Na h-Eileanan Siar · Scotland
Bath & shower resealing (mastic) in Knock, Na h-Eileanan Siar
Bath resealing across Knock and nearby, done in a single visit in most cases.
- A messy previous reseal
- Black mould in the sealant
- Missing sealant behind the taps

When to call us in Knock
Most reseals are because of black mould. It grows into the silicone, so cleaning can’t get it all out.
Look out for any of the following:
- Unsealed corners
- Stained silicone
- Leaks at the edges
- Black mould in the sealant
What your quote should include
- How changes to the job are handled
- How the room is protected while they work
- How the colour is matched
- How soon you can use it again
Bath resealing in Knock, done in place
We reseal baths with them filled with water, so the joint is at its widest, so the seal does not tear when the bath is first used. Our repair technicians work on basins & vanity units, wet rooms and kitchen worktops & sinks, and common reasons people get in touch are black mould in the sealant and water getting behind the bath or tray.
You get a one-year guarantee, the same in Knock as everywhere else we work.

- Location
- Knock (HS2)
- Area hub
- Na h-Eileanan Siar
- Warranty
- One year on every repair
- Quotes
- Free, fixed quote from pictures
- Call
- 0345 017 0787
- Page updated
- 23 October 2026
Materials and what they mean for the repair
Shower trays
We put weight on a tray before sealing it, for the same reason.
Baths
We fill the bath before sealing, so the joint is at its widest.
Can I fix it myself?
DIY kits are sold for most surfaces, and they can tidy up a tiny mark. Where they fall down is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler frequently lifts.
It’s tempting to reach for a kit, but the repairs we redo most often are DIY ones that have discoloured or lifted. Doing it properly first is normally the cheaper route.
The process
It’s a tidy, low-fuss visit. We confirm the time with you beforehand, cover and mask the work area, then carry out the work, which normally takes a couple of hours. If we find something your pictures didn’t show, we will explain it before carrying on.
- The old silicone is cut out completely.
- We remove the residue and clean the joint.
- Any mould is treated and the joint dried.
- The bath is filled with water, or weight put on the tray.
- New mould-resistant silicone is applied and tooled neatly.
Before we arrive
- Plan for the room to be out of bounds to pets and children
- Have somewhere for us to park nearby if possible
- Mention if the room is upstairs or in a flat
How to get a price
To get a price, send a couple of photos using our quote form or ring us. We will tell you honestly whether it can be repaired.
Related advice
Knock and nearby
Knock (Gaelic: An Cnoc) is in Na h-Eileanan Siar. We visit customers in Knock and the surrounding area, so nothing has to leave your home. Knock is one of 87 towns and villages in Na h-Eileanan Siar where we work.
Postcode districts we cover here: HS2. Whether you live on Seaview and A' Chnuic or anywhere nearby, a technician can come to you. With the A866 close by, Knock is simple for us to get to. We also cover the places around Knock: Na h-Eileanan an Iar (1 mile west), Aiginis (1 mile west), Lower Bayble (1 mile east), Garrabost (2 miles north-east) and Pabail Uarach (2 miles east). Remote and island addresses take a little more planning, so it’s best to call first.
What’s near Knock
Locally, our jobs take us to homes close to Sgoil an Rubha and Lewis, among other places. Nearby you will also find Western Isles Hospital (4.5 miles west).
More services for Knock
Why reseal now?
A professional reseal costs little compared with water damage. It’s a quick job that protects your walls and floors. Instead of hourly rates, we price the whole job up front. Damage, material and access decide it, and combining items on one visit brings it down.
Why Knock clients choose us
- Rooms protected and left tidy
- One visit for most repairs
- A year’s guarantee on all work
- Technicians who travel to you, UK-wide
See our full price list.
Prices and what affects them
Prices are worked out job by job, from your photos. What matters most is:
- Whether old repairs or coatings need taking off
- The size and number of damaged areas
- How many items we do on one visit
- Unusual colours or finishes
The price reflects the work involved, not where you live. The full price is agreed before booking, with no extras added later.
How to get a fixed price
A couple of clear pictures is all it takes. Try to include:
- A clear, close picture of the problem area
- A coin or ruler next to the damage for scale
- Any earlier repairs or coatings
- Daylight if possible, and no flash reflection
Ring 0345 017 0787, or send us pictures through the quote form. With one close-up and one wider picture, we can give you a fixed quote.
For landlords and businesses
We also carry out snagging repairs for builders and developers, putting right damage done during fitting. We’re CHAS, Constructionline and SafeContractor accredited.
For anyone letting property in or around Knock, we can repair and quote for several addresses together. Just send photos for each address and we will come back with a combined price.
Knock questions
Do you work in Knock?
Yes. We cover the entire UK and travel to Knock. Send us photos for a fixed quote, or call 0345 017 0787.
Is a repair better than a new one?
Generally, yes. Replacement brings removal, refitting and making good, which a repair avoids. We will be honest if it’s not worth it.
Can you price it without visiting?
Nearly always. We only ask to see it in person if the pictures cannot show what we need.
How soon can you come?
It depends on the time of year and where you are. Send pictures with your postcode and we’ll reply with the earliest dates.
What happens if you find more damage?
We stop, show you and agree any change before carrying on. You won’t be charged for anything you haven’t agreed.
What areas do you cover?
The whole UK, including all of Na h-Eileanan Siar. Just include your postcode and we will confirm dates.
Do you hold any accreditations?
Yes, including CHAS, Constructionline and SafeContractor. The full list is on our accreditations page.
Can tenants book a repair?
Of course. Check with your landlord; we can send the quote to them too.
When a repair isn’t the answer
In fairness, some problems need a different fix:
- A flexing bath
- Gaps too big for silicone alone
- Tiles that move, until they’re refixed
Send us pictures and we’ll tell you honestly.
What we work on
- Shower trays & enclosures
- Basins & vanity units
- Wet rooms
- Kitchen worktops & sinks
- Baths
About our accreditations · Every repair comes with a one-year guarantee.

