Gwynedd · Wales
Bath & shower resealing (mastic) in Frongoch, Gwynedd
Bath, shower and sink resealing with new mould-resistant silicone for homes and businesses in Frongoch and across Gwynedd. Send pictures for a free, fixed quote.
- Leaks at the edges
- An untidy old seal
- Black mould in the sealant

Materials and what they mean for the repair
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, once the joint is completely dry.
About our bath resealing in Frongoch
We cut out all of the old sealant, deal with any mould, and apply fresh mould-resistant silicone. We reseal baths, showers, sinks and worktops, and that includes the awkward spots behind the taps. Common call-outs are for silicone smeared on tiles and mould you can’t clean out, across kitchen worktops & sinks, baths and basins & vanity units.
Whatever the size of the job, it’s backed by a one-year guarantee in Frongoch and across Gwynedd.

- Location
- Frongoch (LL23)
- Region
- Gwynedd
- Guarantee
- 12 months on all our work
- Quotes
- Fixed and free, based on pictures
- Telephone
- 0345 017 0787
- Updated
- 23 October 2026
Why reseal now?
Resealing costs very little and protects the walls and floor. Leaving failed sealant can let water cause damage that costs far more to fix. 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.
What you get with us
- Most jobs done in one visit
- A fixed quote before booking
- A year’s guarantee on all work
- Same prices wherever you are
Take a look at our full price list.
Towns and villages near Frongoch
What else we do in Frongoch
Frongoch: your questions answered
Is it messy?
No. The work area is masked and covered, and we take our waste away with us.
Is the work guaranteed?
Every repair comes with a one-year guarantee. Ask us what it covers when you get your quote.
Do you do work for letting agents?
Yes, frequently. We quote for multiple addresses and fit around tenancy changeovers.
How long does resealing take?
Around two hours for a bath, plus curing time.
Do you hold any accreditations?
Yes, including CHAS, Constructionline and SafeContractor. See our accreditations page for the full list.
What happens after I send photos?
We look at the photos and reply with a fixed quote and some dates. If we need another angle, we will ask.
Which areas do you work in?
Across the UK. Our prices are the same everywhere.
Do you come to Frongoch?
Yes, we do. Technicians travel to Frongoch from across the region, with no extra charge for travel.
What we’re called out for in Frongoch
Sealant splits when the bath or tray moves, often because it was sealed while the bath was empty.
Common reasons people in Frongoch contact us include:
- Gaps by the taps
- Gaps in the seal
- Black spots in the silicone
- An untidy old seal
Questions to ask before booking
- What aftercare is recommended
- Whether there are any call-out or travel charges
- Whether the colour is mixed to match
- Whether a trained technician does the job
Keeping it looking good
Simple care helps the repair last. We recommend:
- Wipe the joints dry after use
- Clean the sealant gently and regularly
- Let steam out after showers
- Keep bottles off the joints
Do not scrape the sealant with anything sharp, and keep shampoo bottles off the joints.
Mouldy sealant is more than a cosmetic problem. An early reseal keeps water where it belongs.
About Frongoch
Frongoch is about 25 miles south of Bae Colwyn, in Gwynedd. We visit customers in Frongoch and the surrounding area, so there is no workshop to go to. Frongoch is one of 165 towns and villages in Gwynedd where we work. Our nearest city page is Liverpool, about 44 miles away.
All of LL23 is within our area. Close by, we cover Y Bala (3 miles south-east), Llanycil (3 miles south), Llangower (4 miles south), Llandderfel (5 miles east) and Llanuwchllyn (6 miles south). Larger places within reach include Blaenau Ffestiniog (13 miles west), Ffestiniog (13 miles west), Glan-y-pwll (14 miles west) and Bethania (13 miles west).
What’s near Frongoch
We visit homes around Ysgol Bro Tryweryn, among other places. Other landmarks nearby include Mary Jones World (2.8 miles south) and Pen-uchar llan (2.7 miles south-east). Open spaces near Frongoch include Craig y Garn and Llyn y Fawnog.
When we would advise against a repair
Honesty matters more than a booking, so here’s what a repair will not do:
- Gaps so wide they need filling or trims before sealing
- Water damage behind the bath that needs a builder
- Loose tiles, which need refixing first
If in doubt, send pictures and we will say what we think before booking.
What we work on
- Baths
- Shower trays & enclosures
- Kitchen worktops & sinks
- Wet rooms
- Basins & vanity units
Work for landlords and builders
Hotels, guest houses and holiday lets need rooms back in use quickly, so we keep visits short and tidy. We’ll fit around changeovers where we can.
We also carry out snagging repairs for builders and developers, putting right damage done during fitting so nothing needs replacing. We are CHAS, Constructionline and SafeContractor accredited.
Should I try a DIY kit first?
If you do try a kit, read the instructions carefully and work on a clean, dry surface, and don’t use it until it has fully cured. If it does not work out, we can still repair it properly.
What a professional repair adds is preparation, colour matching and finishing. 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.
How it works
On the day, we arrive at the time we’ve agreed, cover the area with dust sheets and masking, and set to work. Expect it to take around two hours. We clean up when we are done and let you know when you can use it again.
- All the old sealant is cut out and removed.
- The joint is cleaned and any mould treated.
- The joint is dried thoroughly.
- We fill a bath with water before sealing so the gap is at its widest.
- We run a new bead of mould-resistant silicone and smooth it neatly, taps included.
How to prepare
- Clear toiletries, mats and anything else from around the area
- Tell us if there are stairs or a lift
- Let the surface dry out before the visit
Get a quote
We price from pictures so you do not have to wait in for a survey. Send them through the quote form, or call 0345 017 0787 if you’d rather talk it through.
Read more
About our accreditations · Every repair comes with a one-year guarantee.

