Swansea · Wales
Bath & shower resealing (mastic) in Tre-gof, Swansea
Bath resealing across Tre-gof and nearby, done in a single visit in most cases.
- Stained silicone
- Gaps in the seal
- Unsealed corners

Bath resealing in Tre-gof without replacing anything
Resealing is one of the simplest ways to protect your bathroom. Old, split or mouldy sealant lets water get behind the bath or tray, and resealing puts a stop to that. Typical jobs include unsealed corners and black mould in the sealant, across basins & vanity units, kitchen worktops & sinks and shower trays & enclosures.
The work is guaranteed for twelve months. If there’s a problem with the repair within the year, we return and sort it.
- Where
- Tre-gof (SA7, SA6)
- County
- Swansea
- Guarantee
- One year on every repair
- Quote
- Free and fixed, from your photos
- Phone
- 0345 017 0787
- Page updated
- 23 October 2026

Why reseal now?
Sealing over old silicone is a false economy. It peels within weeks, and mould stays trapped behind it. A proper reseal removes the old first. Most people are surprised how affordable a repair is, especially compared with replacing and refitting. Send photos and we’ll give you the exact figure.
Why book with us
- A year’s guarantee on all work
- Work done at your home or business
- Everything repaired in place
- Rooms protected and left tidy
Read our prices page.
Common problems we fix in Tre-gof
No sealant lasts for ever. Each shower leaves moisture and soap behind, which mould feeds on, and the joint moves slightly every time the bath is filled.
The things customers usually mention when they call include:
- An untidy old seal
- Water getting behind the bath or tray
- Discoloured, yellow sealant
- Unsealed corners
What to look for in a quote
- How your room will be protected
- How to look after the finish
- Whether the price is fixed and includes VAT
- Whether the colour is mixed to match
How to care for the repair
A little care keeps the finish looking good. Our advice:
- Replace the seal when mould sets in
- Do not stand toiletries on the seal
- Clean the joints with a mild cleaner
- Let steam out after showers
Don’t scrape the sealant with anything sharp, and keep shampoo bottles off the joints.
Black mould in sealant is not just unsightly. Resealing early keeps water out of the walls and floor.
The process
You do not need to empty the room. We bring everything we need with us, lay protective sheets and get going once we have agreed what we’re doing. It usually takes around two hours, and you are welcome to carry on with your day while we work.
- All the old sealant is cut out and removed.
- The joint is cleaned and any mould treated.
- We ensure the joint is completely dry.
- For a bath, we fill it with water first so the joint is at its widest.
- We run a new bead of mould-resistant silicone and smooth it neatly, including around the taps.
Getting ready for the visit
- Tell us if there are stairs or a lift
- Clear toiletries, mats and anything else from around the area
- Let us know if it has been repaired before
Getting a price
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.
Advice
For landlords and businesses
For anyone letting property in or around Tre-gof, we can repair and quote for several addresses together. Send pictures for each one and we will come back with a combined price.
We regularly work with letting and managing agents. Send the address, pictures and access details and we will handle the rest.
Nearby places to Tre-gof
Also in Tre-gof
Should I try a DIY kit first?
If you’re set on a kit, follow its instructions closely, make sure the area is clean and completely dry, and don’t use it until it has fully cured. If it does not work out, we can still repair it properly.
It’s tempting to reach for a kit, but the repairs we redo most frequently are DIY ones that have discoloured or lifted. Doing it properly first is normally the cheaper route.
What bath resealing costs
Prices are worked out job by job, from your pictures. What matters most is:
- How many areas need work
- Access to the area
- Doing more than one item at once
- What the surface is made of
We charge the same wherever you are, with no extra for Tre-gof. What changes the price is the job itself: how much damage, what it’s made of and how many items.
Getting a price from pictures
The better the pictures, the more accurate the price. Here’s what helps:
- A picture taken from further back
- One sharp close-up of the damage
- Any earlier repairs or coatings
- Something in shot to show the size
If you’re in Tre-gof and want a price, pictures are the quickest way: one close up, one from further back, plus your postcode. We reply with a fixed quote and our next available 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
Baths are resealed with water in them, so the joint is at its widest.
About Tre-gof
Tre-gof is about 2 miles east of Morriston, in Swansea. Anywhere in SA7, we carry out the work at your property. Our repair technicians cover all 153 towns and villages across Swansea, from the larger towns to small villages.
Here we cover the SA7 and SA6 postcode area. You’ll find streets such as Tawe Road, Walters Road and Ynysallan Road, all of which we cover. Other places close to Tre-gof include Heol-las (1 mile east), Birchgrove (1 mile east), Llansamlet (1 mile south), Peniel Green (1 mile south-east) and Tai'rysgol (1 mile south). Larger places within reach include Swansea (4 miles south-west), Castle (4 miles south-west), Mount Pleasant (4 miles south-west), Gorseinon (6 miles west), Dyfaty (4 miles south-west) and Uplands (4 miles south-west).
Landmarks near Tre-gof
We visit homes around Birchgrove Comprehensive School, Birchgrove Inn and Ysgol Gymraeg Lon Las and the streets around them. The closest station to Tre-gof is Llansamlet station, roughly 0.6 miles south-east of the centre. Other landmarks nearby include Welsh Museum of Fire (1.8 miles east) and Clydach War Memorial Hospital (1.8 miles north). Green spaces nearby include Pluck Lake and Cwm Clydach RSPB Reserve.
Your questions about bath resealing in Tre-gof
What if the damage is worse than the pictures show?
We stop, show you and agree any change before carrying on. Nothing extra is done without your say-so.
Is a repair better than a new one?
Generally, if the item is otherwise sound. A repair avoids removal and making good. We’ll tell you honestly if replacement makes more sense.
Why does mould come back so fast?
Damp is the cause. Run the fan, dry the joints and the new seal stays cleaner for longer.
Does someone need to be in?
We need someone to let us in. After that, you can carry on with your day.
When can I use the bath after resealing?
We’ll give you the curing time.
How long does a reseal take?
Most reseals take about two hours. Leave it to cure before use.
Is there any odour?
Some materials have a smell while they’re applied, which is why we ventilate. It fades as everything cures.
What does bath resealing cost?
Because every job differs, we price from photos. You will get a fixed figure before booking.
About our accreditations · Every repair comes with a one-year guarantee.

