Gwynedd · Wales

Bath & shower resealing (mastic) in Dinas, Gwynedd

Bath resealing in Dinas without the cost of replacing. Send us photos for a fixed price, then book a visit.

  • Water getting behind the bath or tray
  • Silicone coming away from the tiles
  • Discoloured, yellow sealant
Surface Doctor technician refinishing the outside of a roll-top bath

Need bath resealing in Dinas?

Can I fix it myself?

It’s tempting to reach for a kit, but many of the jobs we do start with putting right a DIY repair. Getting it right first time is usually cheaper.

For a hairline mark somewhere you will 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.

Bath resealing at your home in Dinas

Baths, trays, basins and kitchen worktops all get resealed using mould-resistant silicone. A typical reseal takes a couple of hours, then it needs to cure. Whether it’s water getting behind the bath or tray and silicone smeared on tiles, we can generally put it right, whatever the material.

Your repair is guaranteed for a year, as with every job we do.

Roll-top bath being refinished by a Surface Doctor technician
Location
Dinas (LL54)
County
Gwynedd
Warranty
12 months on all our work
Quotes
Free and fixed, from your photos
Telephone
0345 017 0787
Last updated
23 October 2026

How the visit works

Arrival times are agreed in advance, so you know when to expect us. Once we’re there, the work takes a couple of hours for most jobs. The room is left tidy and ready to use once it has cured.

  1. We protect the area and mask the joint lines.
  2. Old sealant and residue are removed.
  3. We clean, treat and dry the joint.
  4. We run a continuous bead of new silicone.
  5. We smooth the bead, remove the tape and leave it to cure.

Preparing for the visit

  • Let the surface dry out before the visit
  • Tell us if there are stairs or a lift
  • Move bottles, mats and clutter away from the area

How to get a price

We price from pictures so you don’t 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, and you’ll get a fixed figure back.

Get a fixed quote

Related advice

Dinas: your questions answered

Does someone need to be in?

We need someone to let us in. You don’t need to watch us work.

How quickly can you book me in?

It depends on the time of year and where you are. We will offer you dates when we send your quote.

How do I book?

Use the quote form or ring 0345 017 0787, and we’ll do the rest.

Do you work in Dinas?

Yes. We work across the UK and come to Dinas and the rest of Gwynedd. Send photos and we’ll quote, or call 0345 017 0787.

Is there a call-out fee?

No. Our quotes include travel, and we charge the same wherever you are.

How long does silicone take to cure?

Normally about a day later. We will tell you the exact time.

Is it worth repairing rather than replacing?

Typically, if the item is otherwise sound. Repairing avoids the cost and disruption of replacing. We’ll tell you honestly if replacement makes more sense.

Can you do more than one item on the same visit?

Yes. Doing several items on one visit usually costs less than separate visits. Send photos of everything you’d like done.

What affects the price in Dinas

There’s no charge for travel to Dinas. The price depends on:

  • Doing more than one item at once
  • How easy the damage is to reach
  • Previous DIY repairs that have to come out
  • How many areas need work

No two jobs are quite the same, so we price each one individually. What’s damaged, how badly and how easy it is to reach all play a part, and doing several things on one visit costs less than separate visits.

Quotes from your photos

Almost every job we do is priced from pictures. This is what to send:

  • Any details about the material
  • Your postcode, so we can check dates
  • A close-up of the damage, in focus
  • Any earlier repairs or coatings

Upload a picture of the damage and a wider shot of the whole item, with your LL54 postcode, and we will reply with a fixed price.

What your bath or shower is made of matters

Baths

Baths are resealed with water in them, so the joint is at its widest.

Shower trays

Trays are sealed with weight on them, so the joint is at its widest.

Why reseal now?

Resealing is a small job. Putting off a reseal can let water reach the walls and floor, and that damage costs much more to fix. It helps to know what pushes a price up or down: access, material, the extent of the damage and whether we can do several items together. Send pictures and you will get a fixed figure.

Why Dinas clients choose us

  • Honest advice, even when it means no job
  • Accredited with CHAS, Constructionline and SafeContractor
  • A year’s guarantee on all work
  • Generally one visit, start to finish

Read our full price list.

When to call us in Dinas

A bathroom without good ventilation is hard on sealant: moisture sits on the joints longer, and mould takes hold.

Keep an eye out for these signs:

  • Damp near the bath
  • Unsealed corners
  • Sealant that’s split or lifting
  • Old sealant that looks dirty

Questions to ask before booking

  • The length of the guarantee and what it covers
  • Whether cleaning and preparation are in the price
  • How the colour is matched
  • How the room is protected while they work

Our hiring checklist

Looking after it afterwards

Once the work has cured, treat it gently:

  • Reseal when black spots won’t clean off
  • Store bottles on a shelf
  • Open a window after bathing
  • Keep the joints dry

Avoid scraping the joints, and keep shampoo bottles off the joints.

Black mould in sealant isn’t just unsightly, it’s a sign moisture is sitting in the joint. Resealing early keeps water out of the walls and floor.

About Dinas

Dinas is about 10 miles south-west of Bangor, in Gwynedd. Book a date that suits you, and we will give you an arrival time in advance, so there is no waiting around. We work in all 165 towns and villages across Gwynedd, from the larger towns to small villages. We work right across the region, from Dinas to Liverpool (60 miles away).

Here we cover the LL54 postcode area. Whether you live on Gwel y Foel and Lon Eifion or a nearby road, we can come to you. We also cover the places around Dinas: Glan-rhyd (1 mile west), Bontnewydd (1 mile north), Llanbeblig (2 miles north), Caeathro (2 miles north-east) and Caernarfon (3 miles north). We also work in nearby towns such as Bangor (10 miles north-east), Bethesda (11 miles north-east), Hirael (11 miles north-east), Upper Bangor (11 miles north-east), Glanadda (10 miles north-east) and Gerlan (11 miles north-east).

Near you in Dinas

Our clients here include homes close to Newborough Arms and St Gwyndaf's Church and the streets around them. Nearby you’ll also find Parc Glynllifon (2.4 miles south-west) and Seiont (2.1 miles north). For a walk, there’s Coed Helen and Talysarn Lake.

Map of Dinas © OpenStreetMap contributors

Landlord and trade work in Dinas

Hotels, guest houses and holiday lets need rooms back in use quickly, so we keep visits short and tidy. We will fit around changeovers where we can.

If you manage property in Dinas, we can repair and quote for several addresses together. Send pictures for each one and we’ll price them together.

CHAS accredited contractor and Constructionline logos SafeContractor, SMAS Worksafe and Builder’s Profile logos

About our accreditations · Every repair comes with a one-year guarantee.

Read what customers say about us on Trustpilot.