 0345 017 0787
- Updated
- 23 October 2026

How we price bath resealing
A fixed quote means you know the cost before booking. We take into account:
- Whether we combine several jobs
- Access to the area
- The size and number of damaged areas
- The material
A repair typically costs much less than people expect, especially compared with replacing and refitting. Send photos and we will give you the exact figure.
Quotes from your photos
It only takes a minute to photograph the damage, and it saves a visit. Try to send:
- A close-up of the damage, in focus
- Where you are, by postcode
- Something in shot to show the size
- Any details about the material
If you are in Llanllechid and want a price, the easiest route is pictures: a close-up, a wider shot and your postcode. We reply with a fixed quote and our next available dates.
Also near Llanllechid
What else we do in Llanllechid
How the visit works
On the day itself, there’s little for you to do. Let us in and show us the room, and we’ll take it from there. The job generally runs to a couple of hours.
- First we strip out every bit of the old mastic.
- We clean the joint and treat any mould.
- We dry the joint thoroughly.
- We fill a bath with water before sealing so the gap is at its widest.
- We apply new mould-resistant silicone and tool it to a neat finish, including around the taps.
Before we arrive
- Move bottles, mats and clutter away from the area
- Mention if the room is upstairs or in a flat
- Point us to the nearest place to park
How to get a price
A quote takes minutes to ask for: take one close-up and one wider shot of the bath or shower, include your postcode and send them to us. You will get a fixed quote, not an estimate.
Advice
Repairs by material
Baths
Baths are resealed with water in them, so the joint is at its widest.
Sinks and worktops
Basins, vanity units and kitchen worktops are resealed too, with the joint fully dried first.
Honest limits
To be straight with you, there are a few things a repair won’t fix:
- Hidden water damage
- Gaps so wide they need filling or trims before sealing
- Tiles that move, until they’re refixed
If in doubt, send photos and we will say what we think.
Materials we work on in Llanllechid
- Shower trays & enclosures
- Kitchen worktops & sinks
- Wet rooms
- Basins & vanity units
- Baths
Why reseal now?
Sealing over old silicone is a false economy. It peels within weeks, and mould stays trapped behind it. We remove the old sealant completely. A repair is priced on what needs doing, not your postcode. You will see the full price before you book, with no extras added later.
Why choose Surface Doctor in Llanllechid
- Nothing taken out or refitted
- One price list for the whole UK
- Usually one visit, start to finish
- One-year guarantee on every repair
Take a look at our pricing.
Llanllechid: your questions answered
What areas do you cover?
We work UK-wide. Prices don’t change with location.
How long will it take?
Usually a couple of hours, plus curing time.
Why does the silicone keep cracking?
Usually because the bath or tray moves, or it was sealed with the bath empty. We seal baths full of water.
What happens next?
We check the damage, the material and your postcode, then reply with a quote.
Can new silicone go over old?
We always remove the old sealant completely. New silicone will not bond to old.
Do the materials smell?
A little, depending on the job. Open windows and an extractor fan help, and it soon fades.
Do you work for landlords and businesses?
Yes, often. We quote for multiple addresses and fit around tenancy changeovers.
Do I have to be there?
Yes. The technician needs access to the room for the visit, at a time we agree with you.
Can I fix it myself?
The difference between a kit and a professional repair is mostly in the preparation and colour. We prepare the area properly, mix the colour on site and polish the finish to match, then guarantee it for a year.
We understand the appeal of fixing it yourself. The risk is that a kit repair hides the damage for a while, then fails, and then the old filler has to be removed first.
Landlords, agents and businesses in Llanllechid
Housing associations and facilities teams use us for planned and reactive repairs in Gwynedd and across the UK. A repair avoids taking out and refitting, which is easier on the people living there.
Letting agents frequently send us photos straight from the inventory. You can have a price before you arrange access, and we can arrange access with the tenant directly if that helps.
Looking after it afterwards
Looking after the surface is easy:
- Reseal at the first sign of lifting
- Let steam out after showers
- Use the extractor fan
- Keep bottles off the joints
Avoid scraping the joints, and keep shampoo bottles off the joints.
Don’t wait until water gets behind the bath. Gaps or lifting edges mean it needs doing.
About our accreditations · Every repair comes with a one-year guarantee.

