Gwynedd · Wales
Bath & shower resealing (mastic) in Penrhosgarnedd, Gwynedd
Bath resealing in Penrhosgarnedd without the cost of replacing. Send us photos for a fixed price, then we come to you.
- Damp near the bath
- Stained silicone
- Silicone smeared on tiles

When to call us in Penrhosgarnedd
Joints split if the bath or tray moves, frequently because it was sealed while the bath was empty.
Keep an eye out for these signs:
- Damp near the bath
- Silicone coming away from the tiles
- Mould you cannot clean out
- Gaps by the taps
Before you book anyone
- Who will actually do the work
- Whether the price is fixed and includes VAT
- Whether there are any call-out or travel charges
- What the guarantee covers, and for how long
Bath resealing in Penrhosgarnedd without replacing anything
A proper reseal starts with removing every trace of the old silicone. Fresh sealant doesn’t stick to old, which is why many DIY jobs peel. Our repair technicians work on wet rooms, shower trays & enclosures and baths, and people most frequently call us about leaks at the edges and a messy previous reseal.
The work is guaranteed for twelve months. If something is not right in that time, we come back and put it right.
- Where
- Penrhosgarnedd (LL57)
- Area hub
- Gwynedd
- Guarantee
- One year on every repair
- Price
- Fixed and free, based on pictures
- Call
- 0345 017 0787
- Last updated
- 23 October 2026

Nearby places to Penrhosgarnedd
More services for Penrhosgarnedd
Common questions in Penrhosgarnedd
Does someone need to be in?
Yes. The technician needs access to the room for the visit, at a time we agree with you.
Can you redo someone else’s repair?
In most cases. We remove the old repair before doing a new one, so let us know about it.
Will you leave a mess?
We protect the room with dust sheets and masking first, and we clean up when we’ve finished.
Is a repair better than a new one?
Typically, if the item is otherwise sound. A repair avoids removal and making good. If replacing would be better, we’ll say so.
How soon can you come?
That depends on our diary for your area. Send pictures with your postcode and we’ll reply with the earliest dates.
Can you reseal over the old silicone?
We always remove the old sealant completely. Fresh silicone doesn’t stick to old.
Will the price change on the day?
The price is fixed for what the photos show. Anything extra is discussed before we begin.
Do you come to Penrhosgarnedd?
We do. Technicians travel to Penrhosgarnedd from across the region, and the price is the same as everywhere else.
What happens on the day
Here’s how a visit typically runs: we arrive at the agreed slot, sheet and mask the area around the job, do the job and tidy away. Allow a couple of hours. Before we go, we’ll explain when it can be used and what to avoid for the first few days.
- The surrounding area is protected and the joints masked.
- We remove the old sealant and every trace of residue.
- We clean, treat and dry the joint.
- We run a continuous bead of new silicone.
- We smooth the bead, remove the tape and leave it to cure.
Before we arrive
- Let the surface dry out before the visit
- Make sure the room can be ventilated
- Tell us about any previous repairs or coatings
How to get a price
Pricing is simple: snap the damage close up and then the entire item, send them over with your postcode, and we will reply with a fixed price. There’s no charge for the quote and no obligation.
Advice
Why reseal now?
Resealing is routine maintenance. Leaving split or mouldy sealant lets water get behind the bath or tray, which costs far more to put right. Set against the cost of replacement, a repair is typically a fraction of the price, because nothing has to be taken out, refitted or made good. The quote lists exactly what you are paying for.
Why choose Surface Doctor in Penrhosgarnedd
- We come to you, anywhere in the UK
- A fixed quote before booking
- Same prices wherever you are
- One visit for most repairs
Take a look at our full price list.
For landlords and businesses
Rental properties take more wear, and replacing items every time a tenant leaves is expensive. A repair between tenancies is a cheaper way to keep the property in good order.
For anyone letting property in or around Penrhosgarnedd, we can repair and quote for several addresses together. Just send photos for each address and we’ll price them together.
Keeping it looking good
After the repair has cured, a few habits help it last:
- Dry the seal after bathing
- Use the extractor fan
- Air the room after use
- Store bottles on a shelf
Run the extractor fan, wipe the joints dry after use, and give them a regular clean with a mild cleaner to slow mould growth.
If you notice damp, stains on the ceiling below or loose tiles, act quickly. There may be more going on, so we’ll tell you if it needs a builder or plumber.
Materials and what they mean for the repair
Baths
Baths are resealed with water in them, to open the joint fully.
Shower trays
Trays are sealed with weight on them, for the same reason.
Can I fix it myself?
Kits are cheap and easy to find, but many of the jobs we do start with putting right a DIY repair. Getting it right first time is normally cheaper.
If you do try a kit, read the instructions carefully and work on a clean, dry surface, and do not use it until it has fully cured. If it doesn’t work out, we can still repair it properly.
What we cannot put right
Some problems need a builder, plumber or fitter rather than us:
- Gaps too big for silicone alone
- Water damage behind the bath that needs a builder
- Loose tiles, which need refixing first
If in doubt, send photos and we’ll say what we think.
Materials we repair
- Baths
- Kitchen worktops & sinks
- Shower trays & enclosures
- Basins & vanity units
- Wet rooms
Penrhosgarnedd and nearby
Penrhosgarnedd is about 2 miles south-west of Bangor, in Gwynedd. Book a date that suits you, and you will know when to expect us, so you are not left waiting in all day. Our repair technicians cover 165 places in Gwynedd, from the larger towns to small villages. Our nearest city page is Liverpool, about 53 miles away.
All of LL57 is covered. From Menai Road, Penrhos Road and Treborth Road or a nearby road, a technician can come to you. Penrhosgarnedd is on the A55 and A487, which makes it straightforward to reach. If you are just outside Penrhosgarnedd, we cover Treborth (1 mile north-west), Capel-y-graig (1 mile south-west), Coed-mawr (1 mile north-east), Bryn-llwyd (1 mile north-east) and Glanadda (1 mile north-east). Larger places within reach include Caernarfon (6 miles south-west), Bethesda (5 miles south-east), Gerlan (5 miles south-east), Braichmelyn (5 miles south-east), Llanbeblig (6 miles south-west) and Llanberis (6 miles south).
Landmarks near Penrhosgarnedd
Typical jobs here are in homes near Ysgol Friars, Parc Britannia pub and St Tysilio's Church. Nearby too are Vaynol Park (1.7 miles south-west), Ysgol Glanaethwy (0.8 miles west) and Alice Williams Memorial Library (1.9 miles north-east). The nearest railway station is Bangor (Gwynedd) station, about 1.5 miles north-east. Further afield, we also cover the area around Deiniol (1.9 miles north-east) and Ysbyty Gwynedd (under half a mile east). Open spaces near Penrhosgarnedd include Spinnies Nature Reserve and Penrhos Garnedd.
About our accreditations · Every repair comes with a one-year guarantee.

