Gwynedd · Wales
Bath & shower resealing (mastic) in Waunfawr, Gwynedd
Bath resealing across Waunfawr and nearby, typically in one visit and guaranteed for a year.
- Missing sealant behind the taps
- Black spots in the silicone
- A messy previous reseal

Bath resealing in Waunfawr without replacing anything
Baths are resealed with water in them, so the joint is at its widest, so the seal doesn’t tear when the bath is first used. We’re frequently asked to fix sealant that’s split or lifting and black mould in the sealant, on baths, kitchen worktops & sinks and wet rooms.
You get a one-year guarantee, the same in Waunfawr as everywhere else we work.

- Location
- Waunfawr (LL55)
- County
- Gwynedd
- Cover
- A year, on every repair
- Quotes
- Free, fixed price from pictures
- Telephone
- 0345 017 0787
- Last updated
- 23 October 2026
About Waunfawr
Waunfawr is about 8 miles south of Bangor, in Gwynedd. Our work suits any type of property, old or new, large or small, plus businesses and rented homes. Waunfawr is one of 165 towns and villages in Gwynedd where we work. We work right across the region, from Waunfawr to Liverpool (57 miles away).
We work across LL55. That includes homes on Bro Waun, Stad Ty Hen and Pant y Waun and the roads around them. Neighbouring places we cover include Caeathro (2 miles north-west), Llanbeblig (2 miles north-west), Bontnewydd (2 miles west), Dinas (3 miles west) and Caernarfon (3 miles north-west). Within a short drive, we also cover Bangor (8 miles north), Bethesda (8 miles north-east), Hirael (9 miles north-east), Upper Bangor (9 miles north), Glanadda (8 miles north) and Gerlan (8 miles north-east).
Local landmarks in Waunfawr
We visit homes around Snowdonia Parc pub and Church Of St John The Evangelist. Other landmarks nearby include Amgueddfa'r Gogledd (Museum of the North) (3.6 miles east) and Bryn Bras Castle (2.2 miles north-east). The countryside around Waunfawr includes Llyn Ffynhonnau and Moel Smytho.
What your bath or shower is made of matters
Baths
We fill the bath before sealing, so the joint is at its widest.
Shower trays
We put weight on a tray before sealing it, for the same reason.
DIY repairs versus a professional job
For a hairline mark somewhere you’ll never see, a kit may be enough. For anything you look at every day, anything that has rusted, cracked or holed, or anything on a coloured surface, it’s worth having it done properly.
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.
Towns and villages near Waunfawr
Also in Waunfawr
What a repair can’t fix
A few problems are outside what a surface repair can do:
- A bath or tray that moves, until its support is fixed
- Tiles that move, until they’re refixed
- Very wide gaps that need a trim
If in doubt, send pictures and we’ll say what we think.
What we work on
- Basins & vanity units
- Shower trays & enclosures
- Wet rooms
- Baths
- Kitchen worktops & sinks
How we price bath resealing
Each job gets its own fixed price. These are the things that affect it:
- Doing more than one item at once
- The colour and finish to match
- Any earlier repairs that need removing first
- The material and finish
There are no surprise extras on the day. The price we quote from your pictures is the price you pay, and if the damage turns out to be different, we discuss it before starting.
How to get a fixed price
Phone pictures are fine, there is no need for anything special. Just make sure we can see:
- Any earlier repairs or coatings
- A close-up of the damage, in focus
- A picture taken from further back
- Where you are, by postcode
For most jobs, photos are all we need to give you a price. Add a line about what happened and your postcode, and we’ll send back a fixed quote and some dates.
Common problems we fix in Waunfawr
Sealant does not last forever. Each shower leaves moisture and soap behind, which mould loves, and the joint flexes each time the bath fills.
Contact us if you’ve noticed:
- Discoloured, yellow sealant
- Sealant that is split or lifting
- Black mould in the sealant
- Silicone smeared on tiles
Questions to ask before booking
- What the guarantee covers, and for how long
- How to look after the finish
- A fixed price, and whether VAT is included
- What prep work is covered
FAQs for Waunfawr
I rent my home. Can I book you?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Can you price it without visiting?
Typically, yes. A close-up and a wider photo are enough to give a fixed price.
Will it make a mess?
Very little mess: we sheet and mask everything nearby, and we take our waste away with us.
What if the damage is worse than the pictures show?
It’s rare, but if it happens we talk to you first. The price only changes if you agree.
What happens once I’ve sent photos?
We check the damage, the material and your postcode, then reply with a quote and the next dates we have.
Do the materials smell?
A little, depending on the job. Open windows and an extractor fan help, and it soon fades.
Is the work guaranteed?
All our work carries our one-year guarantee. We will explain what it covers when we quote.
How long does a reseal take?
Most reseals take about two hours. It then needs time to cure.
Resealing in Waunfawr: why it matters
Compared with repairing water damage, resealing is cheap. It’s quick, tidy and protects your home. A few things move the price: access, material, the extent of the damage and whether we can do several items together. Send photos and you will get a fixed figure.
Why choose Surface Doctor in Waunfawr
- No need to remove anything
- Most jobs done in one visit
- Straight answers about what a repair can do
- We come to you, anywhere in the UK
Take a look at our pricing.
The process
We begin by going over the job with you. Next, we cover and mask everything nearby and we start. You can expect it to take a couple of hours, and we’ll tell you if anything changes.
- 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
- Tell us about any previous repairs or coatings
- Keep a parking space free if you can
- Clear the area around the damage
Ask for a price
No survey visit is needed: we price from pictures. Use the quote form, or ring 0345 017 0787 to talk it through, and we’ll come back with a fixed figure.
Related advice
Keeping it looking good
Much of the damage we repair could have been avoided. These habits help:
- Dry the seal after bathing
- Let steam out after showers
- Run the extractor fan during and after showers
- Store bottles on a shelf
Use the extractor fan, wipe the joints dry after use, and give them a regular clean with a mild cleaner to slow mould growth.
Damp below or loose tiles need checking quickly. It may be more than a reseal, so we will tell you if it needs a builder or plumber.
About our accreditations · Every repair comes with a one-year guarantee.

